Untitled
Table of Contents
i
INTRODUCTION
WHAT IS OBD? ........................................................................
1
YOU CAN DO IT! ..............................................................................
2
SAFETY PRECAUTIONS
SAFETY FIRST! .......................................................................
3
ABOUT THE SCAN TOOL
VEHICLES COVERED .............................................................
CONTROLS AND INDICATORS ..............................................
DISPLAY FUNCTIONS ............................................................
INITIAL ADJUSTMENTS ..........................................................
4
5
6
8
ONBOARD DIAGNOSTICS
COMPUTER ENGINE CONTROLS .........................................
DIAGNOSTIC TROUBLE CODES (DTCs) ..............................
OBD2 MONITORS ...................................................................
9
14
17
PREPARATION FOR TESTING
BEFORE YOU BEGIN ..............................................................
VEHICLE SERVICE MANUALS ...............................................
29
30
USING THE SCAN TOOL
CODE RETRIEVAL PROCEDURE ..........................................
VIEWING FREEZE FRAME DATA ..........................................
VIEWING ENHANCED DTCs ..................................................
VIEWING ABS DTCs ...............................................................
ERASING DIAGNOSTIC TROUBLE CODES (DTCs) ..............
ABOUT REPAIRSOLUTIONS® ...............................................
I/M READINESS TESTING ......................................................
31
37
38
48
50
52
56
LIVE DATA MODE
VIEWING LIVE DATA ..............................................................
CUSTOMIZING LIVE DATA (PIDs) .........................................
62
63
ADDITIONAL FUNCTIONS
BATTERY/ALTERNATOR MONITOR .....................................
VIEWING VEHICLE INFORMATION .......................................
VIEWING THE FIRMWARE VERSION ....................................
THE TOOL LIBRARY ...............................................................
ADJUSTMENTS AND SETTINGS ...........................................
66
67
70
70
73
GENERIC (GLOBAL) OBD2 PID LIST ............................................
77
VEHICLE APPLICATIONS - ABS
VEHICLE APPLICATIONS – MAKES COVERED ...................
82
WARRANTY AND SERVICING
LIMITED ONE YEAR WARRANTY ..........................................
SERVICE PROCEDURES .......................................................
85
85
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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 and newer vehicles 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 diagnostic 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/Isuzu, Honda/Acura and
Toyota/Lexus vehicles, as well as Anti-Lock Brake System (ABS) DTCs
and vehicle information. The types of enhanced data available depends
on the vehicle make.
To learn more about vehicle Computer Control Systems and
OBD2, see COMPUTER ENGINE CONTROLS on page 8.
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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.” DO NOT
start the engine.
„
The Scan Tool will automatically link to
the vehicle’s computer.
Easy To View . . . .
„
The Scan Tool retrieves stored codes,
Freeze Frame data System Status.
„
Codes, System Status and Freeze
Frame data are displayed on the Scan
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)
DTCs.
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About the Scan Tool
SAFETY FIRST
SAFETY FIRST!
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 trouble-shooting, 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 Code Reader to or disconnecting the Code
Reader from the vehicle’s Data Link Connector (DLC).
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.
The vehicle's battery produces highly flammable hydrogen
gas. To prevent an explosion, keep all sparks, heated items
and open flames away from the battery.
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.
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3
About the Scan Tool
SAFETY FIRST
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. 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.
LEFT CORNER
OF DASH
NEAR
CENTER
OF DASH
BEHIND
ASHTRAY
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.
4
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About the Scan Tool
CONTROLS AND INDICATORS
CONTROLS AND INDICATORS
13
14
10
7
12
11
1
4
2
5
3
6
9
8
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. FF button - When retrieving and viewing DTCs, displays Freeze
Frame data for the highest priority code.
3. DTC button - Displays the DTC View screen and/or scrolls the
display when more than one DTC is present.
4. LD button - When linked to a vehicle, places the Scan Tool in “Live
Data” mode.
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About the Scan Tool
DISPLAY FUNCTIONS
5. M (Menu) button – When pressed while linked to a vehicle, displays
the “Main Menu.”
6. ABS button – When pressed, links the diagnostic tool to the
vehicle’s ABS control module to retrieve diagnostic data from the
computer’s memory.
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 Scan Tool’s LCD display. In
this case, the Multifunction Indicator (“Check Engine”) lamp on the
vehicle's instrument panel will light steady on.
13. LCD Display - Displays test results, Scan Tool functions and Monitor
status information. See DISPLAY FUNCTIONS, below, for details.
14. CABLE - Connects the Scan Tool to the vehicle's Data Link Connector
(DLC).
DISPLAY FUNCTIONS
2
1
3
4
5
8
9
10
11
6
7
Figure 2. Display Functions
6
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About the Scan Tool
DISPLAY FUNCTIONS
See Figure 2 for the locations of items 1 through 11, below.
1. I/M MONITOR STATUS field – Identifies the I/M Monitor status area.
2. Monitor icons - Indicates 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 green, it indicates that the associated Monitor has completed
its diagnostic testing. When a Monitor icon is flashing red, 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 “PC Link”
software is available that makes it possible to upload retrieved data
to a personal computer.
6. DTC Display Area - Displays the Diagnostic Trouble Code (DTC)
number and definition. Each fault is assigned a code number that is
specific to that fault.
7. Test Data Display Area – Displays DTC definitions, Freeze Frame
data, and other pertinent rest information messages.
8. 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.
9. FREEZE FRAME icon - Indicates that “Freeze Frame” data has been
stored in the vehicle’s computer for the currently displayed DTC.
10. Code Type – Indicates whether the code is “generic” or
“manufacturer-specific” and shows the type of code; Stored, Pending
or Permanent.
11. Code Number Sequence – Shows the number of the currently
displayed code and the total number of codes retrieved from the
vehicle’s computer. The Diagnostic Tool assigns a sequence
number to each DTC that is present in the computer’s memory,
starting with “1.” Code number “1” 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.
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About the Scan Tool
INITIAL ADJUSTMENTS
INITIAL ADJUSTMENTS
The first time the unit is connected to a vehicle, the Select Language
screen displays. You must select the desired display language (English,
French or Spanish) and unit of measurement (USA or Metric) as follows:
1. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
display language.
