"service manual"

"service manual"
Table of Contents
INTRODUCTION
WHAT IS OBD? ....................................................................................
YOU CAN DO IT! ...........................................................................................
SAFETY PRECAUTIONS
SAFETY FIRST! ...................................................................................
ABOUT THE SCAN TOOL
VEHICLES COVERED .........................................................................
BATTERY REPLACEMENT .................................................................
SCAN TOOL CONTROLS
CONTROLS AND INDICATORS ..........................................................
DISPLAY FUNCTIONS ........................................................................
ONBOARD DIAGNOSTICS
COMPUTER ENGINE CONTROLS .....................................................
DIAGNOSTIC TROUBLE CODES (DTCs) ............................................
OBD2 MONITORS ...............................................................................
PREPARATION FOR TESTING
PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET.......................
BEFORE YOU BEGIN ..........................................................................
VEHICLE SERVICE MANUALS ...........................................................
USING THE SCAN TOOL
CODE RETRIEVAL PROCEDURE ......................................................
THE SYSTEM MENU ............................................................................
VIEWING OEM ENHANCED DTCs .....................................................
VIEWING ABS DTCs ...........................................................................
VIEWING SRS DTCs ...........................................................................
ERASING DIAGNOSTIC TROUBLE CODES (DTCs) ..........................
I/M READINESS TESTING ..................................................................
ABOUT REPAIRSOLUTIONS® ...........................................................
LIVE DATA MODE
VIEWING LIVE DATA ...........................................................................
CUSTOMIZING LIVE DATA (PIDs) ......................................................
RECORDING (CAPTURING) LIVE DATA ............................................
LIVE DATA PLAYBACK .......................................................................
ADDITIONAL TESTS
SPECIAL TEST MENU .........................................................................
VIEWING VEHICLE INFORMATION ....................................................
SEARCH FOR A DTC DEFINTION USING THE DTC LIBRARY (OBD1)
..............................................................................................................
SEARCH FOR A DTC DEFINITION USING THE DTC LIBRARY (OBD2)
..............................................................................................................
VIEWING THE FIRMWARE VERSION ................................................
ADJUSTMENTS AND SETTINGS .......................................................
USING SCAN TOOL MEMORY
VIEWING DATA IN MEMORY ..............................................................
GENERIC (GLOBAL) OBD2 PID LIST ..........................................................
VEHICLE APPLICATIONS - ABS
VEHICLE APPLICATIONS – MAKES COVERED ................................
VEHICLE APPLICATIONS - SRS
VEHICLE APPLICATIONS – MAKES COVERED ................................
GLOSSARY
GLOSSARY OF TERMS AND ABBREVIATIONS ................................
WARRANTY AND SERVICING
LIMITED ONE YEAR WARRANTY ......................................................
SERVICE PROCEDURES ...................................................................
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3160d
Introduction
WHAT IS OBD?
WHAT IS OBD?
The Scan Tool is designed to work on all OBD2 compliant vehicles.
All 1996 and newer vehicles (cars, light trucks and SUVs) sold in
the United States are OBD2 compliant.
One of the most exciting improvements in the
automobile industry was the addition of onboard diagnostics (OBD) on vehicles, or in more
basic terms, the computer that activates the
vehicle’s “CHECK ENGINE” light. OBD1 was
designed to monitor manufacturer-specific
systems on vehicles built from 1981 to 1995.
Then came the development of OBD2, which is
on all 1996 cars and light trucks sold in the U.S. Like its predecessor,
OBD2 was adopted as part of a government mandate to lower vehicle
emissions. But what makes OBD2 unique is its universal application for
all late model cars and trucks - domestic and import. This sophisticated
program in the vehicle’s main computer system is designed to detect
failures in a range of systems, and can be accessed through a universal
OBD2 port, which is usually found under the dashboard. For all OBD
systems, if a problem is found, the computer turns on the “CHECK
ENGINE” light to warn the driver, and sets a Diagnostic Trouble Code
(DTC) to identify where the problem occurred. A special tool, such as
the Scan Tool, is required to retrieve these codes, which consumers and
professionals use as a starting point for repairs.
The Scan Tool provides the additional ability to retrieve enhanced DTCs
from most Chrysler/Jeep, Ford/Mazda, GM/Izusu, Honda/Acura and
Toyota/Lexus vehicles, as well as ABS and SRS DTCs, and vehicle
information. The types of enhanced data available depends on the
vehicle make.
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1
You Can Do It!
EASY TO USE - EASY TO VIEW - EASY TO DEFINE
Easy To Use . . . .
„
Connect the Scan Tool to the vehicle’s
test connector.
„
Turn the ignition key "On.”
„
The tool will automatically link to the
vehicle’s computer.
Easy To View . . . .
„
The Scan Tool retrieves stored codes,
Freeze Frame data and I/M Readiness
Status.
„
Codes, I/M Readiness Status and
Freeze Frame data are displayed on the
Tool’s display screen. System Status is
indicated by LED indicators.
Easy To Define . . . .
2
„
Read code definitions from the Scan
Tool’s display.
„
View Freeze Frame data.
„
View Live Data.
„
View Anti-Lock Brake System (ABS)
codes.
„
• View Supplemental Restraint System
(SRS) codes.
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Safety Precautions
SAFETY FIRST!
SAFETY FIRST!
To avoid personal injury, instrument damage and/or
damage to your vehicle; do not use the Scan Tool
before reading this manual.
This manual describes common test procedures used
by experienced service technicians. Many test procedures
require precautions to avoid accidents that can result in
personal injury, and/or damage to your vehicle or test
equipment. Always read your vehicle's service manual and
follow its safety precautions before and during any test or
service procedure. ALWAYS observe the following general
safety precautions:
When an engine is running, it produces carbon monoxide,
a toxic and poisonous gas. To prevent serious injury or
death from carbon monoxide poisoning, operate the
vehicle ONLY in a well-ventilated area.
To protect your eyes from propelled objects as well as hot
or caustic liquids, always wear approved safety eye
protection.
When an engine is running, many parts (such as the
coolant fan, pulleys, fan belt etc.) turn at high speed. To
avoid serious injury, always be aware of moving parts.
Keep a safe distance from these parts as well as other
potentially moving objects.
Engine parts become very hot when the engine is running.
To prevent severe burns, avoid contact with hot engine
parts.
P RND L
Before starting an engine for testing or troubleshooting,
make sure the parking brake is engaged. Put the
transmission in park (for automatic transmission) or
neutral (for manual transmission). Block the drive wheels
with suitable blocks.
Connecting or disconnecting test equipment when the
ignition is ON can damage test equipment and the
vehicle's electronic components. Turn the ignition OFF
before connecting the Tool to or disconnecting the Tool
from the vehicle’s Data Link Connector (DLC).
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3
Safety Precautions
SAFETY FIRST!
To prevent damage to the on-board computer when taking
vehicle electrical measurements, always use a digital
multimeter with at least 10 megOhms of impedance.
Fuel and battery vapors are highly flammable. To prevent
an explosion, keep all sparks, heated items and open
flames away from the battery and fuel / fuel vapors. DO
NOT SMOKE NEAR THE VEHICLE DURING TESTING.
Don't wear loose clothing or jewelry when working on an
engine. Loose clothing can become caught in the fan,
pulleys, belts, etc. Jewelry is highly conductive, and can
cause a severe burn if it makes contact between a power
source and ground.
4
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About the Scan Tool
VEHICLES COVERED
VEHICLES COVERED
The Scan Tool is designed to work on all OBD2 compliant vehicles. All
1996 and newer vehicles (cars and light trucks) sold in the United States
are OBD2 compliant.
Federal law requires that all 1996 and newer cars and light
trucks sold in the United States must be OBD2 compliant; this
includes all Domestic, Asian and European vehicles.
Some 1994 and 1995 vehicles are OBD2 compliant. To find out if a
1994 or 1995 vehicle is OBD2 compliant, check the following:
1. The Vehicle Emissions Control Information (VECI) Label. This
label is located under the hood or by the radiator of most vehicles. If
the vehicle is OBD2 compliant, the label will state “OBD II
Certified.”
VEHICLE EMISSION CONTROL INFORMATION
ENGINE FAMILY
DISPLACEMENT
VEHICLE
MANUFACTURER
EFN2.6YBT2BA
2.6L
OBD II
CERTIFIED
THIS VEHICLE CONFORMS TO U.S. EPA AND STATE
OF CALIFORNIA REGULATIONS APPLICABLE TO
1999 MODEL YEAR NEW TLEV PASSENGER CARS.
REFER TO SERVICE MANUAL FOR ADDITIONAL INFORMATION
TUNE-UP CONDITIONS: NORMAL OPERATING ENGINE TEMPERATURE,
ACCESSORIES OFF, COOLING FAN OFF, TRANSMISSION IN NEUTRAL
EXHAUST EMISSIONS STANDARDS
CERTIFICATION
IN-USE
SPARK PLUG
TYPE NGK BPRE-11
GAP: 1.1MM
OBD II
CERTIFIED
STANDARD CATEGORY
TLEV
TLEV INTERMEDIATE
CATALYST
2. Government Regulations require that all
OBD2 compliant vehicles must have a
“common”
sixteen-pin
Data
Link
Connector (DLC).
1 2 3 4 5 6 7 8
9 10111213141516
Some 1994 and 1995 vehicles have 16-pin connectors but are
not OBD2 compliant. Only those vehicles with a Vehicle
Emissions Control Label stating “OBD II Certified” are OBD2
compliant.
Data Link Connector (DLC) Location
The 16-pin DLC is usually
located under the instrument
panel (dash), within 12 inches
(300 mm) of center of the panel,
on the driver’s side of most
vehicles. It should be easily
accessible and visible from a
kneeling position outside the
vehicle with the door open.
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LEFT CORNER
OF DASH
NEAR
CENTER
OF DASH
BEHIND
ASHTRAY
5
About the Scan Tool
BATTERY REPLACEMENT
On some Asian and European vehicles the DLC is located
behind the “ashtray” (the ashtray must be removed to
access it) or on the far left corner of the dash. If the DLC
cannot be located, consult the vehicle’s service manual for
the location.
BATTERY REPLACEMENT
Replace batteries when the battery symbol
is visible on display
and/or the 3 LEDS are all lit and no other data is visible on screen.
1. Locate the battery cover on the back of the Scan Tool.
2. Slide the battery cover off (use your fingers).
3. Replace batteries with three AA-size batteries (for longer life, use
Alkaline-type batteries).
4. Reinstall the battery cover on the back of the Scan Tool.
Adjustments After Battery Installation
The first time the Scan Tool is turned on, you must select the desired
display language (English, French or Spanish) and unit of measurement
(USA or metric) as follows:
1. Press the POWER/LINK
to turn the Tool “ON.”
„
The Select
displays.
Language
button
screen
2. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
display language.
3. When the desired display language is
button to
selected, press the ENTER
confirm your selection.
„
The Select Unit screen displays.
and DOWN
buttons,
4. Use the UP
as necessary, to highlight the desired
unit of measurement.
5. When the desired unit of measurement is selected, press the
button to confirm your selection.
ENTER
After the initial language and unit of measurement selections
are performed, these, as well as other settings, can be
changed as desired. Proceed to ADJUSTMENTS AND
SETTINGS on page 79 for further instructions.
6
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Scan Tool Controls
CONTROLS AND INDICATORS
CONTROLS AND INDICATORS
14
13
10
7
11
12
1
2
3
4
5
6
8
9
Figure 1. Controls and Indicators
See Figure 1 for the locations of items 1 through 14, below.
1.
ERASE button - Erases Diagnostic Trouble Codes (DTCs),
and “Freeze Frame” data from your vehicle’s computer, and resets
Monitor status.
2.
SYSTEM MENU button – When pressed, displays the System
Menu.
3. DTC/FF button - Displays the DTC View screen and/or scrolls the
LCD display to view DTCs and Freeze Frame data.
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7
Scan Tool Controls
CONTROLS AND INDICATORS
4.
POWER/LINK button - When the Scan Tool IS NOT
connected to a vehicle, turns the Scan Tool “On” and “Off”. When
the Tool is connected to a vehicle, links the Scan Tool to the
vehicle’s PCM to retrieve diagnostic data from the computer’s
memory.
5. M button – When pressed, displays the Main Menu.
6. LD button – When pressed while linked to a vehicle, places the
Scan Tool in Live Data mode.
7.
UP button – When in MENU mode, scrolls UP through the menu
and submenu selection options. When LINKED to a vehicle, scrolls
UP through the current display screen to display any additional data.
8.
ENTER button - When in MENU mode, confirms the selected
option or value.
9.
DOWN button - When in MENU mode, scrolls DOWN through
the menu and submenu selection options. When LINKED to a
vehicle, scrolls DOWN through the current display screen to display
any additional data.
10. GREEN LED - Indicates that all engine systems are running
normally (all Monitors on the vehicle are active and performing their
diagnostic testing, and no DTCs are present).
11. YELLOW LED - Indicates there is a possible problem. A “Pending”
DTC is present and/or some of the vehicle’s emission monitors have
not run their diagnostic testing.
12. RED LED - Indicates there is a problem in one or more of the
vehicle’s systems. The red LED is also used to show that DTC(s)
are present. DTCs are shown on the Tool’s display. In this case, the
Malfunction Indicator (“Check Engine”) lamp on the vehicle’s
instrument panel will light steady on.
13. Display - Displays settings Menu and submenus, test results, Scan
Tool functions and Monitor status information. See DISPLAY
FUNCTIONS, following, for more details.
14. CABLE - Connects the Tool to the vehicle’s Data Link Connector
(DLC).
8
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Scan Tool Controls
DISPLAY FUNCTIONS
DISPLAY FUNCTIONS
2
1
11 12
13
3
4
5
6
14
7
10
8
9
Figure 2. Display Functions
See Figure 2 for the locations of items 1 through 14, following.
1. I/M MONITOR STATUS field - Identifies the I/M Monitor status area.
2. Monitor icons - Indicate which Monitors are supported by the
vehicle under test, and whether or not the associated Monitor has
run its diagnostic testing (Monitor status). When a Monitor icon is
solid, it indicates that the associated Monitor has completed its
diagnostic testing. When a Monitor icon is flashing, it indicates that
the vehicle supports the associated Monitor, but the Monitor has not
yet run its diagnostic testing.
3.
Vehicle icon - Indicates whether or not the Scan Tool is being
properly powered through the vehicle’s Data Link Connector (DLC).
A visible icon indicates that the Scan Tool is being powered through
the vehicle’s DLC connector.
4.
Link icon - Indicates whether or not the Scan Tool is
communicating (linked) with the vehicle’s on-board computer. When
visible, the Scan Tool is communicating with the computer. If the
Link icon is not visible, the Scan Tool is not communicating with the
computer.
5.
Computer icon - When this icon is visible it indicates that the
Scan Tool is linked to a personal computer. Optional software is
available that makes it possible to upload retrieved data to a
personal computer.
6.
Scan Tool Internal Battery icon - When visible, indicates the
Scan Tool batteries are “low” and should be replaced. If the
batteries are not replaced when the battery symbol is "on", all 3
LEDs will light up as a last resort indicator to warn you that the
batteries need replacement. No data will be displayed on screen
when all 3 LEDs are lit.
3160d
9
Scan Tool Controls
DISPLAY FUNCTIONS
7. DTC Display Area - Displays the Diagnostic Trouble Code (DTC)
number. Each fault is assigned a code number that is specific to that
fault.
8. Test Data Display Area - Displays DTC definitions, Freeze Frame
data and other pertinent test information messages.
9. FREEZE FRAME icon - Indicates that there is Freeze Frame data
from “Priority Code” (Code #1) stored in the vehicle’s computer
memory.
10. PERMANENT icon - Indicates the currently displayed DTC is a
“Permanent” code.
11. PENDING icon - Indicates the currently displayed DTC is a
“Pending” code.
12. MIL icon - Indicates the status of the Malfunction Indicator Lamp
(MIL). The MIL icon is visible only when a DTC has commanded the
MIL on the vehicle’s dashboard to light.
13. Code Number Sequence - The Scan Tool assigns a sequence
number to each DTC that is present in the computer’s memory,
starting with “01.” This number indicates which code is currently
displayed. Code number “01” is always the highest priority code,
and the one for which “Freeze Frame” data has been stored.
If “01” is a “Pending” code, there may or may not be “Freeze
Frame” data stored in memory.
14. Code Enumerator - Indicates the total number of codes retrieved
from the vehicle’s computer.
10
3160d
Onboard Diagnostics
COMPUTER ENGINE CONTROLS
COMPUTER ENGINE CONTROLS
The Introduction of Electronic Engine Controls
Electronic Computer Control Systems make it possible
for vehicle manufacturers to comply with the tougher
emissions and fuel efficiency standards mandated by
State and Federal Governments.
As a result of increased air pollution (smog) in large cities,
such as Los Angeles, the California Air Resources Board
(CARB) and the Environmental Protection Agency (EPA)
set new regulations and air pollution standards to deal with
the problem. To further complicate matters, the energy crisis of
the early 1970s caused a sharp increase in fuel prices over a
short period. As a result, vehicle manufacturers were not only
required to comply with the new emissions standards, they also
had to make their vehicles more fuel-efficient. Most vehicles
were required to meet a miles-per-gallon (MPG) standard set by the U.S.
Federal Government.
Precise fuel delivery and spark timing are needed to reduce vehicle
emissions. Mechanical engine controls in use at the time (such as
ignition points, mechanical spark advance and the carburetor)
responded too slowly to driving conditions to properly control fuel
delivery and spark timing. This made it difficult for vehicle manufacturers
to meet the new standards.
A new Engine Control System had to be designed and integrated with
the engine controls to meet the stricter standards. The new system had
to:
„
Respond instantly to supply the proper mixture of air and fuel for any
driving condition (idle, cruising, low-speed driving, high-speed
driving, etc.).
„
Calculate instantly the best time to “ignite” the air/fuel mixture for
maximum engine efficiency.
„
Perform both these tasks without affecting vehicle performance or
fuel economy.
Vehicle Computer Control Systems can perform millions of calculations
each second. This makes them an ideal substitute for the slower
mechanical engine controls. By switching from mechanical to electronic
engine controls, vehicle manufacturers are able to control fuel delivery
and spark timing more precisely. Some newer Computer Control
Systems also provide control over other vehicle functions, such as
transmission, brakes, charging, body, and suspension systems.
3160d
11
Onboard Diagnostics
COMPUTER ENGINE CONTROLS
The Basic Engine Computer Control System
The Computer Control System consists of an on-board
computer and several related control devices (sensors,
switches, and actuators).
The on-board computer is the heart of the Computer
Control System. The computer contains several programs
with preset reference values for air/fuel ratio, spark or
ignition timing, injector pulse width, engine speed, etc.
Separate values are provided for various driving conditions,
such as idle, low speed driving, high-speed driving, low load,
or high load. The preset reference values represent the ideal
air/fuel mixture, spark timing, transmission gear selection,
etc., for any driving condition. These values are programmed
by the vehicle manufacturer, and are specific to each vehicle model.