2. When the desired display language is
button to
selected, press the ENTER
confirm your selection.
„
The Select Unit screen displays.
and DOWN
buttons,
3. Use the UP
as necessary, to highlight the desired
unit of measurement.
4. When the desired unit of measurement
button
is selected, press the ENTER
to confirm your selection.
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 70 for further instructions.
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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.
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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
10
INPUT DEVICES
Oxygen Sensors
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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:
„
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A large number of vehicles had deteriorating or degraded
emissions-related components. These components were
causing an increase in emissions.
11
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.
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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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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).
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Onboard Diagnostics
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:
16
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Onboard Diagnostics
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 50, before erasing codes from the computer’s memory. If a
Diagnostic Tool or Scan 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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17
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 will be 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.
18
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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
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Onboard Diagnostics
OBD2 MONITORS
of) the converter. If the catalytic converter loses its ability to store oxygen,
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
20
3040c
Onboard Diagnostics
OBD2 MONITORS
solenoid (depending on solenoid design). The purge solenoid opens a
valve to allow engine vacuum to draw the fuel vapors from the canister
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
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Onboard Diagnostics
OBD2 MONITORS
functions when the computer is in closed-loop. A properly operating
oxygen sensor reacts quickly to any change in oxygen content in the
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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Onboard Diagnostics
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.
24
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
3040c
Onboard Diagnostics
OBD2 MONITORS
Name of
Monitor
Comprehensive
Component Monitor
A
B
C
D
Continuous
1
2
Misfire Monitor
(Type 1 and 3)
Continuous
Misfire Monitor
(Type 2)
Continuous
Fuel System Monitor
1
2
E
F
1
3
40
1
3 - similar
conditions
80
3 - similar
conditions
80
1
Continuous
1
1 or 2
1
3 - similar
conditions
80
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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25
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:
26
3040c
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 sometimes too fast or
too slow
†
Is rough or uneven
†
Fluctuates up and down
RUNNING CONDITIONS
No symptoms
†
Backfires
†
†
†
Misfires or cuts out
Engine knocks, pings or
rattles
†
Is too slow at all times
†
Is too fast
†
†
Runs rough
Lacks power
†
Bucks and jerks
†
Poor fuel economy
†
Surges
†
Hesitates or stumbles on
accelerations
†
Dieseling or run-on
3040c
27
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
†
†
28
Rattle
Knock
†
†
Squeak
Other
3040c
Preparation for Testing
BEFORE YOU BEGIN / VEHICLE SERVICE MANUALS
BEFORE YOU BEGIN
The diagnostic tool aids in monitoring electronic- and emissionsrelated 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.
3040c
29
Preparation for Testing
BEFORE YOU BEGIN
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
„
30
Helm Inc.
14310 Hamilton Avenue
Highland Park, Michigan 48203
Phone: 800-782-4356
Web: www.helminc.com
3040c
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
CODE RETRIEVAL PROCEDURE
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
Preparation for Testing on page 26 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 4 for
connector location.
3. Connect the Scan Tool’s 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.
„
After the Scan Tool’s test connector is properly connected to the
vehicle's DLC, the Vehicle icon
should display to confirm a
good power connection.
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 Scan Tool will automatically
turn ON.
3040c
„
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.
„
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.
31
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
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.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Communication
Error” message shows on the Scan
Tool’s display.
- Ensure your vehicle is OBD2
compliant.
See
VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
- Press the ENTER
„
button to continue.
If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to the
Main Menu.
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for assistance.
7. If the Scan Tool can decode the Vehicle
Identification Number (VIN) for the
vehicle under test, the Vehicle
Information screen displays.
„
32
If the information shown is correct for the vehicle under test, use
and DOWN
buttons, as necessary, to highlight
the UP
Yes, then press the ENTER
button. Proceed to step 10.
3040c
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
If the information shown is not correct for the vehicle under text,
or if you wish to manually select the vehicle, use UP
and
DOWN
buttons, as necessary, to highlight No, then press
the ENTER
button. Proceed to step 8.
„
If the Scan Tool cannot decode the Vehicle Identification
Number (VIN) for the vehicle under test, the Select Vehicle
screen displays. Proceed to step 8.
8. When No is selected from the Vehicle
information screen, the Select Vehicle
screen displays. The Select Vehicle
screen lists the three most recently
tested vehicles.
„
To select a previously tested vehicle,
use the UP
and DOWN
buttons, as necessary, to highlight
the desired vehicle, then press the
button. Proceed to step 10.
ENTER
„
To select a new vehicle, use the UP
and DOWN
buttons, as
necessary, to highlight New Vehicle,
then press the ENTER
button.
Proceed to step 9.
9. When New Vehicle is chosen from the
Select Vehicle screen, the Select Year
screen displays.
„
Use the UP
and DOWN
buttons, as necessary, to highlight
the desired vehicle model year, then
press the ENTER
button to
continue. If necessary, select Next
to view additional options.
-
„
Use the UP
and DOWN
buttons, as necessary, to highlight
the desired vehicle make, then
button to
press the ENTER
continue. If necessary, select Next
to view additional options.
-
3040c
The Select Make screen displays.
The Select Model screen displays.
33
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
Use the UP
and DOWN
buttons, as necessary, to highlight
the desired vehicle model, then
press the ENTER
button to
continue. If necessary, select Next
to view additional options.
-
„
The Select Engine screen displays.
Use the UP
and DOWN
buttons, as necessary, to highlight
the desired vehicle engine size,
button to
then press the ENTER
continue. If necessary, select Next
to view additional options.
-
The Select Transmission screen
displays.
„
Use the UP
and DOWN
buttons, as necessary, to highlight
the desired transmission type, then
press the ENTER
button to
continue. If necessary, select
to view additional
ENTER
options. The Vehicle Information
screen displays.
„
If the information shown is correct for the vehicle under test, use
and DOWN
buttons, as necessary, to highlight
the UP
Yes, then press the ENTER
button. Proceed to step 10.
„
If the information shown is not correct for the vehicle under text,
or if you wish to reselect the vehicle, use UP
and DOWN
buttons, as necessary, to highlight No, then press the ENTER
button to return to the Select Year screen.
10. After approximately 10~60 seconds, the Scan Tool will retrieve and
display any Diagnostic Trouble Codes, Monitor Status and Freeze
Frame Data retrieved from the vehicle’s computer memory.
34
„
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 DTC’s or
Freeze Frame data presently stored
in the vehicle’s computer” message
is displayed.
„
The Scan Tool is capable of retrieving
and storing up to 32 codes in memory,
for immediate or later viewing.
3040c
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
11. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 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 green Monitor
icon indicates the associated Monitor has run and completed its
testing. A blinking red Monitor icon indicates the associated
Monitor has not run and completed its testing.
„
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, or when viewing Freeze
Frame Data, 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
UP
and DOWN
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 Scan Tool’s display.
12. Read and interpret the Diagnostic Trouble Codes using the LCD
display and the green, yellow and red LEDs.
The green, yellow and red LEDs are used (with the LCD
display) as visual aids to make it easier to determine
engine system conditions.
„
3040c
Green LED - Indicates that all
engine systems are "OK" and
running normally. All monitors on
the vehicle are active and are
performing their diagnostic testing,
and no trouble codes are present. A
zero will show on the Scan Tool’s
display, and all Monitor icons will be
solid.
35
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
Yellow LED - Indicates one of the following conditions:
PENDING CODE PRESENT - If the
yellow LED is lit, it may indicate the
existence of a pending code. Check
the Scan Tool’s LCD display for
confirmation. A pending code is
confirmed by the presence of a
numeric code and the word PENDING
on the Scan Tool’s LCD display.
MONITOR STATUS - If the Scan
Tool’s LCD display shows a zero
(indicating there are no DTCs present
in the vehicle's computer), but the
yellow LED is lit, it indicates a "Monitor
Has Not Run" status. This means that
some of the Monitors on the vehicle
have not yet finished their diagnostic
self-testing.
This
condition
is
confirmed by one or more blinking
Monitor icons on the LCD display. A
blinking Monitor icon means the
Monitor has not yet run and finished
its diagnostic self-testing. All Monitor
icons that are solid have completed
their diagnostic self-testing.
„
Red LED - Indicates there is a
problem with one or more of the
vehicle's systems. The red LED is
also used to show that DTC(s) are
present (displayed on the Scan Tool’s
LCD display). In this case, the
Malfunction Indicator (Check Engine)
lamp on the vehicle's instrument panel
will light steady on.
„
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.
„
DTC’s that start with “P1” and some “P3” are Manufacturer
specific codes and their code definitions vary with each vehicle
manufacturer.
13. If more than one DTC was retrieved, and to view Freeze Frame
Data, press and release the DTC button, as necessary.
„
36
Each time the DTC 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.
3040c
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
„
Freeze Frame Data (if available) can be viewed at any time by
pressing the FF button.
„
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.
See VIEWING FREEZE FRAME DATA on page 37.
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 the optional “PC Link” softare.
(see instructions included with PC-Link program for more
information).
14. When the last retrieved DTC has been displayed and the DTC
button is pressed, the screen returns to the first retrieved DTCs.
15. Determine engine system(s) condition by viewing the Scan Tool’s
display for any retrieved Diagnostic Trouble Codes, code definitions,
Freeze Frame data and Live 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).
To prolong battery life, the Scan Tool automatically shuts “Off”
approximately three minutes after it is disconnected from the
vehicle. The DTCs retrieved, captured Live Data Information,
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
Scan Tool is re-linked to a vehicle to retrieve codes/data, any
prior codes/data in its memory are automatically cleared.
VIEWING FREEZE FRAME DATA
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.
3040c
37
Using the Scan Tool
VIEWING ENHANCED DTCs
1. While linked to the vehicle, press and release the FF button.
„
The Freeze Frame screen displays.
„
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.
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’s 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.
„
Use the UP
and DOWN
buttons, as necessary, to view all
available Freeze Frame data.
If Freeze Frame data is not
presently stored in the vehicle’s
computer, an advisory message
displays. Press the M button to
return to the OBD2 DTC screen.
2. When finished, press and release the M
button to return to the Main Menu
screen.
VIEWING ENHANCED DTCs
The “enhanced” mode provides the ability to retrieve OEM enhanced
DTCs from most Chrysler/Jeep, Ford/Mazda, GM/Isuzu, Honda/Acura
and Toyota/Lexus vehicles. The types of enhanced data available
depends on the vehicle make.
To view Enhanced DTCs:
1. With the Scan Tool on the Code
Retrieval screen, press and release the
M button.
„
The Main Menu displays.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight OEM Enhanced, then press the ENTER
button.
38
3040c
Using the Scan Tool
VIEWING ENHANCED DTCs
„
If enhanced communication is not
supported by the vehicle under test,
an advisory message displays.
Press the POWER/LINK
button to re-link to the vehicle’s
computer. Enhanced functionality is
not available for your vehicle.
Refer to the appropriate paragraph to view enhanced DTCs for your
vehicle:
„
„
„
„
„
Chrysler/Jeep Enhanced DTCs .............page 39
Ford/Mazda Enhanced DTCs ................page 41
GM/Isuzu Enhanced DTCs ....................page 43
Honda/Acura Enhanced DTCs ..............page 45
Toyota/Lexus Enhanced DTCs..............page 47
Chrysler/Jeep Enhanced DTCs
When OEM Enhanced is chosen from the
Main Menu, (and Chrysler is selected when
prompted), the Scan Tool retrieves OEM enhanced DTCs from the vehicle’s computer.
1. 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 “Communication
Error” message shows on the Scan
Tool’s display.
- Ensure your vehicle is OBD2
compliant.
See
VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
„
- Press the ENTER
button to continue.
If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to the
Main Menu.
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for assistance.
3040c
39
Using the Scan Tool
VIEWING ENHANCED DTCs
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 for a description of
LCD 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 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
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 button, as
necessary, to display additional codes one at a time.