Most on-board computers are located inside the vehicle behind the dashboard,
under the passenger’s or driver’s seat, or behind the right kick panel. However,
some manufacturers may still position it in the engine compartment.
Vehicle sensors, switches, and actuators are located throughout the
engine, and are connected by electrical wiring to the on-board computer.
These devices include oxygen sensors, coolant temperature sensors,
throttle position sensors, fuel injectors, etc. Sensors and switches are
input devices. They provide signals representing current engine
operating conditions to the computer. Actuators are output devices. They
perform actions in response to commands received from the computer.
The on-board computer receives information inputs from sensors and
switches located throughout the engine. These devices monitor critical
engine conditions such as coolant temperature, engine speed, engine
load, throttle position, air/fuel ratio etc.
The computer compares the values received from these sensors with its
preset reference values, and makes corrective actions as needed so
that the sensor values always match the preset reference values for the
current driving condition. The computer makes adjustments by
commanding other devices such as the fuel injectors, idle air control,
EGR valve or Ignition Module to perform these actions.
TYPICAL COMPUTER
CONTROL SYSTEM
OUTPUT DEVICES
Fuel Injectors
Idle Air Control
EGR Valve
Ignition Module
On-Board
Computer
INPUT DEVICES
Coolant Temperature Sensor
Throttle Position Sensor
Fuel Injectors
12
INPUT DEVICES
Oxygen Sensors
3160d
Onboard Diagnostics
COMPUTER ENGINE CONTROLS
Vehicle operating conditions are constantly changing. The computer
continuously makes adjustments or corrections (especially to the air/fuel
mixture and spark timing) to keep all the engine systems operating
within the preset reference values.
On-Board Diagnostics - First Generation (OBD1)
With the exception of some 1994 and 1995 vehicles,
most vehicles from 1982 to 1995 are equipped with
some type of first generation On-Board Diagnostics.
Beginning in 1988, California’s Air Resources Board
(CARB), and later the Environmental Protection Agency (EPA)
required vehicle manufacturers to include a self-diagnostic
program in their on-board computers. The program would be
capable of identifying emissions-related faults in a system. The
first generation of Onboard Diagnostics came to be known as
OBD1.
OBD1 is a set of self-testing and diagnostic instructions
programmed into the vehicle’s on-board computer. The
programs are specifically designed to detect failures in the sensors,
actuators, switches and wiring of the various vehicle emissions-related
systems. If the computer detects a failure in any of these components or
systems, it lights an indicator on the dashboard to alert the driver. The
indicator lights only when an emissions-related problem is detected.
The computer also assigns a numeric code for each specific problem
that it detects, and stores these codes in its memory for later retrieval.
These codes can be retrieved from the computer’s memory with the use
of a “Code Reader” or a “Scan Tool.”
On-Board Diagnostics - Second Generation (OBD2)
In addition to performing all the
functions of the OBD1 System, the
The OBD2 System is
OBD2 System has been enhanced with
an enhancement of the
new Diagnostic Programs. These
OBD1 System.
programs closely monitor the functions
of various emissions-related components and systems (as well as other
systems) and make this information readily available (with
the proper equipment) to the technician for evaluation.
The California Air Resources Board (CARB) conducted
studies on OBD1 equipped vehicles. The information that was
gathered from these studies showed the following:
„
3160d
A large number of vehicles had deteriorating or degraded
emissions-related components. These components were
causing an increase in emissions.
13
Onboard Diagnostics
COMPUTER ENGINE CONTROLS
„
Because OBD1 systems only detect failed components, the
degraded components were not setting codes.
„
Some emissions problems related to degraded components only
occur when the vehicle is being driven under a load. The emission
checks being conducted at the time were not performed under
simulated driving conditions. As a result, a significant number of
vehicles with degraded components were passing Emissions Tests.
„
Codes, code definitions, diagnostic connectors, communication
protocols and emissions terminology were different for each
manufacturer. This caused confusion for the technicians working on
different make and model vehicles.
To address the problems made evident by this study, CARB and the
EPA passed new laws and standardization requirements. These laws
required that vehicle manufacturers to equip their new vehicles with
devices capable of meeting all of the new emissions standards and
regulations. It was also decided that an enhanced on-board diagnostic
system, capable of addressing all of these problems, was needed. This
new system is known as “On-Board Diagnostics Generation Two
(OBD2).” The primary objective of the OBD2 system is to comply with
the latest regulations and emissions standards established by CARB
and the EPA.
The Main Objectives of the OBD2 System are:
„
To detect degraded and/or failed emissions-related components or
systems that could cause tailpipe emissions to exceed by 1.5 times
the Federal Test Procedure (FTP) standard.
„
To expand emissions-related system monitoring. This includes a set
of computer run diagnostics called Monitors. Monitors perform
diagnostics and testing to verify that all emissions-related
components and/or systems are operating correctly and within the
manufacturer’s specifications.
„
To use a standardized Diagnostic Link Connector (DLC) in all
vehicles. (Before OBD2, DLCs were of different shapes and sizes.)
„
To standardize the code numbers, code definitions and language
used to describe faults. (Before OBD2, each vehicle manufacturer
used their own code numbers, code definitions and language to
describe the same faults.)
„
To expand the operation of the Malfunction Indicator Lamp (MIL).
„
To standardize communication procedures and protocols between
the diagnostic equipment (Scan Tools, Code Readers, etc.) and the
vehicle’s on-board computer.
OBD2 Terminology
The following terms and their definitions are related to OBD2 systems.
Read and reference this list as needed to aid in the understanding of
OBD2 systems.
14
3160d
Onboard Diagnostics
COMPUTER ENGINE CONTROLS
„
Powertrain Control Module (PCM) - The PCM is the OBD2
accepted term for the vehicle’s “on-board computer.” In addition
to controlling the engine management and emissions systems,
the PCM also participates in controlling the powertrain
(transmission) operation. Most PCMs also have the ability to
communicate with other computers on the vehicle (ABS, ride
control, body, etc.).
„
Monitor - Monitors are “diagnostic routines” programmed into the
PCM. The PCM utilizes these programs to run diagnostic tests, and
to monitor operation of the vehicle’s emissions-related components
or systems to ensure they are operating correctly and within the
vehicle’s manufacturer specifications. Currently, up to fifteen
Monitors are used in OBD2 systems. Additional Monitors will be
added as the OBD2 system is further developed.
Not all vehicles support all fifteen Monitors.
„
Enabling Criteria - Each Monitor is designed to test and monitor
the operation of a specific part of the vehicle’s emissions system
(EGR system, oxygen sensor, catalytic converter, etc.). A specific
set of “conditions” or “driving procedures” must be met before the
computer can command a Monitor to run tests on its related system.
These “conditions” are known as “Enabling Criteria.” The
requirements and procedures vary for each Monitor. Some Monitors
only require the ignition key to be turned “On” for them to run and
complete their diagnostic testing. Others may require a set of
complex procedures, such as, starting the vehicle when cold,
bringing it to operating temperature, and driving the vehicle under
specific conditions before the Monitor can run and complete its
diagnostic testing.
„
Monitor Has/Has Not Run - The terms “Monitor has run” or
“Monitor has not run” are used throughout this manual. “Monitor
has run,” means the PCM has commanded a particular Monitor to
perform the required diagnostic testing on a system to ensure the
system is operating correctly (within factory specifications). The term
“Monitor has not run” means the PCM has not yet commanded a
particular Monitor to perform diagnostic testing on its associated part
of the emissions system.
„
Trip - A Trip for a particular Monitor requires that the vehicle is
being driven in such a way that all the required “Enabling Criteria”
for the Monitor to run and complete its diagnostic testing are met.
The “Trip Drive Cycle” for a particular Monitor begins when the
ignition key is turned “On.” It is successfully completed when all the
“Enabling Criteria” for the Monitor to run and complete its diagnostic
testing are met by the time the ignition key is turned “Off.” Since
each of the fifteen monitors is designed to run diagnostics and
testing on a different part of the engine or emissions system, the
“Trip Drive Cycle” needed for each individual Monitor to run and
complete varies.
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15
Onboard Diagnostics
DIAGNOSTIC TROUBLE CODES (DTCs)
„
OBD2 Drive Cycle - An OBD2 Drive Cycle is an extended set of driving
procedures that takes into consideration the various types of driving
conditions encountered in real life. These conditions may include
starting the vehicle when it is cold, driving the vehicle at a steady speed
(cruising), accelerating, etc. An OBD2 Drive Cycle begins when the
ignition key is turned “On” (when cold) and ends when the vehicle has
been driven in such a way as to have all the “Enabling Criteria” met for
all its applicable Monitors. Only those trips that provide the Enabling
Criteria for all Monitors applicable to the vehicle to run and complete
their individual diagnostic tests qualify as an OBD2 Drive Cycle. OBD2
Drive Cycle requirements vary from one model of vehicle to another.
Vehicle manufacturers set these procedures. Consult your vehicle’s
service manual for OBD2 Drive Cycle procedures.
Do not confuse a “Trip” Drive Cycle with an OBD2 Drive Cycle. A
“Trip” Drive Cycle provides the “Enabling Criteria” for one specific
Monitor to run and complete its diagnostic testing. An OBD2 Drive
Cycle must meet the “Enabling Criteria” for all Monitors on a
particular vehicle to run and complete their diagnostic testing.
„
Warm-up Cycle - Vehicle operation after an engine off period where
engine temperature rises at least 40°F (22°C) from its temperature
before starting, and reaches at least 160°F (70°C). The PCM uses
warm-up cycles as a counter to automatically erase a specific code
and related data from its memory. When no faults related to the
original problem are detected within a specified number of warm-up
cycles, the code is erased automatically.
DIAGNOSTIC TROUBLE CODES (DTCs)
Diagnostic Trouble Codes (DTCs) are
Diagnostic Trouble
meant to guide you to the proper
service procedure in the vehicle’s
Codes (DTCs) are
service manual. DO NOT replace parts
codes that identify a
based only on DTCs without first
specific problem area.
consulting the vehicle’s service manual
for proper testing procedures for that
particular system, circuit or component.
DTCs are alphanumeric codes that are used to identify a
problem that is present in any of the systems that are
monitored by the on-board computer (PCM). Each trouble
code has an assigned message that identifies the circuit,
component or system area where the problem was found.
OBD2 diagnostic trouble codes are made up of five characters:
„
The 1st character is a letter (B, C, P or U). It identifies the “main
system” where the fault occurred (Body, Chassis, Powertrain, or
Network).
„
The 2nd character is a numeric digit (0 thru 3). It identifies the
“type” of code (Generic or Manufacturer-Specific).
Generic DTCs are codes that are used by all vehicle manufacturers. The standards for generic DTCs, as well as their
definitions, are set by the Society of Automotive Engineers (SAE).
16
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DIAGNOSTIC TROUBLE CODES (DTCs)
Manufacturer-Specific DTCs are codes that are controlled by
the vehicle manufacturers. The Federal Government does not
require vehicle manufacturers to go beyond the standardized
generic DTCs in order to comply with the new OBD2 emissions
standards. However, manufacturers are free to expand beyond
the standardized codes to make their systems easier to
diagnose.
„
The 3rd character is a letter or a numeric digit (0 thru 9, A thru F).
It identifies the specific system or sub-system where the problem is
located.
„
The 4th and 5th characters are letters or numeric digits (0 thru 9, A
thru F). They identify the section of the system that is malfunctioning.
OBD2 DTC EXAMPLE
P0201 - Injector Circuit Malfunction, Cylinder 1
B
C
P
U
-
Body
Chassis
Powertrain
Network
P0201
0 - Generic
1 - Manufacturer Specific
2 - Generic ("P" Codes) and Manufacturer
Specific ("B", "C" and "U" Codes)
3 - Includes both Generic and Manufacturer
Specific Codes
Identifies the system where the problem is
located. "P" Code systems are listed below.
"B", "C" and "U" Code systems will vary.
0 - Fuel and Air Metering; Auxiliary Emission
Controls
1 - Fuel and Air Metering
2 - Fuel and Air Metering (injector circuit
malfunction only)
3 - Ignition System or Misfire
4 - Auxiliary Emission Control System
5 - Vehicle Speed Control and Idle Control
System
6 - Computer Output Circuits
7 - Transmission
8 - Transmission
9 - Transmission
A - Hybrid Propulsion
B - Hybrid Propulsion
C - Hybrid Propulsion
Identifies what section of the system
is malfunctioning
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Onboard Diagnostics
DIAGNOSTIC TROUBLE CODES (DTCs)
DTCs and MIL Status
When the vehicle’s on-board computer detects
a failure in an emissions-related component or
system, the computer’s internal diagnostic
program assigns a diagnostic trouble code
(DTC) that points to the system (and subsystem)
where the fault was found. The diagnostic
program saves the code in the computer’s
memory. It records a “Freeze Frame” of
conditions present when the fault was found, and lights the Malfunction
Indicator Lamp (MIL). Some faults require detection for two trips in a row
before the MIL is turned on.
The “Malfunction Indicator Lamp” (MIL) is the accepted term
used to describe the lamp on the dashboard that lights to warn
the driver that an emissions-related fault has been found.
Some manufacturers may still call this lamp a “Check Engine”
or “Service Engine Soon” light.
There are two types of DTCs used for emissions-related faults: Type “A”
and Type “B.” Type “A” codes are “One-Trip” codes; Type “B” DTCs are
usually Two-Trip DTCs.
When a Type “A” DTC is found on the First Trip, the following events
take place:
„
The computer commands the MIL “On” when the failure is first found.
„
If the failure causes a severe misfire that may cause damage to the
catalytic converter, the MIL “flashes” once per second. The MIL
continues to flash as long as the condition exists. If the condition
that caused the MIL to flash is no longer present, the MIL will light
“steady” On.
„
A DTC is saved in the computer’s memory for later retrieval.
„
A “Freeze Frame” of the conditions present in the engine or emissions
system when the MIL was ordered “On” is saved in the computer’s
memory for later retrieval. This information shows fuel system status
(closed loop or open loop), engine load, coolant temperature, fuel trim
value, MAP vacuum, engine RPM and DTC priority.
When a Type “B” DTC is found on the First Trip, the following events
take place:
„
The computer sets a Pending DTC, but the MIL is not ordered “On.”
“Freeze Frame” data may or may not be saved at this time
depending on manufacturer. The Pending DTC is saved in the
computer’s memory for later retrieval.
„
If the failure is found on the second consecutive trip, the MIL is
ordered “On.” “Freeze Frame” data is saved in the computer’s
memory.
„
If the failure is not found on the second Trip, the Pending DTC is
erased from the computer’s memory.
The MIL will stay lit for both Type “A” and Type “B” codes until one of
the following conditions occurs:
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OBD2 MONITORS
„
If the conditions that caused the MIL to light are no longer present
for the next three trips in a row, the computer automatically turns the
MIL “Off” if no other emissions-related faults are present. However,
the DTCs remain in the computer’s memory as a history code for 40
warm-up cycles (80 warm-up cycles for fuel and misfire faults). The
DTCs are automatically erased if the fault that caused them to be
set is not detected again during that period.
„
Misfire and fuel system faults require three trips with “similar
conditions” before the MIL is turned “Off.” These are trips where the
engine load, RPM and temperature are similar to the conditions
present when the fault was first found.
After the MIL has been turned off, DTCs and Freeze Frame
data stay in the computer’s memory.
„
Erasing the DTCs from the computer’s memory can also turn off the
MIL. See ERASING DIAGNOSTIC TROUBLE CODES (DTCs) on
page 49, before erasing codes from the computer’s memory. If a
Diagnostic Tool or Tool is used to erase the codes, Freeze Frame
data will also be erased.
OBD2 MONITORS
To ensure the correct operation of the various emissions-related
components and systems, a diagnostic program was developed and
installed in the vehicle’s on-board computer. The program has several
procedures and diagnostic strategies. Each procedure or diagnostic
strategy is made to monitor the operation of, and run diagnostic tests on,
a specific emissions-related component or system. These tests ensure
the system is running correctly and is within the manufacturer’s
specifications. On OBD2 systems, these procedures and diagnostic
strategies are called “Monitors.”
Currently, fifteen Monitors are supported by OBD2 systems. Additional
monitors may be added as a result of Government regulations as the
OBD2 system grows and matures. Not all vehicles support all fifteen
Monitors. Additionally, some Monitors are supported by “spark ignition”
vehicles only, while others are supported by “compression ignition”
vehicles only.
Monitor operation is either “Continuous” or “Non-Continuous,”
depending on the specific monitor.
Continuous Monitors
Three of these Monitors are designed to constantly monitor their
associated components and/or systems for proper operation.
Continuous Monitors run constantly when the engine is running. The
Continuous Monitors are:
Comprehensive Component Monitor (CCM)
Misfire Monitor
Fuel System Monitor
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Onboard Diagnostics
OBD2 MONITORS
Non-Continuous Monitors
The other twelve Monitors are “non-continuous” Monitors. “Noncontinuous” Monitors perform and complete their testing once per trip.
The “non-continuous” Monitors are:
Oxygen Sensor Monitor
Oxygen Sensor Heater Monitor
Catalyst Monitor
Heated Catalyst Monitor
EGR System Monitor
EVAP System Monitor
Secondary Air System Monitor
The following Monitors became standard beginning in 2010.
The majority of vehicles produced before this time will not
support these Monitors
NMHC Monitor
NOx Adsorber Monitor
Boost Pressure System Monitor
Exhaust Gas Sensor Monitor
PM Filter Monitor
The following provides a brief explanation of the function of each Monitor:
Comprehensive Component Monitor (CCM) - This Monitor
continuously checks all inputs and outputs from sensors,
actuators, switches and other devices that provide a signal to the
computer. The Monitor checks for shorts, opens, out of range value,
functionality and “rationality.”
Rationality: Each input signal is compared against all other
inputs and against information in the computer’s memory to see
if it makes sense under the current operating conditions.
Example: The signal from the throttle position sensor indicates
the vehicle is in a wide-open throttle condition, but the vehicle is
really at idle, and the idle condition is confirmed by the signals
from all other sensors. Based on the input data, the computer
determines that the signal from the throttle position sensor is not
rational (does not make sense when compared to the other
inputs). In this case, the signal would fail the rationality test.
The CCM is supported by both “spark ignition” vehicles and
“compression ignition” vehicles. The CCM may be either a “One-Trip” or
a “Two-Trip” Monitor, depending on the component.
20
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Onboard Diagnostics
OBD2 MONITORS
Fuel System Monitor - This Monitor uses a Fuel System
Correction program, called Fuel Trim, inside the on-board
computer. Fuel Trim is a set of positive and negative values that
represent adding or subtracting fuel from the engine. This program is
used to correct for a lean (too much air/not enough fuel) or rich (too
much fuel/not enough air) air-fuel mixture. The program is designed to
add or subtract fuel, as needed, up to a certain percent. If the correction
needed is too large and exceeds the time and percent allowed by the
program, a fault is indicated by the computer.
The Fuel System Monitor is supported by both “spark ignition” vehicles
and “compression ignition” vehicles. The Fuel System Monitor may be a
“One-Trip” or “Two-Trip” Monitor, depending on the severity of the
problem.
Misfire Monitor - This Monitor continuously checks for engine misfires.