4. When the last retrieved DTC has been displayed and the DTC
button is pressed, the Scan Tool returns to the “Priority” code.
„
40
To view additional enhanced DTCs, repeat steps 1 through 4,
above.
3040c
Using the Scan Tool
VIEWING ENHANCED DTCs
„
To exit the enhanced mode, press the M button to return to the
and DOWN
buttons, as
Main Menu. Use the UP
necessary, to highlight Global OBD, then press the ENTER
button to return to the Global OBD2 mode.
Ford/Mazda Enhanced DTCs
Mazda Enhanced DTCs are available for Mazda-branded
Ford vehicles only.
When OEM Enhanced is chosen from the
Main 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
„
If KOER is selected, an advisory
message shows on the Scan Tool’s
display.
- Start and warm the engine to
normal operating temperature,
then press the ENTER
button.
Proceed to step 3.
2. If KOEO or Continuous Memory is
selected, an “instructional” message
shows on the Scan Tool’s display.
„
Turn the ignition OFF, then back
ON. Press the ENTER
button.
Proceed to step 3.
3. A “One moment please” message
displays while the test is in progress.
„
If the Scan Tool fails to link to the
vehicle’s computer, a “Communication
Error” message shows on the Scan
Tool’s display.
- Ensure your vehicle is OBD2
compliant.
See
VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
- Press the ENTER
3040c
button to continue.
41
Using the Scan Tool
VIEWING ENHANCED DTCs
„
If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to the
Main Menu.
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for
assistance.
„
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.
4. If the KOER test was selected, an
“instructional” message shows on the
Scan Tool’s display.
„
Turn the steering wheel to the right,
then release.
„
Press and release the brake pedal.
„
Cycle the
equipped).
„
A “One moment please” message displays while the test is in
progress.
overdrive
switch
(if
5. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 for a description of
LCD 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 display shows the number of
the code currently being displayed,
the total number of codes retrieved.
„
42
3040c
Using the Scan Tool
VIEWING ENHANCED DTCs
„
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.
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.
„
For additional help with a displayed DTC, use the UP
and
buttons, as necessary, to highlight Help, then press
DOWN
the ENTER
button.
„
The Scan Tool will display a code
only if codes are present in the
vehicle’s computer memory. If no
codes are present, a “System Pass”
message is displayed. Press the M
button to return to the Main Menu.
6. If more than one code was retrieved
press the DTC button, as necessary, to
display additional codes one at a time.
7. When the last retrieved DTC has been displayed and the DTC
button is pressed, the Scan Tool returns to the “Priority” code.
„
To view additional enhanced DTCs, repeat steps 1 through 6,
above.
„
To exit the enhanced mode, press the M button to return to the
Main Menu. Use the UP
and DOWN
buttons, as
necessary, to highlight Global OBD, then press the ENTER
button to return to the Global OBD2 mode.
General Motors/Isuzu Enhanced DTCs
When OEM Enhanced is chosen from the
Main Menu, (and GM is selected when
prompted), the Scan Tool retrieves OEM
enhanced DTCs from the vehicle’s computer.
1. A “One moment please” message
displays while the Scan Tool retrieves
the selected DTCs.
„
3040c
If the Scan Tool fails to link to the
vehicle’s computer, a “Communication Error” message shows on the
Scan Tool’s display.
43
Using the Scan Tool
VIEWING ENHANCED DTCs
- Ensure your vehicle is OBD2 compliant. See VEHICLES
COVERED on page 4 for vehicle compliance verification information.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
„
button to continue.
- Press the ENTER
If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to the
Main Menu.
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for assistance.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 for a description of
LCD 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 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 UP
and
buttons, as necessary, to view the additional
DOWN
information.
44
3040c
Using the Scan Tool
VIEWING 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 button, as
necessary, to display additional codes one at a time.
4. When the last retrieved DTC has been displayed and the DTC
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 to return to the
and DOWN
buttons, as
Main Menu. Use the UP
necessary, to highlight Global OBD, then press the ENTER
button to return to the Global OBD2 mode.
Honda/Acura Enhanced DTCs
When OEM Enhanced is chosen from the
Main Menu, (and Honda is selected when
prompted), the Scan Tool retrieves OEM
enhanced DTCs from the vehicle’s
computer.
1. 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 “Communication Error” message shows on the
Scan Tool’s display.
- Ensure your vehicle is OBD2
compliant.
See
VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
„
- Press the ENTER
button to
continue.
If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to the
Main Menu.
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45
Using the Scan Tool
VIEWING ENHANCED DTCs
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for assistance.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 for a description of
LCD 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 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 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 button, as
necessary, to display additional codes one at a time.
4. When the last retrieved DTC has been displayed and the DTC
button is pressed, the diagnostic tool returns to the “Priority” code.
„
46
To view additional enhanced DTCs, repeat steps 1 through 4,
above.
3040c
Using the Scan Tool
VIEWING ENHANCED DTCs
„
To exit the enhanced mode, press the M button to return to the
and DOWN
buttons, as
Main Menu. Use the UP
necessary, to highlight Global OBD, then press the ENTER
button to return to the Global OBD2 mode.
Toyota/Lexus Enhanced DTCs
When OEM Enhanced is chosen from the
Main Menu, (and Toyota is selected when
prompted), the Scan Tool retrieves OEM
enhanced DTCs from the vehicle’s computer.
1. 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 “Communication Error” message shows on the
Scan Tool’s display.
- Ensure your vehicle is OBD2
compliant.
See
VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
- Press the ENTER
„
button to continue.
If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to the
Main Menu.
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for assistance.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 for a description of
LCD display elements.
3040c
„
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.
47
Using the Scan Tool
VIEWING ABS DTCs
„
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 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 button, as
necessary, to display additional codes one at a time.
4. When the last retrieved DTC has been displayed and the DTC
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 to return to the
and DOWN
buttons, as
Main Menu. Use the UP
necessary, to highlight Global OBD, then press the ENTER
button to return to the Global OBD2 mode.
VIEWING ABS DTCs
Refer to Vehicle Applications - ABS on page 82 for vehicle
makes covered. For a complete list of vehicle’s covered,
please visit www.innova.com.