A misfire occurs when the air-fuel mixture in the cylinder does not ignite.
The misfire Monitor uses changes in crankshaft speed to sense an engine
misfire. When a cylinder misfires, it no longer contributes to the speed of the
engine, and engine speed decreases each time the affected cylinder(s) misfire.
The misfire Monitor is designed to sense engine speed fluctuations and
determine from which cylinder(s) the misfire is coming, as well as how bad the
misfire is. There are three types of engine misfires, Types 1, 2, and 3.
- Type 1 and Type 3 misfires are two-trip monitor faults. If a fault is sensed
on the first trip, the computer temporarily saves the fault in its memory as
a Pending Code. The MIL is not commanded on at this time. If the fault is
found again on the second trip, under similar conditions of engine speed,
load and temperature, the computer commands the MIL “On,” and the
code is saved in its long term memory.
- Type 2 misfires are the most severe type of misfire. When a Type 2
misfire is sensed on the first trip, the computer commands the MIL to
light when the misfire is sensed. If the computer determines that a
Type 2 misfire is severe , and may cause catalytic converter damage,
it commands the MIL to “flash” once per second as soon as the
misfire is sensed. When the misfire is no longer present, the MIL
reverts to steady “On” condition.
The Misfire Monitor is supported by both “spark ignition” vehicles and
“compression ignition” vehicles.
Catalyst Monitor - The catalytic converter is a device that is
installed downstream of the exhaust manifold. It helps to oxidize
(burn) the unburned fuel (hydrocarbons) and partially burned fuel
(carbon monoxide) left over from the combustion process. To
accomplish this, heat and catalyst materials inside the converter react
with the exhaust gases to burn the remaining fuel. Some materials
inside the catalytic converter also have the ability to store oxygen, and
release it as needed to oxidize hydrocarbons and carbon monoxide. In
the process, it reduces vehicle emissions by converting the polluting
gases into carbon dioxide and water.
The computer checks the efficiency of the catalytic converter by
monitoring the oxygen sensors used by the system. One sensor is located
before (upstream of) the converter; the other is located after (downstream
of) the converter. If the catalytic converter loses its ability to store oxygen,
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Onboard Diagnostics
OBD2 MONITORS
the downstream sensor signal voltage becomes almost the same as the
upstream sensor signal. In this case, the monitor fails the test.
The Catalyst Monitor is supported by “spark ignition” vehicles only. The
Catalyst Monitor is a “Two-Trip” Monitor. If a fault is found on the first
trip, the computer temporarily saves the fault in its memory as a
Pending Code. The computer does not command the MIL on at this time.
If the fault is sensed again on the second trip, the computer commands
the MIL “On” and saves the code in its long-term memory.
Heated Catalyst Monitor - Operation of the “heated” catalytic
converter is similar to the catalytic converter. The main difference
is that a heater is added to bring the catalytic converter to its operating
temperature more quickly. This helps reduce emissions by reducing the
converter’s down time when the engine is cold. The Heated Catalyst
Monitor performs the same diagnostic tests as the catalyst Monitor, and
also tests the catalytic converter’s heater for proper operation.
The Heated Catalyst Monitor is supported by “spark ignition” vehicles
only. This Monitor is also a “Two-Trip” Monitor.
Exhaust Gas Recirculation (EGR) Monitor - The Exhaust Gas
Recirculation (EGR) system helps reduce the formation of
Oxides of Nitrogen during combustion. Temperatures above 2500°F
cause nitrogen and oxygen to combine and form Oxides of Nitrogen in
the combustion chamber. To reduce the formation of Oxides of Nitrogen,
combustion temperatures must be kept below 2500°F. The EGR system
recirculates small amounts of exhaust gas back into the intake manifold,
where it is mixed with the incoming air/fuel mixture. This reduces
combustion temperatures by up to 500°F. The computer determines
when, for how long, and how much exhaust gas is recirculated back to
the intake manifold. The EGR Monitor performs EGR system function
tests at preset times during vehicle operation.
The EGR Monitor is supported by both “spark ignition” vehicles and
“compression ignition” vehicles. The EGR Monitor is a “Two-Trip”
Monitor. If a fault is found on the first trip, the computer temporarily
saves the fault in its memory as a Pending Code. The computer does
not command the MIL on at this time. If the fault is sensed again on the
second trip, the computer commands the MIL “On,” and saves the code
in its long-term memory.
Evaporative System (EVAP) Monitor - OBD2 vehicles are
equipped with a fuel Evaporative system (EVAP) that helps
prevent fuel vapors from evaporating into the air. The EVAP system
carries fumes from the fuel tank to the engine where they are burned
during combustion. The EVAP system may consist of a charcoal
canister, fuel tank cap, purge solenoid, vent solenoid, flow monitor, leak
detector and connecting tubes, lines and hoses.
Fumes are carried from the fuel tank to the charcoal canister by hoses
or tubes. The fumes are stored in the charcoal canister. The computer
controls the flow of fuel vapors from the charcoal canister to the engine
via a purge solenoid. The computer energizes or de-energizes the purge
solenoid (depending on solenoid design). The purge solenoid opens a
valve to allow engine vacuum to draw the fuel vapors from the canister
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OBD2 MONITORS
into the engine where the vapors are burned. The EVAP Monitor checks
for proper fuel vapor flow to the engine, and pressurizes the system to
test for leaks. The computer runs this Monitor once per trip.
The EVAP Monitor is supported by “spark ignition” vehicles only. The
EVAP Monitor is a “Two-Trip” Monitor. If a fault is found on the first trip,
the computer temporarily saves the fault in its memory as a Pending
Code. The computer does not command the MIL on at this time. If the
fault is sensed again on the second trip, the PCM commands the MIL
“On,” and saves the code in its long-term memory.
Oxygen Sensor Heater Monitor - The Oxygen Sensor Heater
Monitor tests the operation of the oxygen sensor’s heater. There
are two modes of operation on a computer-controlled vehicle: “openloop” and “closed-loop.” The vehicle operates in open-loop when the
engine is cold, before it reaches normal operating temperature. The
vehicle also goes to open-loop mode at other times, such as heavy load
and full throttle conditions. When the vehicle is running in open-loop, the
oxygen sensor signal is ignored by the computer for air/fuel mixture
corrections. Engine efficiency during open-loop operation is very low,
and results in the production of more vehicle emissions.
Closed-loop operation is the best condition for both vehicle emissions
and vehicle operation. When the vehicle is operating in closed-loop, the
computer uses the oxygen sensor signal for air/fuel mixture corrections.
In order for the computer to enter closed-loop operation, the oxygen
sensor must reach a temperature of at least 600°F. The oxygen sensor
heater helps the oxygen sensor reach and maintain its minimum
operating temperature (600°F) more quickly, to bring the vehicle into
closed-loop operation as soon as possible.
The Oxygen Sensor Heater Monitor is supported by “spark ignition”
vehicles only. The Oxygen Sensor Heater Monitor is a “Two-Trip”
Monitor. If a fault is found on the first trip, the computer temporarily
saves the fault in its memory as a Pending Code. The computer does
not command the MIL on at this time. If the fault is sensed again on the
second trip, the computer commands the MIL “On,” and saves the code
in its long-term memory.
Oxygen Sensor Monitor - The Oxygen Sensor monitors how
much oxygen is in the vehicle’s exhaust. It generates a varying
voltage of up to one volt, based on how much oxygen is in the exhaust
gas, and sends the signal to the computer. The computer uses this
signal to make corrections to the air/fuel mixture. If the exhaust gas has
a large amount of oxygen (a lean air/fuel mixture), the oxygen sensor
generates a “low” voltage signal. If the exhaust gas has very little
oxygen (a rich mixture condition), the oxygen sensor generates a “high”
voltage signal. A 450mV signal indicates the most efficient, and least
polluting, air/fuel ratio of 14.7 parts of air to one part of fuel.
The oxygen sensor must reach a temperature of at least 600-650°F,
and the engine must reach normal operating temperature, for the
computer to enter into closed-loop operation. The oxygen sensor only
functions when the computer is in closed-loop. A properly operating
oxygen sensor reacts quickly to any change in oxygen content in the
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Onboard Diagnostics
OBD2 MONITORS
exhaust stream. A faulty oxygen sensor reacts slowly, or its voltage
signal is weak or missing.
The Oxygen Sensor Monitor is supported by “spark ignition” vehicles
only. The Oxygen Sensor Monitor is a “Two-Trip” monitor. If a fault is
found on the first trip, the computer temporarily saves the fault in its
memory as a Pending Code. The computer does not command the MIL
on at this time. If the fault is sensed again on the second trip, the
computer commands the MIL “On,” and saves the code in its long-term
memory.
Secondary Air System Monitor - When a cold engine is first
started, it runs in open-loop mode. During open-loop operation,
the engine usually runs rich. A vehicle running rich wastes fuel and
creates increased emissions, such as carbon monoxide and some
hydrocarbons. A Secondary Air System injects air into the exhaust
stream to aid catalytic converter operation:
1. It supplies the catalytic converter with the oxygen it needs to oxidize
the carbon monoxide and hydrocarbons left over from the
combustion process during engine warm-up.
2. The extra oxygen injected into the exhaust stream also helps the
catalytic converter reach operating temperature more quickly during
warm-up periods. The catalytic converter must heat to operating
temperature to work properly.
The Secondary Air System Monitor checks for component integrity and
system operation, and tests for faults in the system. The computer runs
this Monitor once per trip.
The Secondary Air System Monitor is a “Two-Trip” monitor. If a fault is
found on the first trip, the computer temporarily saves this fault in its
memory as a Pending Code. The computer does not command the MIL
on at this time. If the fault is sensed again on the second trip, the
computer commands the MIL “On,” and saves the code in its long-term
memory.
Non-Methane Hydrocarbon Catalyst (NMHC) Monitor - The
non-methane hydrocarbon catalyst is a type of catalytic converter.
It helps to remove non-methane hydrocarbons (NMH) left over from the
combustion process from the exhaust stream. To accomplish this, heat
and catalyst materials react with the exhaust gases to convert NMH to
less harmful compounds. The computer checks the efficiency of the
catalyst by monitoring the quantity of NMH in the exhaust stream. The
monitor also verifies that sufficient temperature is present to aid in
particulate matter (PM) filter regeneration.
The NMHC Monitor is supported by “compression ignition” vehicles only.
The NMHC Monitor is a “Two-Trip” Monitor. If a fault is found on the first
trip, the computer temporarily saves the fault in its memory as a
Pending Code. The computer does not command the MIL on at this time.
If the fault is sensed again on the second trip, the computer commands
the MIL “On,” and saves the code in its long-term memory.
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OBD2 MONITORS
NOx Aftertreatment Monitor - NOx aftertreatment is based on a
catalytic converter support that has been coated with a special
washcoat containing zeolites. NOx Aftertreatment is designed to reduce
oxides of nitrogen emitted in the exhaust stream. The zeolite acts as a
molecular "sponge" to trap the NO and NO2 molecules in the exhaust
stream. In some implementations, injection of a reactant before the
aftertreatment purges it. NO2 in particular is unstable, and will join with
hydrocarbons to produce H2O and N2. The NOx Aftertreatment Monitor
monitors the function of the NOx aftertreatment to ensure that tailpipe
emissions remain within acceptable limits.
The NOx Aftertreatment Monitor is supported by “compression ignition”
vehicles only. The NOx Aftertreatment Monitor is a “Two-Trip” Monitor. If
a fault is found on the first trip, the computer temporarily saves the fault
in its memory as a Pending Code. The computer does not command the
MIL on at this time. If the fault is sensed again on the second trip, the
computer commands the MIL “On,” and saves the code in its long-term
memory.
Boost Pressure System Monitor - The boost pressure system
serves to increase the pressure produced inside the intake
manifold to a level greater than atmospheric pressure. This increase in
pressure helps to ensure compete combustion of the air-fuel mixture.
The Boost Pressure System Monitor checks for component integrity and
system operation, and tests for faults in the system. The computer runs
this Monitor once per trip.
The Boost Pressure System Monitor is supported by “compression
ignition” vehicles only. The Boost Pressure System Monitor is a “TwoTrip” Monitor. If a fault is found on the first trip, the computer temporarily
saves the fault in its memory as a Pending Code. The computer does
not command the MIL on at this time. If the fault is sensed again on the
second trip, the computer commands the MIL “On,” and saves the code
in its long-term memory.
Exhaust Gas Sensor Monitor - The exhaust gas sensor is used
by a number of systems/monitors to determine the content of the
exhaust stream. The computer checks for component integrity, system
operation, and tests for faults in the system, as well as feedback faults
that may affect other emission control systems.
The Exhaust Gas Sensor Monitor is supported by “compression ignition”
vehicles only. The Exhaust Gas Sensor Monitor is a “Two-Trip” Monitor.
If a fault is found on the first trip, the computer temporarily saves the
fault in its memory as a Pending Code. The computer does not
command the MIL on at this time. If the fault is sensed again on the
second trip, the computer commands the MIL “On,” and saves the code
in its long-term memory.
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Onboard Diagnostics
OBD2 MONITORS
PM Filter Monitor - The particulate matter (PM) filter removes
particulate matter from the exhaust stream by filtration. The filter
has a honeycomb structure similar to a catalyst substrate, but with the
channels blocked at alternate ends. This forces the exhaust gas to flow
through the walls between the channels, filtering the particulate matter
out. The filters are self-cleaning by periodic modification of the exhaust
gas concentration in order to burn off the trapped particles (oxidizing the
particles to form CO2 and water). The computer monitors the efficiency
of the filter in trapping particulate matter, as well as the ability of the filter
to regenerate (self-clean).
The PM Filter Monitor is supported by “compression ignition” vehicles
only. The PM Filter Monitor is a “Two-Trip” Monitor. If a fault is found on
the first trip, the computer temporarily saves the fault in its memory as a
Pending Code. The computer does not command the MIL on at this time.
If the fault is sensed again on the second trip, the computer commands
the MIL “On,” and saves the code in its long-term memory.
OBD2 Reference Table
The table below lists current OBD2 Monitors, and indicates the following
for each Monitor:
A.
26
Monitor Type (how often does the Monitor run; Continuous or
Once per trip)
B.
Number of trips needed, with a fault present, to set a pending DTC
C.
Number of consecutive trips needed, with a fault present, to
command the MIL “On” and store a DTC
D.
Number of trips needed, with no faults present, to erase a Pending
DTC
E.
Number and type of trips or drive cycles needed, with no faults
present, to turn off the MIL
F.
Number of warm-up periods needed to erase the DTC from the
computer’s memory after the MIL is turned off
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OBD2 MONITORS
Name of
Monitor
A
B
C
D
E
F
Comprehensive
Component Monitor
Continuous
1
2
1
3
40
Misfire Monitor
(Type 1 and 3)
Continuous
1
2
1
3 - similar
conditions
80
Misfire Monitor
(Type 2)
Continuous
1
3 - similar
conditions
80
80
Fuel System Monitor
Continuous
1
1 or 2
1
3 - similar
conditions
Catalytic Converter
Monitor
Once per
trip
1
2
1
3 trips
40
Oxygen Sensor
Monitor
Once per
trip
1
2
1
3 trips
40
Oxygen Sensor
Heater Monitor
Once per
trip
1
2
1
3 trips
40
Exhaust Gas
Recirculation (EGR)
Monitor
Once per
trip
1
2
1
3 trips
40
Evaporative
Emissions Controls
Monitor
Once per
trip
1
2
1
3 trips
40
Secondary Air
System (AIR) Monitor
Once per
trip
1
2
1
3 trips
40
NMHC Monitor
Once per
trip
1
2
1
3 trips
40
Nox Adsorber Monitor
Once per
trip
1
2
1
3 trips
40
Boost Pressure
System Monitor
Once per
trip
1
2
1
3 trips
40
Exhaust Gas Sensor
Monitor
Once per
trip
1
2
1
3 trips
40
PM Filter Monitor
Once per
trip
1
2
1
3 trips
40
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Preparation for Testing
PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET
PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET
The purpose of this form is to help you gather preliminary information on
your vehicle before you retrieve codes. By having a complete account of
your vehicle's current problem(s), you will be able to systematically
pinpoint the problem(s) by comparing your answers to the fault codes
you retrieve. You can also provide this information to your mechanic to
assist in diagnosis and help avoid costly and unnecessary repairs. It is
important for you to complete this form to help you and/or your
mechanic have a clear understanding of your vehicle's problems.
NAME:
DATE:
VIN*:
YEAR:
MAKE:
MODEL:
ENGINE SIZE:
VEHICLE MILEAGE:
*VIN: Vehicle Identification Number, found at the base of the windshield
on a metallic plate, or at the driver door latch area (consult your vehicle
owner's manual for location).
TRANSMISSION:
†
Automatic
†
Manual
Please check all applicable items in each category.
DESCRIBE THE PROBLEM:
28
3160d
Preparation for Testing
PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET
WHEN DID YOU FIRST NOTICE THE PROBLEM:
†
Just Started
†
Started Last Week
†
Started Last Month
†
Other:
m
LIST ANY REPAIRS DONE IN THE PAST SIX MONTHS:
PROBLEMS STARTING
† No symptoms
†
Cranks, but will not start
†
†
Starts, but takes a long
time
†
Right after vehicle
comes to a stop
Will not crank
ENGINE QUITS OR STALLS
†
No symptoms
†
Right after starting
†
When shifting into gear
†
While idling
During steady-speed
driving
†
During acceleration
When parking
†
†
IDLING CONDITIONS
†
No symptoms
†
Is too slow at all times
†
Is too fast
†
Is sometimes too fast or
too slow
†
Is rough or uneven
†
Fluctuates up and down
RUNNING CONDITIONS
†
No symptoms
†
Backfires
†
Runs rough
Lacks power
†
†
†
†
Bucks and jerks
Misfires or cuts out
Engine knocks, pings or
rattles
†
Poor fuel economy
†
Surges
†
Hesitates or stumbles on
accelerations
†
Dieseling or run-on
3160d
29
Preparation for Testing
PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET
AUTOMATIC TRANSMISSION PROBLEMS (if applicable)
†
†
†
†
No symptoms
Shifts too early or too late
Changes gear incorrectly
PROBLEM OCCURS
Morning
†
†
†
Vehicle does not move
when in gear
Jerks or bucks
Afternoon
†
Anytime
†
Hot
ENGINE TEMPERATURE WHEN PROBLEM OCCURS
†
Cold
†
Warm
DRIVING CONDITIONS WHEN PROBLEM OCCURS
†
†
†
†
†
†
†
†
Short - less than 2 miles
2 - 10 miles
Long - more than 10 miles
Stop and go
While turning
While braking
At gear engagement
With A/C operating
†
†
†
†
†
†
†
With headlights on
During acceleration
Mostly driving downhill
Mostly driving uphill
Mostly driving level
Mostly driving curvy
roads
Mostly driving rough
roads
DRIVING HABITS
†
†
†
†
†
Mostly city driving
Highway
Park vehicle inside
Park vehicle outside
†
†
Drive less than 10 miles per day
Drive 10 to 50 miles per day
Drive more than 50 miles per
day
GASOLINE USED
†
†
†
87 Octane
89 Octane
†
91 Octane
More than 91 Octane
WEATHER CONDITIONS WHEN PROBLEM OCCURS
†
†
32 - 55° F (0 - 13° C)
Below freezing (32° F / 0° C)
†
Above 55° F (13° C)
CHECK ENGINE LIGHT / DASH WARNING LIGHT
†
Sometimes ON
†
†
Always ON
Never ON
PECULIAR SMELLS
†
†
†
"Hot"
Sulfur ("rotten egg")
Burning rubber
†
†
†
Gasoline
Burning oil
Electrical
STRANGE NOISES
†
†
30
Rattle
Knock
†
†
Squeak
Other
3160d
Preparation for Testing
BEFORE YOU BEGIN
BEFORE YOU BEGIN
The Scan Tool aids in monitoring
electronic- and emissions-related
faults in your vehicle and
retrieving fault codes related to
malfunctions in these systems.