48
3040c
Using the Scan Tool
VIEWING ABS DTCs
Reading ABS DTCs
1. From the OBD2 DTC screen or OEM
enhanced DTC screen, press the ABS
button.
2. A "One moment please" message
displays while the Scan Tool retrieves
the selected DTCs.
„
If the vehicle does not support ABS
communication, an advisory message
shows on the Scan Tool’s display.
Press the M button to return to the
Main Menu.
„
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.
- Press the ENTER
„
button to continue.
If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the M button to return to the
Main Menu.
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for assistance.
3. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 for a description of
LCD display elements.
3040c
„
A visible
icon indicates that the
diagnostic tool is being powered
through the vehicle’s DLC connector.
„
A visible
icon indicates that the
diagnostic
tool
is
linked
to
(communicating with) the vehicle’s
computer.
„
The display shows the number of
the code currently being displayed,
the total number of codes retrieved.
49
Using the Scan Tool
ERASING DIAGNOSTIC TROUBLE CODES (DTCs)
„
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 display.
I/M MONITOR STATUS icons are
not displayed when viewing ABS
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.
4. If more than one code was retrieved press the DTC button, as
necessary, to display additional codes one at a time.
5. When the last retrieved DTC has been displayed and the DTC button is
pressed, the diagnostic tool returns to the “Priority” code.
„
To exit the enhanced mode, press the M button. The Scan Tool
returns to the Main Menu.
ERASING DIAGNOSTIC TROUBLE CODES (DTCs)
When the Scan Tool’s ERASE function is used to erase
the DTCs from the vehicle's on-board computer, "Freeze
Frame" data and manufacturer-specific enhanced data are
also erased.
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 status of all
the 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.
50
3040c
Using the Scan Tool
ERASING DIAGNOSTIC TROUBLE CODES (DTCs)
1. If not connected already, connect the
Scan Tool to the vehicle's DLC. (If the
Scan 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 31.
„
To erase OBD2 DTCs: Wait until
the codes are displayed on the Scan
Tool’s LCD and then proceed to
step 3.
„
To erase OEM enhanced or ABS DTCs: Perform the Code
Retrieval procedure for OEM enhanced DTCs as described on
page 38 or for ABS DTCs as described on page 48. Wait until
the codes are displayed on the diagnostic tool’s LCD and then
proceed to step 3.
3. Press and release the ERASE
button. A confirmation message shows
on the display.
„
If you are sure you want to proceed,
use the UP
and DOWN
buttons, as necessary, to highlight
YES, then press the ENTER
button to erase DTCs from the
vehicle’s computer.
„
If you do not want to continue with
the erase process, use the UP
buttons, as
and DOWN
necessary, to highlight NO, then
press the ENTER
button to exit
the erase mode.
4. If you chose to erase DTCs, a “One
moment please…” message displays
while the erase function is in progress.
If the vehicle’s engine is running, an
advisory message shows on the
diagnostic tool’s display. Turn the
engine OFF, then turn the ignition
back to ON. DO NOT start the
engine. Press the ENTER
button to continue.
„
3040c
If the erase was successful, a
confirmation message shows on the
display. Press the M button to return
to the Main Menu.
51
Using the Scan Tool
ABOUT REPAIRSOLUTIONS®
„
If the erase was not successful, an
advisory message shows on the
display indicating the erase request
was sent to the vehicle’s computer.
Press the M button to return to the
Main Menu.
Erasing DTCs does not fix the
problem(s) that caused the code(s)
to be set. If proper repairs to correct the problem that caused
the code(s) to be set are not made, the code(s) will appear
again (and the check engine light will illuminate) as soon as
the vehicle is driven long enough for its Monitors to complete
their testing.
ABOUT REPAIRSOLUTIONS®
RepairSolutions® is a web-based service that provides you with the
tools and information you need to quickly and accurately diagnose and
repair today’s vehicles. RepairSolutions® lets you view, save, and email
the diagnostic data retrieved from a vehicle’s on-board computer(s)
using an Innova Scan Tool. At the core of RepairSolutions® is an
extensive knowledge database, developed by compiling and analyzing
years worth of “real world” vehicle service data. RepairSolutions® builds
on manufacturer-recommended diagnostic and repair information by
providing verified, vehicle-specific fixes supplied by ASE technicians
across the country. The basic RepairSolutions® account is free, and is
available immediately upon purchase of your Innova tool and a one-time
software download. Certain “value added” premium information is
available on demand at nominal charge or through “premium”
subscription.
The RepairSolutions® Diagnostic Report
The RepairSolutions® Diagnostic Report provides you with detailed
information for diagnosing and repairing vehicle issues. The Diagnostic
Report gives you the following information:
Some features are available only with a “premium” subscription to RepairSolutions®.
52
„
Summary – The Summary page shows the current status of your
vehicle’s emissions, engine/transmission, supplemental restraint
(airbag) and anti-lock brake systems, and provides a summary of
the issues associated with your vehicle.
„
Verified Fixes – The Verified Fixes page lists the most likely
repair(s) needed by your vehicle based on the DTCs retrieved. It
includes cost estimates for the repair(s) based on your geographic
location, provides access to detailed instructions for performing the
repair(s), and includes links to supplemental information (including
articles and videos) related to the affected component or system.
3040c
Using the Scan Tool
ABOUT REPAIRSOLUTIONS®
„
Diagnostic Data – The Diagnostic Data page provides detailed
information related to the DTCs retrieved from your vehicle’s
computer. It includes descriptions of the retrieved DTCs including
the conditions under which each DTC was set, the probable causes
for the issue and recommendations for verifying the problem. You
can also view Freeze Frame data for the “priority” DTC (the DTC
that caused the MIL to illuminate) and current I/M Monitor status.
„
TSBs / Recalls - Even with the exhaustive testing a vehicle
undergoes before being made available to the public, some issues are
discovered only under “real world” driving conditions. Depending on
the severity of the problem, the vehicle manufacturer may issue a
Technical Service Bulletin describing the problem, and providing the
procedures necessary to correct it. For safety related problems,
vehicle manufacturers are required to issue vehicle recalls to correct
the problem. The TSBs / Recalls page lists three main categories for
issues related to your vehicle: Factory Technical Service Bulletins
(TSBs), Factory Recalls, and Government-mandated NHTSA Safety
Recalls. This information can help you identify a problem before it
occurs, and ensure your vehicle meets Federal safety standards.
„
Maintenance - The Maintenance page provides information to help
keep your vehicle in top running condition. The page uses your
vehicle’s year, make, model and current mileage to provide a list of
manufacturer-recommended periodic maintenance procedures that
should be performed during its next scheduled service. These
maintenance items are highly recommended and should be performed to best protect against premature failure. The page also
includes additional recommended service procedures based on
analysis of component failures reported by the RepairSolutions®
network of technicians for vehicles of your make, model and mileage.
All procedures include estimates of cost and level of difficulty.
„
Warranty – Warranties are the vehicle manufacturer's promise to
cover certain repair/replacement costs for a specific amount of time
or until the vehicle has been driven for a specific number of miles.
The Warranty page provides an estimation of the current state of
your vehicle’s warranties (whether they are active, expired, and/or
transferable). This information is intended for reference only. It is
based on manufacturer published data available at the time the data
was gathered and may not fully reflect your actual warranty
coverage.
„
Predicted Repairs – Solving a problem before it becomes a
problem can reduce out-of-pocket cost and minimize personal
inconvenience. Through detailed analysis of historical repair
information supplied by technician across the country,
RepairSolutions® is able to provide highly accurate predictions of
potential service and repair requirements based on your vehicle’s
year, make, model and mileage. The Predicted Repairs page
provides a list of predicted repairs for your vehicle over the next 12
months. The predicted repairs are weighted by probability (high,
moderate or low) and include cost estimates.
„
Vehicle History Reports – Thinking of buying a vehicle?
RepairSolutions® provides “one click” access for the purchase of a
vehicle history report.
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53
Using the Scan Tool
ABOUT REPAIRSOLUTIONS®
The Portal Page
The Portal page gives you an overview of your RepairSolutions®
account. It shows your Account Status and provides access to the
reports you have most recently generated using a registered Innova tool.
Innova Account
The Innova Account section lets you manage the vehicles and tools
you’ve registered with your account and manage your personal
information.
„
My Garage – Your RepairSolutions® account can be used for
multiple vehicles. The My Garage page you add, view and edit
vehicles for your account.
„
Report History – Each report you create through RepairSolutions® is
retained through the lifetime of your membership, giving you an
overview of the health of your vehicles. The Report History page lets
you browse a list of all reports created through RepairSolutions® for
all vehicles registered to your account, and view any report listed. You
can also search the list based on the criteria (report #, VIN, etc.) you
specify.
„
Registered Devices – You can register all of your Innova tools with
your RepairSolutions® account. The Registered Devices page
shows all the tools registered to your account along with the date on
which the device was activated.
„
Order History – You can purchase “premium” access to
RepairSolutions® on a monthly or annual basis. The Order History
page lists all subscriptions you’ve purchased for your account.
„
Profile and Reset Password – These pages let you update and
maintain your personal account information and change the
password you use to log in to RepairSolutions®.
Tools
The RepairSolutions® Tools section provides access to several
databases offering maintenance and repair instruction, “tech tips,” safety
information and general reference data.
54
„
How-To Videos – With the complexity of today’s vehicles, repair
tasks can seem daunting even to the seasoned do-it-yourselfer.
RepairSolutions® offers a rich selection of How-To Videos that
provide step-by-step instruction for a variety of tasks, including
general maintenance, diagnosis and troubleshooting, and detailed
repair information. The “basic” membership provides access to a
selection of available videos, while the “premium” subscription
allows access to the complete video library.
„
Recalls – Even with the exhaustive testing a vehicle undergoes
before being made available to the public, some issues are
discovered only under “real world” driving conditions. When an issue
that affects personal safety is found, or if a vehicle does not meet
Federal safety standards, the Government mandates that the
vehicle manufacturer issue a “safety recall.” Safety recalls are
official notices that describe known vehicle issues as well as the
3040c
Using the Scan Tool
ABOUT REPAIRSOLUTIONS®
related safety concerns. Repairs performed to address a safety
recall are provided free of cost by the vehicle manufacturer’s
dealership. The Recalls database helps you ensure the safety of
your vehicle. You can search for safety recalls by entering a
vehicle’s year, make and model.
„
DTC Library – Diagnostic Trouble Codes (DTCs) are the starting
point for identifying, troubleshooting and repairing vehicle issues.
The DTC Library contains definitions for “generic” and
“manufacturer-specific” OBD2 DTCs as well as OBD1 codes.
Currently, the database provides code definitions for 43 different
vehicle makes. Select the desired make and enter the DTC to
retrieve the specific definition for your vehicle. Because OBD2 is an
evolving system, the DTC Library is continuously updated to
include additional “manufacturer-specific” definitions as the system
matures.
„
DLC Locator – The key to unlocking the wealth of information
available through OBD2 is the Data Link Connector (DLC), the
doorway to your vehicle’s computer. The DLC Locator is a
comprehensive database of DLC locations for all OBD2-certified
vehicles. Simply enter a Vehicle Identification Number (VIN), or
select the desired year, make and model, and the DLC Locator will
return a description and photo illustration of the DLC location.
„
Tech Tips – Updated quarterly, RepairSolutions® Tech Tips are
designed to provide basic solutions to everyday vehicle issues,
explain how to perform much needed maintenance, and provide
basic information on how to take care of your vehicle. All Tech Tips
are prepared, reviewed and approved with the support of ASE
Certified Technicians.
„
Shop Locator – Whether you want to purchase parts to make a
repair yourself or find a local repair shop, the Shop Locator will return
a list facilities near your location based on the Zip Code you provide.