Mechanical problems such as low
oil level or damaged hoses, wiring
or electrical connectors can cause poor engine performance and may also
cause a fault code to set. Fix any known mechanical problems before
performing any test. See your vehicle’s service manual or a mechanic for
more information.
Check the following areas before starting any test:
„
Check the engine oil, power steering fluid, transmission fluid (if
applicable), engine coolant and other fluids for proper levels. Top off
low fluid levels if needed.
„
Make sure the air filter is clean and in good condition. Make sure all
air filter ducts are properly connected. Check the air filter ducts for
holes, rips or cracks.
„
Make sure all engine belts are in good condition. Check for cracked,
torn, brittle, loose or missing belts.
„
Make sure mechanical linkages to engine sensors (throttle, gearshift
position, transmission, etc.) are secure and properly connected. See
your vehicle’s service manual for locations.
„
Check all rubber hoses (radiator) and steel hoses (vacuum/fuel) for
leaks, cracks, blockage or other damage. Make sure all hoses are
routed and connected properly.
„
Make sure all spark plugs are clean and in good condition. Check
for damaged, loose, disconnected or missing spark plug wires.
„
Make sure the battery terminals are clean and tight. Check for
corrosion or broken connections. Check for proper battery and
charging system voltages.
„
Check all electrical wiring and harnesses for proper connection.
Make sure wire insulation is in good condition, and there are no bare
wires.
„
Make sure the engine is mechanically sound. If needed, perform a
compression check, engine vacuum check, timing check (if
applicable), etc.
3160d
31
Preparation for Testing
VEHICLE SERVICE MANUALS
VEHICLE SERVICE MANUALS
Always refer to the manufacturer’s service manual for your vehicle
before performing any test or repair procedures. Contact your local car
dealership, auto parts store or bookstore for availability of these
manuals. The following companies publish valuable repair manuals:
„
Haynes Publications
861 Lawrence Drive
Newbury Park, California 91320
Phone: 800-442-9637
Web: www.haynes.com
„
Mitchell 1
14145 Danielson Street
Poway, California 92064
Phone: 888-724-6742
Web: www.m1products.com
„
Motor Publications
5600 Crooks Road, Suite 200
Troy, Michigan 48098
Phone: 800-426-6867
Web: www.motor.com
FACTORY SOURCES
Ford, GM, Chrysler, Honda, Isuzu, Hyundai and Subaru Service
Manuals
„
32
Helm Inc.
14310 Hamilton Avenue
Highland Park, Michigan 48203
Phone: 800-782-4356
Web: www.helminc.com
3160d
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
CODE RETRIEVAL PROCEDURE
Retrieving and using Diagnostic Trouble Codes (DTCs) for
troubleshooting vehicle operation is only one part of an
overall diagnostic strategy.
Never replace a part based only on the DTC definition.
Each DTC has a set of testing procedures, instructions and
flow charts that must be followed to confirm the location of
the problem. This information is found in the vehicle's
service manual. Always refer to the vehicle's service manual
for detailed testing instructions.
Check your vehicle thoroughly before performing
any test. See BEFORE YOU BEGIN on page 31 for
details.
ALWAYS observe safety precautions whenever working on a
vehicle. See SAFETY PRECAUTIONS on page 3 for more
information.
1. Turn the ignition off.
2. Locate the vehicle's 16-pin Data Link
Connector (DLC). See page 5 for
connector location.
Some DLCs have a plastic cover
that must be removed before
connecting
the
Tool
cable
connector.
If the Scan Tool is ON, turn it OFF
by pressing the POWER/LINK
button BEFORE connecting
the Tool to the DLC.
3. Connect the Scan Tool cable connector to the vehicle’s DLC. The
cable connector is keyed and will only fit one way.
„
If you have problems connecting the cable connector to the DLC,
rotate the connector 180° and try again.
„
If you still have problems, check the DLC on the vehicle and on
the Scan Tool. Refer to your vehicle’s service manual to properly
check the vehicle’s DLC.
4. Turn the ignition on. DO NOT start the engine.
5. When the Scan Tool’s cable connector is properly connected to the
vehicle’s DLC, the unit automatically turns ON.
„
3160d
If the unit does not power on automatically when connected to
the vehicle’s DLC connector, it usually indicates there is no
power present at the vehicle’s DLC connector. Check your fuse
panel and replace any burned-out fuses.
33
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
If replacing the fuse(s) does not correct the problem, consult
your vehicle’s repair manual to identify the proper computer
(PCM) fuse/circuit, and perform any necessary repairs before
proceeding.
6. The Scan Tool will automatically start a
check of the vehicle’s computer to
determine which type of communication
protocol it is using. When the Scan Tool
identifies the computer’s communication
protocol, a communication link is
established. The protocol type used by the
vehicle’s computer is shown on the display.
A PROTOCOL is a set of rules and
procedures for regulating data
transmission between computers,
and between testing equipment
and computers. As of this writing,
five different types of protocols
(ISO 9141, Keyword 2000, J1850
PWM, J1850 VPW and CAN) are in
use by vehicle manufacturers. The
Scan Tool automatically identifies the protocol type and
establishes a communication link with the vehicle’s computer.
7. After approximately 10~60 seconds, the Scan Tool will retrieve and
display any Diagnostic Trouble Codes, I/M Monitor Status and
Freeze Frame Data retrieved from the vehicle’s computer memory.
„
If the Scan Tool fails to link to the
vehicle’s computer a “Linking
Failed” message shows on the Scan
Tool’s display.
- Verify the connection at the DLC,
and verify the ignition is ON.
- Turn the ignition OFF, wait 5
seconds, then turn back ON to
reset the computer.
- Ensure your vehicle is OBD2 compliant. See VEHICLES
COVERED on page 5 for vehicle compliance verification
information.
„
34
The Scan Tool will display a code only
if codes are present in the vehicle’s
computer memory. If no codes are
present, the message “No Powertrain
DTCs or Freeze Frame Data presently
stored in the vehicle’s computer.
Press DTC button to continue”
displays. Press the SYSTEM MENU
button to enter the “OEM
Enhanced” mode (see THE SYSTEM MENU on page 38).
3160d
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
The Scan Tool is capable of retrieving and storing up to 32
codes in memory, for immediate or later viewing.
8. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
display elements.
„
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
„
A visible
icon indicates that the Scan Tool is linked to
(communicating with) the vehicle’s computer.
„
The I/M Monitor Status icons indicate the type and number of
Monitors the vehicle supports, and provides indications of the
current status of the vehicle’s Monitors. A solid Monitor icon
indicates the associated Monitor has run and completed its
testing. A blinking Monitor icon indicates the associated Monitor
has not run and completed its testing.
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved, and
whether or not the displayed code
commanded the MIL on. If the code
being displayed is a PENDING code,
the PENDING icon is shown. If the
code
being
displayed
is
a
PERMANENT code, the PERMANENT icon is shown.
„
The Diagnostic Trouble Code (DTC) and related code definition
are shown in the lower section of the display.
In the case of long code definitions, a small arrow is shown in the
upper/lower right-hand corner of the Scan Tool display area to
indicate the presence of additional information. Use the
and
buttons, as necessary, to view the additional information.
If a definition for the currently
displayed code is not available, an
advisory message shows on the
Tool’s display.
9. Read and interpret Diagnostic Trouble
Codes/system condition using the
display and the green, yellow and red
LEDs.
The green, yellow and red LEDs are used (with the display) as
visual aids to make it easier to determine engine system
conditions.
3160d
35
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
Green LED – Indicates that all
engine systems are “OK” and
operating normally. All monitors
supported by the vehicle have run
and performed their diagnostic
testing, and no trouble codes are
present. All Monitor icons will be
solid.
„
Yellow LED – Indicates one of the
following conditions:
A. A PENDING CODE IS PRESENT –
If the yellow LED is illuminated, it
may indicate a Pending code is
present. Check the Scan Tool’s
display for confirmation. A Pending
code is confirmed by the presence
of a numeric code and the word
PENDING on the Scan Tool’s
display.
B. MONITOR NOT RUN STATUS – If
the Scan Tool’s display shows a
zero (indicating there are no DTC’s
present in the vehicle’s computer
memory), but the yellow LED is
illuminated, it may be an indication
that some of the Monitors
supported by the vehicle have not
yet run and completed their
diagnostic testing. Check the Scan
Tool’s display for confirmation. All
Monitor icons that are blinking
have not yet run and completed
their diagnostic testing; all Monitor icons that are solid have
run and completed their diagnostic testing.
„ Red LED – Indicates there is a
problem with one or more of the
vehicle’s systems. The red LED is
also used to indicate that DTC(s)
are present (displayed on the Scan
Tool’s screen). In this case, the
Malfunction Indicator (Check Engine)
lamp on the vehicle’s instrument
panel will be illuminated.
„ DTC’s that start with “P0”, “P2”
and some “P3” are considered
Generic (Universal). All Generic DTC definitions are the
same on all OBD2 equipped vehicles. The Scan Tool
automatically displays the code definitions (if available) for
Generic DTC’s.
36
3160d
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
DTC’s that start with “P1” and some
“P3” are Manufacturer specific codes
and their code definitions vary with
each vehicle manufacturer. When a
Manufacturer specific DTC is retrieved,
the LCD display shows a list of vehicle
and DOWN
buttons, as
manufacturers. Use the UP
necessary, to highlight the appropriate manufacturer, then press the
button to display the correct code definition for your
ENTER
vehicle. A confirmation message shows on the LCD display.
- If the correct manufacturer is
and
shown, use the UP
buttons, as necessary,
DOWN
to highlight YES, then press the
button to continue.
ENTER
- If the correct manufacturer is not shown, Use UP
and
buttons, as necessary, to highlight NO, then press
DOWN
button to return to the list of vehicle
the ENTER
manufacturers.
If the manufacturer for your vehicle is not listed, use the UP
buttons, as necessary, to select Other
and DOWN
button for additional
manufacturer and press the ENTER
DTC information.
If the definition for the currently
displayed code is not available, an
advisory message shows on the
Scan Tool’s LCD display.
10. If more than one DTC was retrieved,
press and release the DTC/FF button,
as necessary.
„
Each time the DTC/FF button is pressed and released, the Scan
Tool will scroll and display the next DTC in sequence until all
DTCs in its memory have displayed.
„
Freeze Frame Data (if available) will display after DTC #1.
In OBD2 systems, when an
emissions-related engine malfunction
occurs that causes a DTC to set, a
record or snapshot of engine
conditions at the time that the
malfunction occurred is also saved in
the vehicle’s computer memory. The
record saved is called Freeze Frame
data. Saved engine conditions
include, but are not limited to: engine
speed, open or closed loop operation, fuel system commands,
coolant temperature, calculated load value, fuel pressure, vehicle
speed, air flow rate, and intake manifold pressure.
„
3160d
37
Using the Scan Tool
THE SYSTEM MENU
If more than one malfunction is present that causes more than
one DTC to be set, only the code with the highest priority will
contain Freeze Frame data. The code designated “01” on the
Scan Tool display is referred to as the PRIORITY code, and
Freeze Frame data always refers to this code. The priority
code is also the one that has commanded the MIL on.
Retrieved information can be uploaded to a Personal Computer
(PC) with the use of optional software (see instructions included
with the software for more information).
11. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„ See VIEWING OEM ENHANCED DTCs on page 40 to view OEM
enhanced DTCs, ABS DTCs, or SRS DTCs for your vehicle.
„
If you do not wish to view OEM enhanced, ABS or SRS DTCs,
press the M button to return to the Main Menu.
12. Determine engine system(s) condition by viewing the Scan Tool’s
display for any retrieved Diagnostic Trouble Codes, code definitions
and Freeze Frame data, interpreting the green, yellow and red LEDs.
„ If DTC’s were retrieved and you are going to perform the repairs
yourself, proceed by consulting the Vehicle’s Service Repair
Manual for testing instructions, testing procedures, and flow
charts related to retrieved code(s).
„
If you plan to take the vehicle to a professional to have it
serviced, complete the PRELIMINARY VEHICLE DIAGNOSTIC
WORKSHEET on page 28 and take it together with the retrieved
codes, freeze frame data and LED information to aid in the
troubleshooting procedure.
„
To prolong battery life, the Scan Tool automatically shuts “Off”
approximately three minutes after it is disconnected from the vehicle.
The DTCs retrieved, Monitor Status and Freeze Frame data (if any)
will remain in the Scan Tool’s memory, and may be viewed at any
time by turning the unit “On”. If the Scan Tool’s batteries are removed, or if the Tool is re-linked to a vehicle to retrieve codes/data,
any prior codes/data in its memory are automatically cleared.
THE SYSTEM MENU
The System Menu provides the ability to retrieve enhanced DTCs from most
Audi, BMW, Chrysler/Jeep, Ford/Mazda, GM/Isuzu, Honda/Acura, Hyundai,
Kia, Mercedes Benz, Toyota/Lexus and Volkswagen vehicles. The types of
enhanced data available depends on the vehicle make.
„
38
To view OEM enhanced DTCs (if
available), press the SYSTEM MENU
button; the System Menu displays.
and DOWN
buttons,
Use the UP
as necessary, to highlight the desired
option, then press the ENTER
button
to view the selected information, or,
press the M button to exit.
3160d
Using the Scan Tool
THE SYSTEM MENU
-
„
If no DTCs were retrieved, or only
generic DTCs were retrieved, and
OEM Enhanced DTCs, ABS DTCs
or SRS DTCs is selected, the Select
Manufacturer screen displays. Use
and DOWN
buttons,
the UP
as necessary, to highlight the
appropriate manufacturer, then press
the ENTER
button to view the
selected information.
If the manufacturer of the vehicle from which codes were
retrieved is not listed, use the UP
and DOWN
buttons,
as necessary, to highlight Exit on the Select Manufacturer
screen, then press the M button to return to the Main Menu.
OEM enhanced data is not available for your vehicle.
If a Manufacturer specific DTC was retrieved, and the manufacturer
selected for the code was Chrysler, Jeep, Ford, Mazda, General Motors,
Isuzu, Honda, Acura, Toyota or Lexus, the Select Data menu displays,
and DOWN
buttons, as necessary,
as appropriate. Use the UP
button to view
to highlight the desired option, the press the ENTER
the selected information, or, press the M button to return to the Main
Menu.
„
If the manufacturer selected was Audi,
BMW, Hyundai, Kia, Mercedes Benz or
Volkswagen, the Scan Tool retrieves enhanced DTCs from the vehicle’s computer.
„
If enhanced communication is not
supported by the vehicle under test, an
advisory message displays. Press the M
button to exit. OEM enhanced DTCs are
not available for your vehicle.
To view OEM Enhanced DTCs: Select
OEM Enhanced DTCs from the System
Menu (then choose the appropriate
manufacturer if prompted). Refer to
VIEWING OEM ENHANCED DTCs on page
40 to view enhanced DTCs for your vehicle.
To view ABS DTCs: Select ABS DTCs
from the System Menu (then choose the
appropriate manufacturer if prompted).
Refer to VIEWING ABS DTCs on page 50
to view ABS DTCs for your vehicle.
3160d
39
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
To view SRS DTCs: Select SRS DTCs
from the System Menu (then choose the
appropriate manufacturer if prompted).
Refer to VIEWING SRS DTCs on page 51
to view SRS DTCs for your vehicle.
VIEWING OEM ENHANCED DTCs
Refer to the appropriate paragraph to view enhanced data for your
vehicle:
„
„
„
„
„
„
Chrysler/Jeep.........................................
Ford/Mazda............................................
GM/Isuzu................................................
Honda/Acura ..........................................
Toyota/Lexus .........................................
Other Vehicle .........................................
page 40
page 41
page 44
page 45
page 47
page 49
Chrysler/Jeep Enhanced DTCs
When OEM Enhanced DTCs is chosen from the System Menu (and
Chrysler is selected when prompted), the Chrysler Enhanced menu
displays. You may view either “Engine DTCs” or “Transmission DTCs.”
1. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
button.
option, then press the ENTER
Transmission DTCs are not supported on most Chrysler/Jeep vehicles manufactured prior to 2002.
„
A “One moment please” message
displays while the Scan Tool
retrieves the selected DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Linking
Failed” message shows on the Scan
Tool’s display.
-
Verify the ignition is ON, then
press the POWER/LINK
button to continue.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
„
40
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
3160d
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
„
The Diagnostic Trouble Code (DTC)
and related code definition are
shown in the lower section of the
LCD display.
If the definition for the
currently displayed code is
not available, an advisory
message shows on the
Tool’s LCD display.
I/M MONITOR STATUS
icons are not displayed
when viewing enhanced
DTCs.
In the case of long code definitions, or when viewing
Freeze Frame data, a small arrow is shown in the
upper/lower right-hand corner of the code display area
to indicate the presence of additional information. Use
the UP
and DOWN
buttons, as necessary, to
view the additional information.
„
The Scan Tool will display a code only
if codes are present in the vehicle’s
computer memory. If no codes are
present, a “No Enhanced DTC’s are
presently stored in the vehicle’s
computer” is displayed. Press the M
button to return to the Main Menu.
3. If more than one code was retrieved press the DTC/FF button, as
necessary, to display additional codes one at a time.
„
Whenever the Scroll function is used to view additional codes,
the Scan Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
POWER/LINK
button again.
4. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„
To view additional enhanced DTCs, repeat steps 1 through 4, above.
„
To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
Ford/Mazda Enhanced DTCs
Mazda Enhanced DTCs are available for Mazda-branded
Ford vehicles only.
3160d
41
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
When OEM Enhanced DTCs is chosen from the System Menu (and
Ford is selected when prompted), the Ford Enhanced menu displays.
You may view DTCs for either the “Continuous Memory Test”, “KOEO
(Key On Engine Off) Test” or “KOER (Key On Engine Running) Test.”
1. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
button.
option, then press the ENTER
When choosing to view KOER
Test DTCs, start the vehicle’s
engine before making your
selection.
„
If the KOER Test was selected, and
the vehicle’s engine is not running,
an advisory message shows on the
Scan Tool’s display.
- Press the M button to return to the
Main Menu.
„
If the KOEO Test was selected, and
the vehicle’s engine is running, an
advisory message shows on the
Scan Tool’s display.
- Press the M button to return to the
Main Menu.
2. An “instructional” message shows on
the Scan Tool’s display. Perform test
procedures as appropriate.
„
If the Continuous Memory or KOEO
test was selected, turn the ignition
OFF, then back ON. Press the
button to start the test.
ENTER
- A “One moment please” message
displays while the test is in
progress.
„
If the KOER test was selected,
button to
press the ENTER
continue.
- Turn the steering wheel to the
right, then release.
- Press and release the brake
pedal.
- Cycle the overdrive switch (if
equipped).
- A “One moment please” message displays while the test is in
progress.
42
3160d
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
„
A “One moment please” message displays, while the Scan Tool
retrieves the selected DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Linking
Failed” message shows on the Scan
Tool’s Display.
- Verify the ignition is ON, then
press the POWER/LINK
button to continue.
3. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
„
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
„
The Diagnostic Trouble Code (DTC)
and related code definition are
shown in the lower section of the
LCD display.
If the definition for the
currently displayed code is
not available, an advisory
message shows on the
Scan Tool’s LCD display.
I/M MONITOR STATUS
icons are not displayed
when viewing enhanced
DTCs.
In the case of long code definitions, or when viewing
Freeze Frame data, a small arrow is shown in the
upper/lower right-hand corner of the code display area
to indicate the presence of additional information. Use
the
and
buttons, as necessary, to view the
additional information.
„
3160d
The Scan Tool will display a code
only if codes are present in the
vehicle’s computer memory. If no
codes are present, a “No Enhanced
DTC’s are presently stored in the
vehicle’s computer” is displayed.
Press the M button to return to the
Main Menu.
43
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
4. If more than one code was retrieved press the DTC/FF button, as
necessary, to display additional codes one at a time.
„
Whenever the Scroll function is used to view additional codes,
the Scan Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
button again.
POWER/LINK
5. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„
To view additional enhanced DTCs, repeat steps 1 through 5,
above.
„
To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
General Motors/Isuzu Enhanced DTCs
When OEM Enhanced DTCs is chosen from the System Menu (and
General Motors is selected when prompted), the GM Enhanced menu
displays. You may view the “MIL DTC”, “Current DTC”, “Fail Since Clear
DTC” or “History DTC.”
1. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
button.
option, then press the ENTER
„
A “One moment please” message
displays while the Tool retrieves the
selected DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Linking
Failed” message shows on the Scan
Tool’s display.
- Verify the ignition is ON, then
press the POWER/LINK
button to continue.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
44
„
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
„
The Diagnostic Trouble Code (DTC)
and related code definition are
shown in the lower section of the
LCD display.
3160d
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
If the definition for the currently displayed code is not
available, an advisory message shows on the Scan
Tool’s LCD display.
I/M MONITOR STATUS
icons are not displayed
when viewing enhanced
DTCs.
In the case of long code definitions, or when viewing
Freeze Frame data, a small arrow is shown in the upper/
lower right-hand corner of the code display area to
indicate the presence of additional information. Use the
and
buttons, as necessary, to view the additional
information.
„
The Scan Tool will display a code
only if codes are present in the
vehicle’s computer memory. If no
codes are present, a “No Enhanced
DTC’s are presently stored in the
vehicle’s computer” is displayed.
Press the M button to return to the
Main Menu.
3. If more than one code was retrieved press the DTC/FF button, as
necessary, to display additional codes one at a time.
„
Whenever the Scroll function is used to view additional codes,
the Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
button again.
POWER/LINK
4. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„ To view additional enhanced DTCs, repeat steps 1 through 4,
above.
„ To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
Honda/Acura Enhanced DTCs
When OEM Enhanced DTCs is chosen from
the System Menu (and Honda is selected
when prompted), the Honda Enhanced menu
displays. Depending on the protocol used to
communicate with your vehicle, the Honda
Enhanced menu provides options to view:
„
3160d
Confirmed DTCs or Pending DTCs
45
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
„
Permanent DTCs or Temporary DTCs
and DOWN
buttons,
1. Use the UP
as necessary, to highlight the desired
button.
option, then press the ENTER
„
A “One moment please” message
displays while the Tool retrieves the
selected DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Linking
Failed” message shows on the Scan
Tool’s display.
-
Verify the ignition is ON, then
press the POWER/LINK
button to continue.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
„
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
„
The Diagnostic Trouble Code (DTC)
and related code definition are
shown in the lower section of the
LCD display.
If the definition for the
currently displayed code is
not available, an advisory
message shows on the
Scan Tool’s LCD display.
I/M MONITOR STATUS
icons are not displayed
when viewing enhanced
DTCs.
In the case of long code definitions, or when viewing
Freeze Frame data, a small arrow is shown in the
upper/lower right-hand corner of the code display area
to indicate the presence of additional information. Use
the
and
buttons, as necessary, to view the
additional information.
46
3160d
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
„
The Scan Tool will display a code
only if codes are present in the
vehicle’s computer memory. If no
codes are present, a “No Enhanced
DTC’s are presently stored in the
vehicle’s computer” is displayed.
Press the M button to return to the
Main Menu.
3. If more than one code was retrieved press the DTC/FF button, as
necessary, to display additional codes one at a time.
„
Whenever the Scroll function is used to view additional codes,
the Scan Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
POWER/LINK
button again.
4. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„
To view additional enhanced DTCs, repeat steps 1 through 4, above.
„
To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
Toyota/Lexus Enhanced DTCs
When OEM Enhanced DTCs is chosen
from the System Menu (and Toyota is
selected when prompted), the Toyota
Enhanced menu displays. Depending on
the protocol used to communicate with your
vehicle, the Toyota Enhanced menu provides options to view:
„
Current DTCs, History DTCs or Pending
DTCs
„
Current DTCs, Historical
Readiness DTCs
DTCs
or
1. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
button.
option, then press the ENTER
„
A “One moment please” message
displays while the Scan Tool
retrieves the selected DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Linking
Failed” message shows on the Scan
Tool’s display.
- Verify the ignition is ON, then press the POWER/LINK
button to continue.
2. To read the display:
3160d
47
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
„
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
„
The Diagnostic Trouble Code (DTC)
and related code definition are shown
in the lower section of the LCD display.
If the definition for the
currently displayed code is
not available, an advisory
message shows on the
Scan Tool’s LCD display.
I/M MONITOR STATUS
icons are not displayed
when viewing enhanced
DTCs.
In the case of long code definitions, or when viewing
Freeze Frame data, a small arrow is shown in the
upper/lower right-hand corner of the code display area
to indicate the presence of additional information. Use
the
and
buttons, as necessary, to view the
additional information.
„
The Scan Tool will display a code only
if codes are present in the vehicle’s
computer memory. If no codes are
present, a “No Enhanced DTC’s are
presently stored in the vehicle’s
computer” is displayed. Press the M
button to return to the Main Menu.
3. If more than one code was retrieved
press the DTC/FF button, as necessary,
to display additional codes one at a time.
„
Whenever the Scroll function is used to view additional codes,
the Scan Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
button again.
POWER/LINK
4. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Tool returns to the “Priority” code.
48
„
To view additional enhanced DTCs, repeat steps 1 through 4,
above.
„
To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
3160d
Using the Scan Tool
VIEWING OEM ENHANCED DTCs
Enhanced DTCs for Other Vehicles
When OEM Enhanced DTCs is chosen from the System Menu (and
Audi, BMW, Hyundai, Kia, Mercedes, or Volkswagen is selected
when prompted, the Scan Tool retrieves enhanced DTCs from the
vehicle’s computer.
1. A “One moment please message
displays while the Scan Tool retrieves
enhanced DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Linking
Failed” message shows on the Scan
Tool’s display.
-
Verify the ignition is ON, then
press the POWER/LINK
button to continue.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
„
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
„
The Diagnostic Trouble Code (DTC)
and related code definition are
shown in the lower section of the
LCD display.
I/M MONITOR STATUS icons are not displayed when
viewing enhanced DTCs.
Freeze Frame data, a small arrow is shown in the
upper/lower right-hand corner of the code display area
to indicate the presence of additional information. Use
the
and
buttons, as necessary, to view the
additional information.
„
The Scan Tool will display a code only if codes are present in
the vehicle’s computer memory. If no codes are present, a “No
Enhanced DTC’s are presently stored in the vehicle’s computer”
is displayed. Press the M button to return to the Main Menu.
3. If more than one code was retrieved press the DTC/FF button, as
necessary, to display additional codes one at a time.
„
3160d
Whenever the Scroll function is used to view additional codes,
the Scan Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
POWER/LINK
button again.
49
Using the Scan Tool
VIEWING ABS DTCs
4. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„
To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
VIEWING ABS DTCs
Refer to Vehicle Applications - ABS on page 89 for Vehicle
Makes.
Reading ABS DTCs
1. When ABS DTCs is chosen from the
System Menu, a "One moment please"
message displays while the Scan Tool
retrieves the selected DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a "Linking
Failed" message shows on the Scan
Tool’s display.
-
Verify the ignition is ON, then
press the ENTER
button to continue.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
„ A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
„
„
„
50
A visible
icon indicates that the Scan Tool is linked to
(communicating with) the vehicle’s computer.
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
The Diagnostic Trouble Code (DTC)
and related code definition are
shown in the lower section of the
LCD display.
If the definition for the currently
displayed code is not available, an
advisory message shows on the
Scan Tool’s LCD display.
I/M MONITOR STATUS icons are
not displayed when viewing ABS
DTCs.
3160d
Using the Scan Tool
VIEWING SRS DTCs
In the case of long code definitions, a small arrow is shown in
the upper/lower right-hand corner of the code display area to
indicate the presence of additional information. Use the UP
buttons, as necessary, to view the additional
and DOWN
information.
„ The Scan Tool will display a code only
if codes are present in the vehicle’s
computer memory. If no codes are
present, a "No ABS DTC’s are
presently stored in the vehicle’s
computer" is displayed. Press the M
button to return to the Main Menu.
3. If more than one code was retrieved
press the DTC/FF button, as necessary,
to display additional codes one at a time.
„
Whenever the Scroll function is used to view additional codes,
the Scan Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
POWER/LINK
button again.
4. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„ To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
VIEWING SRS DTCs
Refer to Vehicle Applications - SRS on page 90 for Vehicle
Makes.
Reading SRS DTCs
1. When SRS DTCs is chosen from the
System Menu, a "One moment please"
message displays while the Scan Tool
retrieves the selected DTCs.
„
If the Scan Tool fails to link to the
vehicle’s computer, a "Linking
Failed" message shows on the Scan
Tool’s display.
-
Verify the ignition is ON, then press the ENTER
continue.
button to
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 9 for a description of
LCD display elements.
„
3160d
A visible
icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
51
Using the Scan Tool
VIEWING SRS DTCs
„
A visible
icon indicates that the Scan Tool is linked to
(communicating with) the vehicle’s computer.
„
The upper right hand corner of the
display shows the number of the
code currently being displayed, the
total number of codes retrieved.
„
The Diagnostic Trouble Code (DTC)
and related code definition are
shown in the lower section of the
LCD display.
If the definition for the currently
displayed code is not available, an
advisory message shows on the
Scan Tool’s LCD display.
I/M MONITOR STATUS icons are
not displayed when viewing SRS
DTCs.
In the case of long code definitions, a small arrow is shown in
the upper/lower right-hand corner of the code display area to
indicate the presence of additional information. Use the UP
buttons, as necessary, to view the additional
and DOWN
information.
„
The Scan Tool will display a code only
if codes are present in the vehicle’s
computer memory. If no codes are
present, a "No SRS DTC’s are presently stored in the vehicle’s computer"
is displayed. Press the M button to
return to the Main Menu.
3. If more than one code was retrieved
press the DTC/FF button, as necessary,
to display additional codes one at a time.
„
Whenever the Scroll function is used to view additional codes,
the Scan Tool’s communication link with the vehicle’s computer
disconnects. To re-establish communication, press the
POWER/LINK
button again.
4. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the Scan Tool returns to the “Priority” code.
„
52
To exit the enhanced mode, press the M button. The Tool returns
to the Main Menu.
3160d
Using the Scan Tool
ERASING DIAGNOSTIC TROUBLE CODES (DTCs)
ERASING DIAGNOSTIC TROUBLE CODES (DTCs)
When the Scan Tool’s ERASE function is used to erase
DTCs from the vehicle's on-board computer, "Freeze
Frame" data and manufacturer-specific-enhanced data are
also erased. "Permanent" DTCs ARE NOT erased by the
ERASE function.
If you plan to take the vehicle to a Service Center for repair, DO NOT
erase the codes from the vehicle's computer. If the codes are erased,
valuable information that might help the technician troubleshoot the
problem will also be erased.
Erase DTCs from the computer's memory as follows:
When DTCs are erased from the vehicle's computer memory, the
I/M Readiness Monitor Status program resets the status of all
Monitors to a not run "flashing" condition. To set all of the Monitors
to a DONE status, an OBD2 Drive Cycle must be performed.
Refer to your vehicle's service manual for information on how to
perform an OBD2 Drive Cycle for the vehicle under test.
1. If not connected already, connect the
Tool to the vehicle's DLC, and turn the
ignition "On.” (If the Tool is already
connected and linked to the vehicle's
computer, proceed directly to step 3. If
not, continue to step 2.)
2. Perform the Code Retrieval procedure
as described on page 33.
„
To erase OBD2 DTCs: Wait until
the codes are displayed on the
Tool’s LCD and then proceed to
step 3.
„
To erase OEM enhanced, ABS or SRS DTCs: Press the
button to display the System Menu.
SYSTEM MENU
Perform the appropriate Code Retrieval (see page 40 for more
information) and then proceed to step 3.
3. Press and release the ERASE
button. A confirmation message shows
on the LCD display.
„
If you are sure you want to proceed,
and DOWN
use the UP
buttons, as necessary, to highlight
YES, then press the ENTER
button.
-
3160d
If you do not want to proceed, use the UP
and DOWN
buttons, as necessary, to highlight NO, then press the
button.
ENTER
53
Using the Scan Tool
I/M READINESS TESTING
4. If you chose to erase DTCs, a progress
screen displays while the erase function
is in progress.
„
If the erase was successful, a
confirmation message shows on the
display. Press the POWER/LINK
button to re-link the Scan
Tool to the vehicle.
„
If the erase was not successful, an
advisory message shows on the
display. Verify that the Tool is
properly connected to the vehicle’s
DLC and that the ignition is on, then
repeat steps 2 and 3, above.
I/M READINESS TESTING
I/M is an Inspection and Maintenance program legislated by the
Government to meet federal clean-air standards.
The program requires that a vehicle be taken periodically to an
Emissions Station for an "Emissions Test" or "Smog Check,” where the
emissions-related components and systems are inspected and tested
for proper operation. Emissions Tests are generally performed once a
year, or once every two years.
On OBD2 systems, the I/M program is enhanced by requiring vehicles
to meet stricter test standards. One of the tests instituted by the Federal
Government is called I/M 240. On I/M 240, the vehicle under test is
driven under different speeds and load conditions on a dynamometer for
240 seconds, while the vehicle's emissions are measured.
Emissions tests vary depending on the geographic or regional
area in which the vehicle is registered. If the vehicle is
registered in a highly urbanized area, the I/M 240 is probably
the type of test required. If the vehicle is registered in a rural
area, the stricter “dynamometer type” test may not be required.
I/M Readiness Monitors
I/M Readiness shows whether the various emissions-related systems on
the vehicle are operating properly and are ready for Inspection and
Maintenance testing.
State and Federal Governments enacted Regulations, Procedures and
Emission Standards to ensure that all emissions-related components
and systems are continuously or periodically monitored, tested and
diagnosed whenever the vehicle is in operation. It also requires vehicle
manufacturers to automatically detect and report any problems or faults
that may increase the vehicle's emissions to an unacceptable level.
The vehicle's emissions control system consists of several components
or sub-systems (Oxygen Sensor, Catalytic Converter, EGR, Fuel
System, etc.) that aid in reducing vehicle emissions.
54
3160d
Using the Scan Tool
I/M READINESS TESTING
To have an efficient Vehicle Emission Control System, all the emissionsrelated components and systems must work correctly whenever the
vehicle is in operation.
To comply with State and Federal Government regulations, vehicle
manufacturers designed a series of special computer programs called
"Monitors" that are programmed into the vehicle's computer. Each of
these Monitors is specifically designed to run tests and diagnostics on a
specific emissions-related component or system (Oxygen Sensor,
Catalytic Converter, EGR Valve, Fuel System, etc.) to ensure their
proper operation. Currently, there are a maximum of fifteen Monitors
available for use.
Each Monitor has a specific function to test and diagnose only
its designated emissions-related component or system. The
names of the Monitors (Oxygen Sensor Monitor, Catalyst
Monitor, EGR Monitor, Misfire Monitor, etc.) describe which
component or system each Monitor is designed to test and
diagnose.
Emissions Inspection and Maintenance (I/M) Readiness
Monitor Status Information
I/M Readiness Monitor Status shows which of the vehicle's Monitors
have run and completed their diagnosis and testing, and which ones
have not yet run and completed testing and diagnosis of their
designated sections of the vehicle's emissions system.
„
If a Monitor was able to meet all the conditions required to enable it
to perform the self-diagnosis and testing of its assigned engine
system, it means the monitor "HAS RUN.”
„
If a Monitor has not yet met all the conditions required for it to
perform the self-diagnosis and testing of its assigned engine system;
it means the Monitor "HAS NOT RUN.”
The Monitor Run/Not Run status does not show whether
or not a problem exists in a system. Monitor status only
indicates whether a particular Monitor has or has not run
and performed the self-diagnosis and testing of its
associated system.
Performing I/M Readiness Quick Check
When a vehicle first comes from the factory, all Monitors
indicate a “HAVE RUN” status. This indicates that all Monitors
have run and completed their diagnostic testing. The “HAVE
RUN” status remains in the computer's memory, unless the
Diagnostic Trouble Codes are erased or the vehicle's
computer memory is cleared.
3160d
55
Using the Scan Tool
I/M READINESS TESTING
The Scan Tool allows you to retrieve Monitor/System Status Information
to help you determine if the vehicle is ready for an Emissions Test
(Smog Check). In addition to retrieving Diagnostic Trouble Codes, the
Tool also retrieves Monitor Run/Not Run status. This information is very
important since different areas of the state/country have different
emissions laws and regulations concerning Monitor Run/Not Run status.
Before an Emissions Test (Smog Check) can be performed, your
vehicle must meet certain rules, requirements and procedures legislated
by the Federal and state (country) governments where you live.
1. In most areas, one of the requirements that must be met before a
vehicle is allowed to be Emissions Tested (Smog Checked) is that
the vehicle does not have any Diagnostic Trouble Codes present
(with the exception of PENDING Diagnostic Trouble Codes).
2. In addition to the requirement that no Diagnostic Trouble Codes be
present, some areas also require that all the Monitors that a
particular vehicle supports indicate a "Has Run" status condition
before an Emissions Check may be performed.
3. Other areas may only require that some (but not all) Monitors
indicate a "Has Run" status before an Emissions Test (Smog Check)
may be performed.