Hardware Requirements:
„
Innova Scan Tool
„
Mini USB Cable (included with tool)
Minimum System Operating Requirements:
„
Windows®
OS Requirements
- Windows® XP / Windows® Vista (32/64-bit editions) / Windows®
7 (32/64-bit editions) / Windows® 8 / Windows® 8.1
Minimum Hardware Requirements
- 50 MB free disk space
- 128 MB RAM
- Pentium processor or better
- One available USB port (USB 2.0 preferred)
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Using the Scan Tool
I/M READINESS TESTING
Other Requirements
- Internet Connection
- Internet Explorer 5.5, Netscape 7.0 or Firefox 2.0 browser or newer
„
MAC®
OS Requirements
- Mac OS 10.4.4 and newer
Minimum Hardware Requirements
- 100 MB free disk space
- 256 MB of RAM
- Intel processor running at 700 MHz or greater
- One available USB port
Other Requirements
- Internet Connection
- Safari 3.0, Netscape 7.2 or Firefox 3.0 browser or newer
Accessing RepairSolutions®
1. Link your Scan Tool to a vehicle and retrieve diagnostic data.
2. Visit www.innova.com, download and install the latest PC-Link software
for your Scan Tool. Select the Support tab, then choose Manuals and
Software. Use the drop-down menu provided to select your tool
Category and tool Model to download the latest PC-Link software.
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 have not yet established an account, you must register
for a FREE RepairSolutions® account before proceeding.
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.
56
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Using the Scan Tool
I/M READINESS TESTING
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.
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.
To learn more about Emissions Inspection and Maintenance
(I/M) Readiness Monitors, see OBD2 MONITORS on page 16.
Each Monitor has a specific function to test
and diagnose only its designated emissionsrelated 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.
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Using the Scan Tool
I/M READINESS TESTING
„
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.
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
Scan 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.
58
3040c
Using the Scan Tool
I/M READINESS TESTING
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
31, 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 31) which of the two possible
conditions is causing the yellow LED to
light.
„
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 selfdiagnostic 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).
3040c
59
Using the Scan Tool
I/M READINESS TESTING
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 Scan Tool's
screen). The Multifunction 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.
4. Flashing Red and Yellow LEDs – Indicates that a "permanent"
code has been set, and one or more of the vehicle’s monitors has
failed its diagnostic testing. A "permanent" DTC can be cleared only
by the vehicle's computer following successful completion of the
monitor that caused the fault to set.
If the Red LED or flashing RED and YELLOW LEDs were obtained,
there is a definite problem present in the system(s). In these cases,
you have the following options.
„
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.
„
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).
On some vehicle models, the computer will store non-emission
related DTCs. These DTCs will not command the MIL on since
they are not emission related. If the Scan Tool retrieves one of
these types of codes, the MIL will not be commanded on, and
the Yellow LED on the Scan Tool will be illuminated. In most
cases, these types of codes will not prevent the Emissions
Test from being performed.
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 Scan Tool to
the vehicle's DLC and erase the code or codes from the vehicle's
computer memory.
„
60
See page 50 for procedures for ERASING DIAGNOSTIC
TROUBLE CODES (DTCs) from the vehicle's on-board computer.
3040c
Using the Scan Tool
I/M READINESS TESTING
„
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 Scan Tool’s LCD display will be flashing. Leave the Scan 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 Scan Tool’s LCD
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 Scan Tool for
Monitor RUN status. Trying to drive and observe the Scan
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 Scan Tool’s LCD display changes from
"flashing" to "solid,” indicating that the Monitor has run and finished
its diagnostic testing.
3040c
„
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.
„
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.
61
Live Data Mode
VIEWING LIVE DATA
The Scan Tool is a special 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. A “One moment please . . .” message
displays
while
the
Scan
Tool
establishes communication with the
vehicle.
„
If the Scan Tool fails to establish
communication with the vehicle, a
“Communication Error” message is
shown on the Scan Tool’s display.
- Ensure your vehicle is OBD2
compliant.
See
VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC,
and verify the ignition is ON.
- Turn the ignition OFF, wait 5
seconds, then back ON to reset
the computer.
- Press the ENTER
continue.
button to
3. Real-time Live Data (PID) information supported by the vehicle
under test displays.
62
3040c
Live Data Mode
CUSTOMIZING LIVE DATA (PIDs)
„
If Live Data is not supported by the
vehicle under test, an advisory
message displays. Press the M
button to return to the Main Menu.
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.
4. 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.
„
If communication with the vehicle is
lost while viewing Live Data, a
Communication Lost" message
shows on the Scan Tool's display.
5. Press and hold the ENTER
button to
view the “expanded” definition for the
currently selected PID. Release the
ENTER
button to return to 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.
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. With the Scan Tool in Live Data mode (see VIEWING LIVE DATA
on page 62), press and hold the LD button until the Live Data Menu
displays, then release the LD button.
3040c
63
Live Data Mode
CUSTOMIZING LIVE DATA (PIDs)
2. Use the UP
and DOWN
buttons,
as necessary, to highlight Custom Live
Data, then press the ENTER
button.
„
If the Scan Tool fails to establish
communication with the vehicle, a
“Communication Error” message is
shown on the Scan Tool’s display.
- Ensure your vehicle is OBD2
compliant.
See
VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC,
and verify the ignition is ON.
- Turn the ignition OFF, wait 5
seconds, then back ON to reset
the computer.
- Press the ENTER
continue.
button to
„
If Live Data is not supported by the
vehicle under test, an advisory
message displays. Press the M
button to return to the Main Menu.
Live Data is not available for your
vehicle.
„
If custom Live Data was previously
selected, the Select PIDs to Use
screen displays.
- To use the existing custom Live data selections, use the UP
and DOWN
buttons, as necessary, to highlight Use
existing PIDs, then press the ENTER
button. Proceed to
step 5.
- To select new custom Live Data, use the UP
and DOWN
buttons, as necessary, to highlight Select new PIDs, then
press the ENTER
button. The Custom Live Data menu
displays, with the first PID in the menu highlighted. Proceed to
step 3.
„
64
If custom Live Data was not previously selected, the Custom
Live Data menu displays, with the first PID in the menu
highlighted. Proceed to step 3.
3040c
Live Data Mode
CUSTOMIZING LIVE DATA
3. Use the UP
and DOWN
buttons
to scroll through the available PIDs.