Monitors with a "Has Run" status indicate that all the
required conditions they needed to perform diagnosis and
testing of their assigned engine area (system) have been
met, and all diagnostic testing has completed successfully.
Monitors with a "Has Not Run" status have not yet met the
conditions they need to perform diagnosis and testing of
their assigned engine area (system), and have not been
able to perform diagnostic testing on that system.
The green, yellow and red LEDs provide a quick way to help you
determine if a vehicle is ready for an Emissions Test (Smog Check).
Follow the instructions below to perform the Quick Check.
Perform the CODE RETRIEVAL PROCEDURE as described on page
33, then interpret the LED indications as follows:
Interpreting I/M Readiness Test Results
1. GREEN LED - Indicates that all engine
systems are "OK" and operating
normally (all Monitors supported by the
vehicle have run and performed their
self-diagnostic testing). The vehicle is
ready for an Emissions Test (Smog
Check), and there is a good possibility
that it can be certified.
2. YELLOW LED - Determine from the
CODE
RETRIEVAL
PROCEDURE
(page 33) which of the two possible conditions is causing the yellow
LED to light.
56
3160d
Using the Scan Tool
I/M READINESS TESTING
„
If a "PENDING" Diagnostic Trouble
Code is causing the yellow LED to
light, it is possible that the vehicle
will be allowed to be tested for
emissions and certified. Currently,
most areas (states / countries) will
allow an Emissions Test (Smog
Check) to be performed if the only
code in the vehicle's computer is a
"PENDING" Diagnostic Trouble
Code.
„
If the illumination of the Yellow LED
is being caused by monitors that
“have not run” their diagnostic
testing, then the issue of the vehicle
being ready for an Emissions Test
(Smog Check) depends on the
emissions regulations and laws of
your local area.
- Some areas require that all
Monitors indicate a "Has Run"
status before they allow an
Emissions Test (Smog Check) to be performed. Other areas
only require that some, but not all, Monitors have run their
self-diagnostic testing before an Emissions Test (Smog
Check) may be performed.
- From the code retrieval procedure, determine the status of
each Monitor (a solid Monitor icon shows Monitor "Has Run"
status, a flashing Monitor icon indicates "Has Not Run" status).
Take this information to an emissions professional to
determine (based on your test results) if your vehicle is ready
for an Emissions Test (Smog Check).
3. RED LED - Indicates there is a problem
with one or more of the vehicle's
systems. A vehicle displaying a red LED
is definitely not ready for an Emissions
Test (Smog Check). The red LED is
also an indication that there are
Diagnostic Trouble Code(s) present
(displayed on the Tool's screen). The
Malfunction Indicator (Check Engine)
Lamp on the vehicle's instrument panel
will light steady. The problem that is
causing the red LED to light must be
repaired before an Emissions Test (Smog Check) can be performed.
It is also suggested that the vehicle be inspected/repaired before
driving the vehicle further.
If the Red LED was obtained, there is a definite problem present in
the system(s). In these cases, you have the following options.
„
3160d
Repair the vehicle yourself. If you are going to perform the
repairs yourself, proceed by reading the vehicle service manual
and following all its procedures and recommendations.
57
Using the Scan Tool
I/M READINESS TESTING
„
Take the vehicle to a professional to have it serviced. The
problem(s) causing the red LED to light must be repaired before
the vehicle is ready for an Emissions Test (Smog Check).
Using the I/M Readiness Monitor Status to Confirm a Repair
The I/M Readiness Monitor Status function can be used (after repair of a
fault has been performed) to confirm that the repair has been performed
correctly, and/or to check for Monitor Run Status. Use the following
procedure to determine I/M Readiness Monitor Status:
1. Using retrieved Diagnostic Trouble Codes (DTCs) and code
definitions as a guide, and following manufacturer's repair
procedures, repair the fault or faults as instructed.
2. After the fault or faults have been repaired, connect the Tool to the
vehicle's DLC and erase the code or codes from the vehicle's
computer memory.
„
See page 49 for procedures for ERASING DIAGNOSTIC
TROUBLE CODES (DTCs) from the vehicle's on-board
computer.
„
Write the codes down on a piece of paper for reference before
erasing.
3. After the erase procedure is performed, most of the Monitor icons on
the Tool’s display will be flashing. Leave the Tool connected to the
vehicle, and perform a Trip Drive Cycle for each "flashing" Monitor:
Misfire, Fuel and Comprehensive Component Monitors run
continuously and their icons will always be on solid, even after
the erase function is performed.
„
Each DTC is associated with a specific Monitor. Consult the
vehicle's service manual to identify the Monitor (or Monitors)
associated with the faults that were repaired. Follow the
manufacturer's procedures to perform a Trip Drive Cycle for the
appropriate Monitors.
„
While observing the Monitor icons on the Tool’s display, perform
a Trip Drive Cycle for the appropriate Monitor or Monitors.
If the vehicle needs to be driven in order to perform a Trip
Drive Cycle, ALWAYS have a second person help you.
One person should drive the vehicle while the other
person observes the Monitor icons on the Tool for Monitor
RUN status. Trying to drive and observe the Tool at the
same time is dangerous, and could cause a serious traffic
accident.
4. When a Monitor's Trip Drive Cycle is performed properly, the
Monitor icon on the Tool’s display changes from "flashing" to "solid,”
indicating that the Monitor has run and finished its diagnostic testing.
„
58
If, after the Monitor has run, the MIL on the vehicle's dash is not lit, and
no stored or pending codes associated with that particular Monitor are
present in the vehicle's computer, the repair was successful.
3160d
Using the Scan Tool
ABOUT REPAIRSOLUTIONS®
„
If, after the Monitor has run, the MIL on the vehicle's dash lights
and/or a DTC associated with that Monitor is present in the
vehicle's computer, the repair was unsuccessful. Refer to the
vehicle's service manual and recheck repair procedures.
ABOUT REPAIRSOLUTIONS®
RepairSolutions® is a web-based service created to assist professional
technicians in quickly and accurately diagnosing and repairing today’s
vehicles. RepairSolutions® allows you to view, save, and email the
diagnostic data retrieved from a vehicle’s on-board computer(s) using
an Innova Tool. RepairSolutions® also provides access to an extensive
knowledge database including:
„
Verified Fixes – Find the most likely fixes reported and verified by
ASE Technicians for the retrieved DTCs.
„
Step-By-Step Repair Instructions – View available repair
instructions to properly perform the fix.
„
How-To-Repair Videos – Watch repair video tutorials for valuable
repair tips.
„
Technical Service Bulletins – Research known problems reported
by vehicle manufacturers.
„
Safety Recalls – Research known safety concerns applicable to a
vehicle.
And much more. Please visit www.innova.com for additional information.
Hardware Requirements:
„
Innova Tool
„
Mini USB Cable (included with tool)
Minimum System Operating Requirements:
„
Windows® PC System
„
Windows® XP, Windows® Vista, or Windows® 7
„
128 MD Ram
„
Pentium III Processor
„
One available USB port
„
Internet Connection
„
Internet Explorer 5.5, Netscape 7.0 or Firefox 1.0 browser
Accessing RepairSolutions®
1. Link your Scan Tool to a vehicle and retrieve diagnostic data.
3160d
59
Using the Scan Tool
ABOUT REPAIRSOLUTIONS®
2. Visit www.innova.com, download and install the latest RepairSolutions®
software for your Scan Tool. Select the Support tab, then choose
Troubleshoot/Download.
3. Connect the Scan Tool to your PC using a Mini USB cable (cable
included).
„
Your default web browser launches automatically and connects
to the www.innova.com website.
4. Login to your RepairSolutions® account using your registered Email
Address and Password.
If you not yet established an account, you must register for
a FREE RepairSolutions® account before proceeding.
60
3160d
Live Data Mode
VIEWING LIVE DATA
The Scan Tool is a special diagnostic tool that communicates with the
vehicle's computer. The Scan Tool lets you view and/or "capture"
(record) "real-time" Live Data. This information includes values (volts,
rpm, temperature, speed etc.) and system status information (open loop,
closed loop, fuel system status, etc.) generated by the various vehicle
sensors, switches and actuators.
In effect the Scan Tool lets you view, in "real time", the same signal
values generated by the sensors, actuators, switches and/or vehicle
system status information used by the vehicle's computer when
calculating and conducting system adjustments and corrections.
The real time (Live Data) vehicle operating information (values/status)
that the computer supplies to the Scan Tool for each sensor, actuator,
switch, etc. is called Parameter Identification (PID) Data.
Each PID (sensor, actuator switch, status, etc.) has a set of operating
characteristics and features (parameters) that serve to identify it. The
Scan Tool displays this information for each sensor, actuator, switch or
status that is supported by the vehicle under test.
WARNING: If the vehicle must be driven in order to perform a
troubleshooting procedure, ALWAYS have a second person
help you. One person should drive the vehicle while the other
person observes the Scan Tool data. Trying to drive and
operate the Scan Tool at the same time is dangerous, and
could cause a serious traffic accident.
VIEWING LIVE DATA
1. While linked to the vehicle, start the
engine, then press and release the LD
button.
2. Real-time Live Data (PID) information
supported by the vehicle under test
displays.
„
If Live Data is not supported by the
vehicle under test, an advisory
message displays. Press the M
button to exit. Live Data is not
available for your vehicle.
Remember, what you are viewing
is "real-time" Live Data. The
values (volts, rpm, temperature,
vehicle speed, system status etc)
for the various PIDS displayed
may change as the vehicle's
operating conditions change.
3. A vehicle usually supports several PIDs, however, only a limited
amount of PID data can be displayed on the screen at one time. If
additional PID data is available, a small arrow will be shown on the
display. Use the UP
and DOWN
buttons, as necessary, to
scroll up or down to view all available PID data.
3160d
61
Live Data Mode
CUSTOMIZING LIVE DATA (PIDs)
„
If communication with the vehicle is
lost while viewing Live Data, a
Communication Lost" message
shows on the Scan Tool's display.
4. Press and release the ENTER
button
to view the currently selected PID in
“graph” mode. Press and release the
button again to return to the
ENTER
PID list.
5. Press and hold the ENTER
button to
view the “expanded” definition for the
currently selected PID. Press and release
button again to return to
the ENTER
the PID list.
6. If you experience vehicle problems,
view and/or compare the Live Data (PID)
information displayed on the Scan Tool
to specifications in the vehicle's repair
manual.
If desired, you can "customize" the
Live Data display to show only those
PIDs you are interested in viewing.
See Customizing Live Data (PIDs)
below for details. You may also choose to "capture" (record) Live
Data for later viewing. See RECORDING (CAPTURING) LIVE
DATA on page 63 for details.
CUSTOMIZING LIVE DATA (PIDs)
This feature lets you customize the Scan Tool display to show only
those PIDs that are of interest at the current time. You can customize
the Live Data display by placing the Scan Tool in "Custom Live Data"
mode and selecting only the PIDs that you wish to display. To customize
the Live Data display, proceed as follows:
1. While linked to the vehicle, start the
engine, then press and release the M
button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Live Data
button.
Menu, then press the ENTER
„
The “Live Data” menu displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight Custom Live
button.
Data, then press the ENTER
62
3160d
Live Data Mode
RECORDING (CAPTURING) LIVE DATA
„
The "Custom Live Data" menu
displays, with the first PID in the
menu highlighted.
„
If Live Data is not supported by the
vehicle under test, an advisory
message displays. Press the M
button to exit. Live Data is not
available for your vehicle.
4. Use the UP
and DOWN
buttons
to scroll through the available PIDs.
When the PID you wish to display is
button
highlighted, press the ENTER
to select it (a "checkmark" will show in
the checkbox to the right of the PID to
confirm your selection). Repeat the
procedure until only the PIDs you want
to display have all been selected.
„
To deselect a currently selected PID, highlight the PID, then
button. The checkmark will be removed
press the ENTER
from the checkbox.
5. When you are finished making your
selection(s), press the LD button to
save your Custom Live Data PIDs.
„
If no PIDs have been selected, an
advisory message displays. Press
the M button to return to the Custom
Live Data menu.
„
The Scan Tool is now in "Custom Live Data" mode. Only the
PIDs you selected are shown on the Scan Tools display.
6. To exit the "Custom Live Data" mode, press the M button to return
to the Live Data Menu.
RECORDING (CAPTURING) LIVE DATA
You can record and save several frames of Live Data information for
each PID supported by the vehicle in the Scan Tool's memory.
Recorded Live Data can serve as valuable information to help you in the
troubleshooting of vehicle problems.
There are two ways that the Scan Tool can "record" Live Data:
„
Record by DTC Trigger
„
Record by Manual Trigger
button is pressed at any time while
If the POWER/LINK
in Live Data mode, any stored (recorded) Live Data will be
cleared (erased) from the Scan Tool’s memory.
3160d
63
Live Data Mode
RECORDING (CAPTURING) LIVE DATA
Record by DTC Trigger
This function automatically records (captures) Live Data information
when a DTC sets and saves it in the Scan Tool’s memory. The recorded
(captured) data can be a valuable troubleshooting aid, particularly if you
are experiencing a fault that is causing a DTC to set.
1. While linked to the vehicle, start the
engine, then press and release the M
button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Live Data
Menu, then press the ENTER
button.
„
The “Live Data” menu displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight Record Live
button.
Data, then press the ENTER
„
The "Record Live Data Menu" displays.
4. Use the UP
and DOWN
buttons,
as necessary, to highlight Record by
DTC trigger, then press the ENTER
button.
„
If DTCs are presently stored in the
vehicle’s computer, an advisory
message displays. Use the UP
buttons, as
and DOWN
necessary, to highlight Erase DTCs,
button to
then press the ENTER
erase DTCs from the vehicle’s
computer. When the Erase process
is complete, the “Record by DTC
Trigger” screen displays.
„
If the erase was not successful, an
advisory message shows on the
display. Press the M button to return
to the Erase DTCs screen. Verify
that the Scan Tool is properly
connected to the vehicle’s DLC and
that the ignition is on, then repeat
the erase procedure.
5. When the "Record by DTC Trigger" screen displays, select the
desired trigger point as follows:
64
3160d
Live Data Mode
RECORDING (CAPTURING) LIVE DATA
The Scan Tool is capable of recording approximately 100
frames of Live Data. Record by DTC trigger lets you select the
point in time at which you wish the Scan Tool to begin
recording Live Data. You can set the trigger point to record the
100 frames of data before an event (when the DTC sets), after
the event, or in the middle (50 frames before and 50 frames
after the event.
„
„
„
Beginning - records approximately
100 frames of Live Data after the
DTC sets.
Middle - records approximately 50
frames of Live Data before and 50
frames after the DTC sets.
End - records approximately 100
frames of Live Data before the DTC
sets.
6. Use the UP
and DOWN
buttons,
as necessary, to select the desired trigger
button.
point, then press the ENTER
„ A "One moment please. . ." message
shows on the display. When the Scan
Tool is ready to record Live Data, the
"Record Live Data" screen displays.
7. Put the engine in the operating condition
that causes the DTC to set.
„ If necessary, drive the vehicle until you reach the vehicle speed
at which the problem occurs.
8. When the Scan Tool detects a fault that
causes a DTC to set, it automatically
records and saves approximately 20
frames of Live Data information in its
memory (according to your trigger
selection) for each PID supported by the
vehicle.
„ All three LEDs will blink for three
seconds to indicate that Live Data is
being recorded, and a "One moment
please..." message shows on the
display, along with the number of
the frame being recorded.
„ When recording is complete, a
confirmation screen displays, asking
if you would like to view the
and
recorded data. Use the UP
buttons, as necessary, to
DOWN
button.
select Yes or No, as desired, then press the ENTER
3160d
65
Live Data Mode
RECORDING (CAPTURING) LIVE DATA
„
If recording was not successful, an
advisory message shows on the
display. Press the M button to return
to the Record Live Data menu.
If Yes is selected, the Scan Tool
enters "Playback" mode from
which you can view a frame-byframe playback of recorded Live
Data (see LIVE DATA PLAYBACK
on page 68 for details). If No is selected, the display returns to
the "Mode Selection Menu".
9. You can exit the "Record Live Data Mode" at any time by pressing
the M button until the Main Menu displays.
If desired, you can transfer the recorded Live Data information
to a personal computer with the use of optional software (see
instructions included with the software for more information).
Record by Manual Trigger
This option lets you select the precise time at which the Live Data recording
will occur. Record by Manual Trigger can be a very valuable diagnostic tool
when troubleshooting intermittent problems that do not meet the requirements for a DTC to set. Even though a DTC is not present, the intermittent
problems will sometimes manifest themselves briefly, for a few fractions of a
second and/or only at certain vehicle speeds or vehicle operating conditions.
1. While linked to the vehicle, start the
engine, then press and release the M
button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Live Data
button.
Menu, then press the ENTER
„
The “Live Data” menu displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight Record Live
button.
Data, then press the ENTER
„
The "Record Live Data Menu" displays.
4. Use the UP
and DOWN
buttons,
as necessary, to highlight Record by
manual trigger, then press the ENTER
button.
5. When the "Record by Manual Trigger"
screen displays, select the desired
trigger point as follows:
66
3160d
Live Data Mode
RECORDING (CAPTURING) LIVE DATA
The Scan Tool is capable of recording approximately 100
frames of Live Data. Record by DTC trigger lets you select the
point in time at which you wish the Scan Tool to begin
recording Live Data. You can set the trigger point to record the
100 frames of data before an event (when the DTC was set),
after the event, or in the middle (50 frames before and 50
frames after the event.
„
Beginning - records approximately
100 frames of Live Data after the
button was pressed.
ENTER
„
Middle - records approximately 50
frames of Live Data before and 50
button
frames after the ENTER
was pressed.
„
End - records approximately 100
frames of Live Data before the
button was pressed.
ENTER
6. Use the UP
and DOWN
buttons,
as necessary, to select the desired trigger
button.
point, then press the ENTER
„ A "One moment please. . ."
message shows on the display.
When the Scan Tool is ready to
record Live Data, the "Record Live
Data" screen displays.
7. Put the engine in the operating condition
where the problem manifests itself.
„ If necessary, drive the vehicle until you reach the vehicle speed
at which the problem occurs.
8. When the problem occurs, press and
release the LD button.
„ All three LEDs will blink for three
seconds to indicate that Live Data is
being recorded, and a "One moment
please. . ." message shows on the
display, along with the number of
the frame being recorded.
„
3160d
When recording is complete, a
confirmation screen displays, asking
if you would like to view the
and
recorded data. Use the UP
buttons, as necessary, to
DOWN
select Yes or No, as desired, then
button.
press the ENTER
67
Live Data Mode
LIVE DATA PLAYBACK
„
If recording was not successful, an
advisory message shows on the
display. Press the M button to return
to the Record Live Data menu.
If Yes is selected, the Scan Tool
enters "Playback" mode from which
you can view a frame-by-frame
playback of recorded Live Data (see
LIVE DATA PLAYBACK on page
68 for details). If No is selected, the display returns to the "Mode
Selection Menu".
9. You can exit the "Record Live Data Mode" at any time by pressing
and holding the M button until the "Test Modes" menu displays.
If desired, you can transfer the recorded Live Data information
to a personal computer with the use of optional software (see
instructions included with the software for more information).
Important Information
1. When Live Data capture is initiated, the green, yellow and red LEDs
on the Scan Tool will flash three times to indicate that Live Data is
being saved to the Scan Tool's memory.
2. When you are LINKED to a vehicle and you are in the “Live Data
View mode”, you can toggle between “Live Data View” mode and
“DTC view” mode by alternately pressing and releasing the DTC/FF
or the M buttons. The Scan Tool will stay linked to the vehicle’s
computer during this process. However, if the DTC/FF button is
pressed twice the DTC screen will be advanced to the next DTC
screen and the Scan Tool will be taken out of link.
LIVE DATA PLAYBACK
Once Live Data has been recorded, it is saved in the Scan Tool's
memory. You can view recorded Live Data immediately after recording
by selecting Yes from the Record Live Data confirmation screen (see
RECORDING (CAPTURING) LIVE DATA on page 63 for more
information), or you can view it later using the "Playback" function.
1. With the Scan Tool not connected to a
vehicle, press the POWER/LINK
button.
„
The "To Link" screen shows on the
Scan Tool's display.
2. Press and release the M button.
„
The Main Menu displays.
and DOWN
buttons, as necessary, to highlight
3. Use the UP
button.
Live Data Menu, then press the ENTER
68
3160d
Live Data Mode
LIVE DATA PLAYBACK
„
The “Live Data” menu displays.
and DOWN
buttons,
4. Use the UP
as necessary, to highlight Playback
Live Data, then press the ENTER
button to place the Scan Tool in “Live
Data Playback” mode.
„
The display shows the recorded Live
Data, beginning with the “trigger”
frame.
When you select Yes from the
Record Live Data confirmation
screen, the Scan Tool enters the
"Live Data Playback" mode, and
the display shows the recorded
Live Data, beginning with the
"trigger" frame.
„
A vehicle usually supports several PIDs, however, only a limited
amount of PID data can be displayed on the screen at one time.
If additional PID data is available, a small arrow will be shown on
and DOWN
buttons, as
the display. Use the UP
necessary, to scroll up or down to view all available PID data.
„
When viewing recorded Live Data, look for any irregularities in any
of the PID values/signal information (LTFT %, RPM, MAP, TEMP,
etc.). If any PIDs are not within specification, or irregularities are
detected, follow the procedures in the vehicle's service repair
manual to perform additional troubleshooting and repair.
When recorded Live Data is played
back, all available PIDs are shown,
even if you have customized the
Live Data selections.
If there is no Live Data currently
stored in the Scan Tool's memory,
an advisory message shows on the
display. Press the M button to exit
the "Live Data Playback" mode.
5. When you have viewed all PID information for the current frame of
Live Data, use the DOWN
button to scroll to the end of the PID
list. Highlight Next Frame or Previous Frame, as desired, then
button.
press the ENTER
6. When you have finished viewing the recorded Live Data, exit the “Live
Data Playback” mode using the appropriate procedure shown below:
3160d
„
If the Scan Tool is connected to a vehicle, use the DOWN
button to scroll to the end of the PID list, highlight Exit Playback,
button.
then press the ENTER
„
If the Scan Tool is not connected to a vehicle, press the DTC/FF
button.
69
Additional Tests
SPECIAL TEST MENU
In addition to retrieving Diagnostic Trouble Codes (DTCs), you can use the
Scan Tool to perform additional diagnostic tests, to view diagnostic and
vehicle information stored in your vehicle's on-board computer, and to
configure the Tool for your particular needs.
SPECIAL TEST MENU
Additional tests are accessed through the “Special Test Menu.” The
following functions are available from the "Special Test Menu:"
„
O2 Sensor Test - Retrieves and displays O2 sensor monitor test
results from your vehicle's on-board computer.
„
Non-Continuous Test - Retrieves and displays test results for
emission-related powertrain components and systems that are not
continuously monitored.
„
EVAP Leak Test - Performs a leak test for the vehicle's EVAP
system.
1. While linked to the vehicle, press and
release the M button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Special Test,
button.
then press the ENTER
„
The Special Test menu displays.
O2 Sensor Test
OBD2 regulations require that applicable vehicles monitor and test operation
of the oxygen (O2) sensors to identify problems that can affect fuel
efficiency and vehicle emissions. These tests are performed automatically
when engine operating conditions are within predefined limits. Results of
these tests are stored in the on-board computer's memory.
The O2 Sensor Test function lets you retrieve and view O2 sensor
monitor test results for the most recently completed tests from your
vehicle's on-board computer.
Vehicles are equipped with multiple O2 sensors. O2 sensors are
installed both upstream of (before) and downstream of (after) the
exhaust system Catalytic Converters. The name of an O2 sensor
identifies its location in the exhaust system. The name of each O2
sensor is made up of three parts:
O2S XX YY -or- O2S X Y
70
„
O2S - this is the basic designation for all O2 sensors.
„
X or XX - These characters identify the location of the O2 sensor in
relation to a cylinder bank. An O2 sensor for cylinder bank 1 is
identified by the designation “1” or "B1"; a sensor for cylinder bank 2
is identified as “2” or "B2."
3160d
Additional Tests
SPECIAL TEST MENU
”Bank One” indicates the side of the engine where cylinder
number one is located (V-type engines). Bank Two is opposite
of Bank One.
„
Y or YY - These characters identity the location of the O2 sensor in
relation to the exhaust system catalyst. An O2 sensor located upstream
of the catalyst is identified by the designation”1” or "S1", a sensor located downstream of the Catalytic Converter is identified as “2” or "S2."
For example, O2S12 or O2SB1S2 is the designation for the
downstream O2 sensor for cylinder bank 1.
The Scan Tool does not perform O2 sensor tests, but retrieves
results from the most recently performed O2 sensor tests from
the on-board computer's memory. You may retrieve O2 sensor
test results for only one test of one sensor at any given time.
1. From the "Special Test Menu", use the
UP
and DOWN
buttons, as
necessary, to highlight O2 Sensor Test,
button.
then press the ENTER
2. A "One moment please..." message
displays while the request is sent to the
vehicle's on-board computer.
„
The
"Select
Sensor"
screen
displays. The screen shows all O2
sensors applicable to the vehicle
under test.
If O2 sensor tests are not
supported by the vehicle under
test, an advisory message shows
on the Scan Tool's display. Press
the M button to return to the
“Special Test Menu.”
3. Use the UP
and DOWN
buttons,
as necessary, to highlight the O2 sensor
for which you wish to view test results,
button.
then press the ENTER
4. When test results have been retrieved,
data for the selected sensor test will
show on the Scan Tool's display.
5. When you have finished viewing the
retrieved test data, press the M button
to return to the "Select sensor" screen.
6. Repeat steps 3 through 5 to view test
results for additional sensors. When you have finished viewing the
retrieved test data, press the M button to return to the “Special Test
Menu” screen.
3160d
71
Additional Tests
SPECIAL TEST MENU
Non-Continuous Test
The Non-Continuous Test function retrieves and displays test results
for emission-related powertrain components and systems that are not
continuously monitored. The tests available are determined by the
vehicle manufacturer.
The Scan Tool does not perform non-continuous test, but
retrieves results from the most recently performed tests from
the on-board computer’s memory. You may retrieve noncontinuous test results for only one test at any given time.
1. From the "Special Test Menu", use the
UP
and DOWN
buttons, as
necessary,
to
highlight
NonContinuous Test, then press the
button.
ENTER
2. A “One moment please. . .” message
displays while the request is sent to the
vehicle’s on-board computer.
„
The “Select Test” screen displays.
The screen shows all tests
applicable to the vehicle under test.
Refer to the vehicle’s service repair
manual for information related to
non-continuous tests.
If non-continuous tests are not
supported by the vehicle under test,
an advisory message shows on the
Scan Tool's display. Press the M
button to return to the Mode
Selection menu.
3. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
test, then press the ENTER
button.
4. When test results have been retrieved,
data for the selected test will show on
the Scan Tool’s display. The display
shows the following information:
„
Test ID number
„
Module ID number
„
Component ID number
„
Min or Max test limit
Only one test limit, either Min or Max, is shown for any
given test.
„
72
Test Value and status
3160d
Additional Tests
VIEWING VEHICLE INFORMATION
Status is calculated by the Scan Tool by comparing the Test
Value against the displayed test limit (either Min or Max).
Status is shown as either Low, High or OK.
5. Press the M button to return to the “Select Test” screen. When you
have finished viewing the retrieved test data, press the M button to
return to the “Special Test Menu” screen.
6. Repeat steps 3 through 5 to view test results for additional tests.
EVAP Leak Test
The EVAP Leak Test function lets you initiate a leak test for the
vehicle's EVAP system.
The Scan Tool does not perform the leak test, but signals to
vehicle's on-board computer to initiate the test. The vehicle
manufacturer determines the criteria and method for stopping
the test once it has been started. BEFORE using the EVAP
Leak Test function, refer to the vehicle's service repair manual
to determine the procedures necessary to stop the test.
1. From the "Special Test Menu", use the
UP
and DOWN
buttons as
necessary, to highlight System Test,
button.
then press the ENTER
2. A "One moment please..." message
displays while the request is sent to the
vehicle's on-board computer.
Some vehicle manufacturers do
not allow Tools or other external
devices
to
control
vehicle
systems. If the EVAP Leak Test
is not supported by the vehicle
under test, an advisory message
shows on the Scan Tool's display.
Press the M button to return to
the System Test menu.
3. When the EVAP leak test has been
initiated by the vehicle's on-board
computer, a confirmation message
shows on the Scan Tool's display. Press
the M button to return to the “Special
Test Menu.”
VIEWING VEHICLE INFORMATION
The Vehicle Info function offers three options for retrieving reference
information for the vehicle under test; Vehicle ID, Available Modules
and IPT (In-Use Performance Tracking).
3160d
73
Additional Tests
VIEWING VEHICLE INFORMATION
Retrieving Vehicle ID Information
The Vehicle ID function is applicable to model year 2000 and
newer OBD2-compliant vehicles.
The Scan Tool can retrieve a list of information (provided by the vehicle
manufacturer), unique to the vehicle under test, from the vehicle's onboard computer. This information may include:
„
The vehicle's VIN number
„
The control module identification number
„
The vehicle's calibration ID(s). These IDs uniquely identify the
software version(s) for the vehicle's control module(s).
„
The Vehicle's Calibration Verification Number(s) (CVNs) required by
ODB2 regulations. CVNs are used to determine if emission-related
calibrations for the vehicle under test have been changed. One or
more CVNs may be returned by the vehicle's computer.
1. With the Scan Tool in OBD2 mode,
press and release the M button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Vehicle Info,
then press the ENTER
button.
„
The Vehicle Info Menu displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight Vehicle ID,
then press the ENTER
button.
4. A "One moment please..." message
displays while the requested information
is retrieved from the vehicle's computer.
The first time the Vehicle ID function
is used, it may take several minutes
to retrieve the information from the
vehicle's computer.
5. When the retrieval process is completed,
the vehicle ID information is shown on
the Scan Tool's display. Use the UP
and DOWN
buttons, as necessary,
to view the entire list.
6. When you have finished viewing the retrieved vehicle ID information,
press the M button to exit.
Viewing Available Modules
The Scan Tool can retrieve a list of modules supported by the vehicle
under test.
74
3160d
Additional Tests
VIEWING VEHICLE INFORMATION
1. With the Scan Tool in OBD2 mode,
press and release the M button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Vehicle Info,
then press the ENTER
button.
„
The Vehicle Info Menu displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight Available
Modules, then press the ENTER
button.
4. A "One moment please..." message
displays while the requested information
is retrieved from the vehicle's computer.
5. When the retrieval process is completed,
a complete list of modules supported by
the vehicle under test is shown on the
and
Scan Tool's display. Use the UP
DOWN
buttons, as necessary, to
view the entire list.
6. When you have finished viewing the list
of available modules, press the M
button to return to exit.
Viewing In-use Performance Tracking (IPT)
The Scan Tool can retrieve In-use Performance Tracking (IPT) statistics
for monitors supported by the vehicle under test. Two values are
returned for each monitor; the number of times that all conditions
necessary for a specific monitor to detect a malfunction have been
encountered (XXXCOND), and the number of times that the vehicle has
been operated under the specific conditions for the monitor (XXXCOMP).
Statistics are also provided for the number of times the vehicle has been
operated in OBD monitoring conditions (OBDCOND), and the number of
times the vehicle’s engine has been started (IGNCNTR).
1. With the Scan Tool in OBD2 mode,
press and release the M button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Vehicle Info,
then press the ENTER
button.
3160d
75
Additional Tests
SEARCHING FOR A DTC DEFINTION USING THE DTC LIBRARY (OBD1)
„
The Vehicle Info Menu displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight IPT, then
press the ENTER
button.
4. A “One moment please . . .” message
displays while the requested information
is retrieved from the vehicle’s computer.
5. If In-use Performance Tracking is not
supported by the vehicle under test, an
advisory message shows on the Tool’s
display. Press the M button to exit.
6. When the retrieved process is completed,
In-use Performance Tracking statistics
for monitors supported by the vehicle
under test are shown on the Scan Tool’s
display. Use the UP
and DOWN
buttons, as necessary, to view the entire
list.
7. When you have finished viewing the
statistics, press the M button to exit.
SEARCHING FOR A DTC DEFINTION USING THE DTC
LIBRARY (OBD1)
1. Use the UP
and DOWN
buttons,
as necessary, to highlight DTC Library
in the Main Menu, then press the
button.
ENTER
„
The Select Library screen displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight OBD1
Library in the Menu, then press the
button.
ENTER
„
The Select Manufacturer screen
displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight the desired
vehicle manufacturer, then press the
button.
ENTER
„
76
A confirmation message shows on
the LCD display.
3160d
Additional Tests
SEARCHING FOR A DTC DEFINITION USING THE DTC LIBRARY (OBD2)
-
If the correct manufacturer is
shown, use the UP
and
DOWN
buttons,
as
necessary, to highlight Yes, then
button to
press the ENTER
continue.
-
If the correct manufacturer is now shown, use the UP
and DOWN
buttons, as necessary, to highlight No, then
buttons to return to the list of vehicle
press the ENTER
manufacturers.
4. The Enter DTC screen displays. The
screen shows the code "001", with the
first "0" highlighted.
5. Use the UP
and DOWN
buttons,
as necessary, to scroll to the first digit of
the DTC, then press the DTC/FF button.
„
The selected character displays solid,
and the next character is highlighted.
6. Select the remaining digits in the DTC in
the same way, pressing the DTC/FF
button to confirm each digit. When you
have selected all the DTC digits, press the
ENTER
button to view the DTC
definition.
If a definition for the DTC you
entered is not available, an
advisory message shows on the
Tool’s display.
7. If you wish to view definitions for additional
DTCs, press the M button to return to the
Enter DTC screen, and repeat steps 5 and
6.
8. When all desired DTCs have been viewed, press the M button to
return to the Enter DTC screen (if necessary), then press the M
button to exit the DTC Library.
SEARCHING FOR A DTC DEFINITION USING THE DTC
LIBRARY (OBD2)
1. Use the UP
and DOWN
buttons,
as necessary, to highlight DTC Library
in the Menu, then press the ENTER
button.
3160d
77
Additional Tests
SEARCHING FOR A DTC DEFINITION USING THE DTC LIBRARY (OBD2)
„
The Select Library screen displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight OBD2
Library in the Menu, then press the
button.
ENTER
„
The Enter DTC screen displays. The
screen shows the code “P0001”,
with the “P” highlighted.
3. Use the DOWN
button to scroll to the desired DTC type
(P=Powertrain, U=Network, B=Body, C=Chassis), then press the
DTC/FF button.
„
The selected character displays “solid”,
and the next character is highlighted.
4. Select the remaining characters in the
DTC in the same way, pressing the
DTC/FF button to confirm each character.
When you have selected all the DTC
button
characters, press the ENTER
to view the DTC definition.
„
If you entered a “Generic” DTC
(DTCs that start with “P0”, “P2” and
some “P3”):
- The selected DTC and DTC
definition (if available) show on
the Tool’s display.
If a definition for the DTC you entered is not available, an advisory
message shows on the Tool’s display.
„
If you entered a “Manufacturer-Specific” DTC (DTCs that start
with “P1” and some “P3”):
- The “Select Manufacturer” screen
displays.
- Use the UP
and DOWN
buttons, as necessary, to highlight the appropriate manufacturer,
button
then press the ENTER
to display the correct DTC for
your vehicle. A confirmation
message shows on the LCD display.
and
- If the correct manufacturer is shown, use the UP
DOWN
buttons, as necessary, to highlight YES then press
button to continue.
the ENTER
78
3160d
Additional Tests
VIEWING THE FIRMWARE VERSION - ADJUSTMENTS AND SETTINGS
- If the correct manufacturer is not shown, use the UP
and
DOWN
buttons, as necessary, to highlight NO then press
button to return to the list of vehicle
the ENTER
manufacturers.
If a definition for the DTC you
entered is not available, an
advisory message shows on the
Scan Tool’s display.
5. If you wish to view definitions for
additional DTCs, press the ENTER
button to return to the Enter DTC screen,
and repeat steps 3 and 4.
6. When all desired DTCs have been viewed, press the M button to
return to the Enter DTC screen (if necessary), then press the M
button to exit the DTC Library.
VIEWING THE FIRMWARE VERSION
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Firmware
Version in the Menu, then press the
button.
ENTER
„
The Firmware Version screen displays.
„
The screen shows the Scan Tool’s
current firmware version, bootloader
version and database version.
2. Press the M button to return to the Menu.
ADJUSTMENTS AND SETTINGS
The Scan Tool lets you make several adjustments and settings to
configure the Tool to your particular needs. It also contains an OBD2
DTC Library that allows you to search for DTC definitions. The following
functions, adjustments and settings can be performed when the Tool is
in “MENU Mode”:
„
Adjust Brightness: Adjusts the brightness of the display screen.
„
Audible Tone: Turns the Tool’s audible tone “on” and “off.” When
turned “on,” a tone sounds each time a button is pressed.
„
Display Backlight: Turns the display backlight on and off.
„
Select Language: Sets the display language for the Tool to English,
French or Spanish.
„
Unit of Measurement: Sets the Unit of Measurement for the Tool’s
display to USA or metric.
Adjustments and settings can be made only when the Tool is
NOT connected to a vehicle.
3160d
79
Additional Tests
ADJUSTMENTS AND SETTINGS
To enter the MENU Mode:
1. With the Scan Tool in OBD2 mode,
press and release the M button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Tool Settings,
button.
then press the ENTER
„
The Tool Setting Menu displays.
3. Make adjustments and settings as
described in the following paragraphs.
Adjusting Display Brightness
and DOWN
buttons,
1. Use the UP
as necessary, to highlight Adjust
Brightness in the Menu, then press the
button.
ENTER
„
The Adjust Brightness screen displays.
„
The Brightness field shows the
current brightness setting, from 1 to 4.
2. Press the UP
button to decrease the
brightness of the display (make the
display darker).
button to increase
3. Press the DOWN
the brightness of the display (make the
display lighter).
4. When the desired brightness is obtained,
button to save
press the ENTER
your changes and return to the Menu.
Enabling the Audible Tone
and DOWN
buttons,
1. Use the UP
as necessary, to highlight Audible Tone
in the Menu, then press the ENTER
button.
„
The Audible Tone screen displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight ON or OFF as
desired.
3. When the desired option is selected,
button to save your
press the ENTER
changes and return to the Menu.
80
3160d
Additional Tests
ADJUSTMENTS AND SETTINGS
Using the Backlight
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Display
Backlight in the Menu, then press the
button.
ENTER
„
The Display Backlight screen displays.
and DOWN
buttons,
2. Use the UP
as necessary, to select the desired
backlight mode, either ON or OFF.
3. When the desired backlight mode is
button to
selected, press the ENTER
save your changes.
„
The display returns to the Menu,
and the backlight turns “on” or “off”
as selected.
Selecting the Display Language
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Select
Language in the Menu, then press the
button.
ENTER
„
The Select Language screen displays.
„
The currently selected
Language is highlighted.
display
2. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
display language.
3. When the desired display language is
button
highlighted, press the ENTER
to save your changes and return to the
Menu (shown in the selected display
language).
Setting the Unit of Measurement
and DOWN
buttons,
1. Use the UP
as necessary, to highlight Unit of
Measurement in the Menu, then press
button.
the ENTER
and DOWN
buttons,
2. Use the UP
as necessary, to highlight the desired
Unit of Measurement.
3160d
81
Additional Tests
ADJUSTMENTS AND SETTINGS
3. When the desired Unit of Measurement
value is selected, press the ENTER
button to save your changes and return to
the Menu.
Exiting the MENU Mode
„
82
Press the M button.
3160d
Using Tool Memory
VIEWING DATA IN MEMORY
When you retrieve DTCs from a vehicle, the data is saved to the Scan
Tool’s memory.
Each time you retrieve DTCs, existing data in the Scan Tool's
memory is overwritten with the new data.
VIEWING DATA IN MEMORY
When you turn the Scan Tool on while NOT connected to a vehicle, and
data is currently saved in the Tool's memory, the Scan Tool enters
Memory mode. You can view DTCs and Live Data stored in the Scan
Tool's memory.
1. With the Scan Tool NOT connected to a vehicle. press and release the
POWER/LINK
button to turn the Tool on.
„
If the Scan Tool’s batteries are low,
a warning message displays.
Replace the batteries before
continuing.
2. To view DTCs in the Scan Tool's
memory, press the DTC/FF button.
„
The Tool displays the "priority" DTC.
If there are no OBD2 DTCs
currently stored in the Scan
Tool's memory, an advisory
message shows on the display.
„
Press the DTC/FF button to scroll
through all stored DTCs and to view
Freeze Frame Data (if available).
„
When all OBD2 DTCs have been
displayed and the DTC/FF button is
pressed, the Scan Tool displays the
first enhanced DTC stored in memory.
Press the DTC/FF button to scroll
through all stored enhanced DTCs.
If there are no enhanced DTCs
currently stored in the Scan
Tool’s memory, an advisory
message shows on the display.
3. When you have finished viewing data in
the Scan Tool's memory, press and
release the POWER/LINK
button to turn the Tool off.
3160d
83
Generic (Global) OBD2 PID List
The following is a list of Generic (Global) PIDs and their descriptions.
Tool
Display
ACC Pedal D
ACC Pedal E
ACC Pedal F
Air Status
Ambient
Aux Input
Status
BARO
Unit
%
%
%
*C /
*F
-
Value
XXX.X
XXX.X
XXX.X
UPS, DNS,
OFF
XXX
PID Description
Accelerator Pedal Position D
Accelerator Pedal Position E
Accelerator Pedal Position F
Commanded Secondary Air Status
Ambient Air Temperature
On / Off
Auxiliary Input Status
kPa
/inHg
%
*C /
*F
*C /
*F
*C /
*F
*C /
*F
%
XXX /
XX.X
XXX.X
XXXX.X
Barometric Pressure
XXX.X
Calculated LOAD Value
Catalyst Temperature Bank 1Sensor 1
Catalyst Temperature Bank 1Sensor 2
Catalyst Temperature Bank 2Sensor 1
Catalyst Temperature Bank 2Sensor 2
Commanded EGR
%
XXX.X
Commanded Evaporative Purge
%
XXX.X
Commanded Throttle Actuator
XXXXX
Distance since DTC Cleared
XXXXX
Distance Traveled while MIL ON
ECU Volts
EGR Error
Eng RPM
EQ Ratio
EQ Ratio 11
km
/mile
km
/mile
s
*C /
*F
V
%
min
-
EQ Ratio 12
-
X.XXX
EQ Ratio 13
-
X.XXX
EQ Ratio 14
-
X.XXX
Calc LOAD
CAT Temp 11
CAT Temp 12
CAT Temp 21
CAT Temp 22
Command
EGR
Command
EVAP
Command
TAC
Dist DTC Clr
Dist MIL ON
ECT
84
XXXX.X
XXXX.X
XXXX.X
XXX / XXX
XX.XXX
XXX.X
XXXXX
X.XXX
X.XXX
Engine Coolant Temp
Control Module Voltage
EGR Error
Engine RPM
Commanded Equivalence Ratio
Bank 1 - Sensor 1 Equivalence
Ratio
Bank 1 - Sensor 2 Equivalence
Ratio
Bank 1 - Sensor 3 Equivalence
Ratio
Bank 1 - Sensor 4 Equivalence
Ratio
3160d
Generic (Global) OBD2 PID List
Tool
Display
EQ Ratio 21
Unit
-
Value
X.XXX
EQ Ratio 22
-
X.XXX
EQ Ratio 23
-
X.XXX
EQ Ratio 24
-
X.XXX
EVAP Press
Pa
/in
H2O
kPa
/PSI
%
kPa
/PSI
kPa
/PSI
*C /
*F
%
%
%
%
%
g/s ;l
b/min
kPa
/PSI
hrs,
min
-
XXXX.XX
/XX.XXX
FP / Vac
Fuel Level
Fuel Press
Fuel Press
Fuel Sys 1
Fuel Sys 1
Fuel Sys 1
Fuel Sys 1
Fuel Sys 1
Fuel Sys 2
Fuel Sys 2
Fuel Sys 2
Fuel Sys 2
Fuel Sys 2
IAT
LOAD Value
LTFT B1
LTFT B2
LTFT B3
LTFT B4
MAF
MAP
MIL On Time
Monitor Status
O2S B1 S1
O2S B1 S1
mA
3160d
V
mA
XXXX.XXX
/XXX.X
XXX.X
XXX /
XX.X
XXXXX
/XXXX.X
OL
CL
OL-Drive
OL-Fault
CL-Fault
OL
CL
OL-Drive
OL-Fault
CL-Fault
XXX / XXX
PID Description
Bank 2 - Sensor 1 Equivalence
Ratio
Bank 2 - Sensor 2 Equivalence
Ratio
Bank 2 - Sensor 3 Equivalence
Ratio
Bank 2 - Sensor 4 Equivalence
Ratio
Evap System Vapor Pressure
Fuel Rail Pressure relative
toVacuum
Fuel Level Input
Fuel Rail Pressure
Fuel Rail Pressure
Fuel System 1 Status
Fuel System 1 Status
Fuel System 1 Status
Fuel System 1 Status
Fuel System 1 Status
Fuel System 2 Status
Fuel System 2 Status
Fuel System 2 Status
Fuel System 2 Status
Fuel System 2 Status
Intake Air Temperature
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.XX
/XXXX.X
XXX /
XX.X
XXXX, XX
Absolute Load Value
Long Term Fuel Trim-Bank 1
Long Term Fuel Trim-Bank 2
Long Term Fuel Trim-Bank 3
Long Term Fuel Trim-Bank 4
Air Flow Rate from Mass Air Flow
Sensor
Intake Manifold Absolute Pressure
ICONS on
Display
X.XXX
X.XXX
Monitor Status this Driving Cycle
Engine Run Time while MIL ON
Bank 1 - Sensor 1
Bank 1 - Sensor 1 O2S Current
85
Generic (Global) OBD2 PID List
Tool
Display
O2S B1 S1 V
O2S B1 S2
O2S B1 S2
mA
O2S B1 S2 V
O2S B1 S3
O2S B1 S3
mA
O2S B1 S3 V
O2S B1 S4
O2S B1 S4
mA
O2S B1 S4 V
O2S B2 S1
O2S B2 S1
mA
O2S B2 S1 V
O2S B2 S2
O2S B2 S2
mA
O2S B2 S2 V
O2S B2 S3
O2S B2 S3
mA
O2S B2 S3 V
O2S B2 S4
O2S B2 S4
mA
O2S B2 S4 V
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
O2S Location
OBD Support
86
Unit
V
V
mA
Value
X.XXX
X.XXX
X.XXX
PID Description
Bank 1 - Sensor 1 O2S Voltage
Bank 1 - Sensor 2
Bank 1 - Sensor 2 O2S Current
V
V
mA
X.XXX
X.XXX
X.XXX
Bank 1 - Sensor 2 O2S Voltage
Bank 1 - Sensor 3
Bank 1 - Sensor 3 O2S Current
V
V
mA
X.XXX
X.XXX
X.XXX
Bank 1 - Sensor 3 O2S Voltage
Bank 1 - Sensor 4
Bank 1 - Sensor 4 O2S Current
V
V
mA
X.XXX
X.XXX
X.XXX
Bank 1 - Sensor 4 O2S Voltage
Bank 2 - Sensor 1
Bank 2 - Sensor 1 O2S Current
V
V
mA
X.XXX
X.XXX
X.XXX
Bank 2 - Sensor 1 O2S Voltage
Bank 2 - Sensor 2
Bank 2 - Sensor 2 O2S Current
V
V
mA
X.XXX
X.XXX
X.XXX
Bank 2 - Sensor 2 O2S Voltage
Bank 2 - Sensor 3
Bank 2 - Sensor 3 O2S Current
V
V
mA
X.XXX
X.XXX
X.XXX
Bank 2 - Sensor 3 O2S Voltage
Bank 2 - Sensor 4
Bank 2 - Sensor 4 O2S Current
V
-
X.XXX
O2S11
O2S12
O2S13
O2S14
O2S21
O2S22
O2S23
O2S24
O2S11
O2S12
O2S21
O2S22
O2S31
O2S32
O2S41
O2S42
OBD2
Bank 2 - Sensor 4 O2S Voltage
Oxygen Sensor, Bank 1, Sensor 1
Oxygen Sensor, Bank 1, Sensor 2
Oxygen Sensor, Bank 1, Sensor 3
Oxygen Sensor, Bank 1, Sensor 4
Oxygen Sensor, Bank 2, Sensor 1
Oxygen Sensor, Bank 2, Sensor 1
Oxygen Sensor, Bank 2, Sensor 3
Oxygen Sensor, Bank 2, Sensor 4
Oxygen Sensor, Bank 1, Sensor 1
Oxygen Sensor, Bank 1, Sensor 2
Oxygen Sensor, Bank 2, Sensor 1
Oxygen Sensor, Bank 2, Sensor 2
Oxygen Sensor, Bank 3, Sensor 1
Oxygen Sensor, Bank 3, Sensor 2
Oxygen Sensor, Bank 4, Sensor 1
Oxygen Sensor, Bank 4, Sensor 2
OBD Requirements
3160d
Generic (Global) OBD2 PID List
Tool
Display
OBD Support
OBD Support
Unit
-
OBD Support
OBD Support
OBD Support
OBD Support
-
OBD Support
-
OBD Support
-
OBD Support
OBD Support
-
OBD Support
-
OBD Support
-
Value
OBD
OBD and
OBD2
OBD1
No OBD
EOBD
EOBD and
OBD2
EOBD and
OBD
EOBD,
OBD and
OBD2
JOBD
JOBD and
OBD2
JOBD and
EOBD
JOBD,
EOBD and
OBD2
On / Off
XXX.X
XX
PID Description
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
OBD Requirements
PTO Status
Rel TPS
Spark Adv
%
deg
STFT B1
STFT B1 S1
STFT B1 S2
STFT B1 S3
STFT B1 S4
STFT B2
STFT B2 S1
STFT B2 S2
STFT B2 S3
STFT B2 S4
STFT B3
STFT B4
Time DTC Clr
%
%
%
%
%
%
%
%
%
%
%
%
hrs,
min
sec
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXX.X
XXXX, XX
XXXX
Time Since Engine Start
%
%
%
XXX.X
XXX.X
XXX.X
Absolute Throttle Position
Absolute Throttle Position B
Absolute Throttle Position C
Time Since
Start
TPS
TPS B
TPS C
3160d
Power Take Off Status
Relative Throttle Position
Ignition Timing Advance #1
Cylinder
Short Term Fuel Trim-Bank 1
Bank 1 - Sensor 1
Bank 1 - Sensor 2
Bank 1 - Sensor 3
Bank 1 - Sensor 4
Short Term Fuel Trim-Bank 2
Bank 2 - Sensor 1
Bank 2 - Sensor 2
Bank 2 - Sensor 3
Bank 2 - Sensor 4
Short Term Fuel Trim-Bank 3
Short Term Fuel Trim-Bank 4
Time since DTC Cleared
87
Generic (Global) OBD2 PID List
Tool
Display
Veh Speed
Warm-up DTC
Clr
88
Unit
km/h
/
mph
-
Value
XXX / XXX
XXX
PID Description
Vehicle Speed Sensor
# Warm-ups since DTC Cleared
3160d
Vehicle Applications - ABS
VEHICLE APPLICATIONS – MAKES COVERED
The Scan Tool has the ability to retrieve and erase ABS codes. Vehicle
Makes supported by the Scan Tool are shown below. Please visit
www.innova.com for a complete list of vehicles covered.
BUICK
CADILLAC
CHEVROLET
CHRYSLER
DODGE
FORD
GMC
HUMMER
3160d
JEEP
LEXUS
LINCOLN
MERCURY
OLDSMOBILE
PONTIAC
SCION
TOYOTA
89
Vehicle Applications - SRS
VEHICLE APPLICATIONS – MAKES COVERED
The Scan Tool has the ability to retrieve and erase SRS codes. Vehicle
Makes supported by the Scan Tool are shown below. Please visit
www.innova.com for a complete list of vehicles covered.
BUICK
CADILLAC
CHEVROLET
CHRYSLER
DODGE
FORD
GMC
HUMMER
90
JEEP
LEXUS
LINCOLN
MERCURY
OLDSMOBILE
PONTIAC
SCION
TOYOTA
3160d
Glossary
GLOSSARY OF TERMS AND ABBREVIATIONS
GLOSSARY OF TERMS AND ABBREVIATIONS
CARB – California Air Resources Board
CCM – Central Control Module
Computer Control System – An electronic control system, consisting
of an on-board computer and related sensors, switches and actuators,
used to ensure peak performance and fuel efficiency while reducing
pollutants in the vehicle’s emissions.
DIY – Do-It-Yourself
DLC – Data Link Connector
Drive Cycle – An extended set of driving procedures that takes into
consideration the various types of driving conditions encountered in real
life.
Driving Condition – A specific environmental or operation condition
under which a vehicle is operated; such as starting the vehicle when
cold, driving at steady speed (cruising), accelerating, etc.
DTC(s) – Diagnostic Trouble Code(s)
EGR – Exhaust Gas Recirculation
EPA – Environmental Protection Agency
EVAP – Evaporative Emissions System
Fault Code – See DTCs
Freeze Frame – A digital representation of engine and/or emissions
system conditions present when a fault code was recorded.
FTP – Fuel Tank Pressure
Generic Code – A DTC that applies to all OBD2 compliant vehicles.
I/M Readiness – An indication of whether or not a vehicle’s emissionsrelated system are operating properly and are ready for Inspection and
Maintenance testing.
I/M Test / Emissions Test / Smog Check – A functional test of a
vehicle to determine if tailpipe emissions are within Federal/State/Local
requirements.
LCD – Liquid Crystal Display
LED – Light Emitting Diode
LTFT – Long Term Fuel Trim, is a program in the vehicle’s computer
designed to add or subtract fuel from the vehicle to compensate for
operating conditions that vary from the ideal A/F ratio (long term).
Manufacturer Specific Code – A DTC that applies only to OBD2
compliant vehicles made by a specific manufacturer.
MIL – Malfunction Indicator Lamp (also referred to as “Check Engine”
light
OBD1 – On-Board Diagnostics Version 1 (also referred to as “OBD I”)
3160d
91
Glossary
GLOSSARY OF TERMS AND ABBREVIATIONS
OBD2 – On-Board Diagnostics Version 2 (also referred to as “OBD II”)
On-Board Computer – The central processing unit in the vehicle’s
computer control system.
PCM – Powertrain Control Module
Pending Code – A code recorded on the “first trip” for a “two-trip” code.
If the fault that caused the code to be set is not detected on the second
trip, the code is automatically erased.
PID – Parameter Identification
STFT – Short Term Fuel Trim, is a program in the vehicle’s computer
designed to add or subtract fuel from the vehicle to compensate for
operating conditions that vary from the ideal A/F ratio. The vehicle uses
this program to make minor fuel adjustments (fine tune) on a short-term
basis.
Trip Drive Cycle – Vehicle operation that provides the necessary
driving condition to enable a vehicle Monitor to run and complete its
diagnostic testing.
VECI – Vehicle Emission Control Information Decal
92
3160d
Warranty and Servicing
LIMITED ONE YEAR WARRANTY
The Manufacturer warrants to the original purchaser that this unit is free
of defects in materials and workmanship under normal use and
maintenance for a period of one (1) year from the date of original
purchase.
If the unit fails within the one (1) year period, it will be repaired or
replaced, at the Manufacturer’s option, at no charge, when returned
prepaid to the Service Center with Proof of Purchase. The sales receipt
may be used for this purpose. Installation labor is not covered under this
warranty. All replacement parts, whether new or remanufactured,
assume as their warranty period only the remaining time of this warranty.
This warranty does not apply to damage caused by improper use,
accident, abuse, improper voltage, service, fire, flood, lightning, or other
acts of God, or if the product was altered or repaired by anyone other
than the Manufacturer’s Service Center.
The Manufacturer, under no circumstances shall be liable for any
consequential damages for breach of any written warranty of this unit.
This warranty gives you specific legal rights, and you may also have
rights, which vary from state to state. This manual is copyrighted with all
rights reserved. No portion of this document may be copied or
reproduced by any means without the express written permission of the
Manufacturer. THIS WARRANTY IS NOT TRANSFERABLE. For
service, send via U.P.S. (if possible) prepaid to Manufacturer. Allow 3-4
weeks for service/repair.
SERVICE PROCEDURES
If you have any questions, require technical support or information on
UPDATES and OPTIONAL ACCESSORIES, please contact your local
store, distributor or the Service Center.
USA & Canada:
(800) 544-4124 (6:00 AM-6:00 PM PST, 7 days a week)
All others: (714) 241-6802 (6:00 AM-6:00 PM PST, 7 days a week)
FAX: (714) 432-3979 (24 hr.)
Web: www.innova.com
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