When the PID you wish to display is
highlighted, press the ENTER
button
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
press the ENTER
button. The checkmark will be removed
from the checkbox.
4. When you are finished making your
selection(s), scroll to the end of the PID
list and highlight the word Done, then
button.
press the ENTER
„
If no PIDs have been selected, an
advisory message displays. Press
the M button to return to the Custom
Live Data menu.
5. The Scan Tool is now in "Custom Live Data" mode. Only the PIDs
you selected are shown on the Scan Tools display.
„
To add additional PIDs to the
current custom Live Data selections,
and DOWN
use the UP
buttons, as necessary, to highlight
More PIDs, then press the ENTER
button to return to the Custom
Live Data menu. Repeat step 4.
6. To exit the "Custom Live Data" mode, press the M button to return
to the Main Menu.
3040c
65
Additional Functions
BATTERY/ALTERNATOR MONITOR
BATTERY/ALTERNATOR MONITOR
The Scan Tool can perform a check of the vehicle’s battery and
alternator system to ensure the system is operating within acceptable
limits. You can perform a battery check only, or an alternator system
(battery and alternator) check.
To perform a battery check ONLY:
1. With the Scan Tool on the Code
Retrieval screen, press and release the
M button.
„
The Main Menu displays.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight Battery/
Alternator Monitor, then press the
button.
ENTER
„
The
Battery/Alternator
Menu displays.
Monitor
3. Use the UP
and DOWN
buttons,
as necessary, to highlight Battery
Monitor, then press the ENTER
button.
„
A “One moment please” message displays, while the Scan Tool
retrieves the requested information.
4. When the battery check is complete, a
results screen displays the current
Battery Voltage, and indicates whether
or not the voltage is within acceptable
limits. The System Status LEDs provide
a PASS/FAIL indication, as follows:
„
Green = PASS
„
Yellow = Caution/LOW
„
Red = FAIL
5. Press the M button to return to the Main Menu.
To perform an alternator system check:
1. With the Scan Tool on the Code
Retrieval screen, press and release the
M button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Battery/
Alternator Monitor, then press the
ENTER
button.
66
3040c
Additional Functions
VIEWING VEHICLE INFORMATION
„
The
Battery/Alternator
Menu displays.
Monitor
3. Use the UP
and DOWN
buttons,
as necessary, to highlight Alternator
Monitor, then press the ENTER
button.
„
A “One moment please” message
displays, while the Scan Tool
retrieves the requested information.
4. When the battery check is complete, a
results screen displays the current
Battery Voltage.
button to perform
5. Press the ENTER
the alternator check.
„
An instructional screen displays.
6. Press the accelerator pedal to raise
engine speed to 1500~1700 RPM, and
maintain the engine speed for 10 seconds.
„
When engine speed is within the
required range, the alternator test
begins. A progress screen shows
the Engine RPM and Count down
(time remaining until the test is
complete).
7. When the alternator check is complete,
a results screen displays the current
Alternator Voltage, and indicates
whether or not the voltage is within
acceptable limits. The System Status
LEDs provide a PASS/FAIL indication,
as follows:
„
Green = PASS
„
Yellow = Caution/LOW
„
Red = FAIL
„
If the alternator voltage is less than 9 V, the red, yellow and
green SYSTEM STATUS LEDs will flash on and off.
8. Press the M button to return to the Main Menu.
VIEWING VEHICLE INFORMATION
The Scan Tool offers three options for retrieving reference information
for the vehicle under test; Vehicle ID, Available Modules and IPT (Inuse Performance Tracking).
3040c
67
Additional Functions
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. While linked to a vehicle, press the M
button.
„
The “Main Menu” displays.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight Vehicle Info,
then press the ENTER
button.
„
The Vehicle
displays.
Information
menu
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
buttons, as necessary,
and DOWN
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.
1. While linked to a vehicle, press the M button.
68
3040c
Additional Functions
VIEWING VEHICLE INFORMATION
„
The “Main Menu” displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Vehicle
Information, then press the ENTER
button.
„
The Vehicle Information 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
Scan Tool’s display. Use the UP
and
buttons, as necessary, to
DOWN
view the entire list.
6. When you have finished viewing the list of available modules, press
the M button 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. While linked to a vehicle, press the M
button.
„
The “Main Menu” displays.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight Vehicle
Information, then press the ENTER
button.
„
The Vehicle
displays.
Information
menu
3. Use the UP
and DOWN
buttons,
as necessary, to highlight IPT, then
press the ENTER
button.
3040c
69
Additional Functions
VIEWING THE FIRMWARE VERSION - THE TOOL LIBRARY
4. When the retrieval 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.
5. When you have finished viewing the
statistics, press the M button to exit.
VIEWING THE FIRMWARE VERSION
1. While linked to a vehicle, press and
release the M button.
„
The Main Menu displays.
and DOWN
buttons,
2. Use the UP
as necessary, to highlight Firmware
Version in the Main Menu, then press
the ENTER
button.
„
The Firmware Version screen displays.
„
The screen shows the diagnostic
tool’s current firmware version,
bootloader version and database
version.
3. Press the M button to return to the Main
Menu.
THE TOOL LIBRARY
The Tool Library contains valuable reference information for the Scan
Tool. The following functions are available:
„
Monitor Icon – Shows the full names for the I/M MONITOR
STATUS icons shown on the diagnostic tool’s display.
„
DTC Library – Provides access to a
library of OBD2 DTC definitions.
„
LED Meaning – Provides descriptions
of the meaning of the Scan Tool
SYSTEM STATUS LEDs.
1.
While linked to the vehicle, press the M
button.
„
2.
Use the UP
and DOWN
buttons,
as necessary, to highlight Tool Library,
then press the ENTER
button.
„
70
The Main Menu displays.
The Tool Library menu displays.
3040c
Additional Functions
THE TOOL LIBRARY
Viewing Monitor Icon Descriptions
The I/M MONITOR STATUS icons on the Scan Tool’s LCD display
provide an indication of the “Completed / Not Complete” status for all I/M
Monitors supported by the vehicle under test. The Monitor Icon function
displays the full name for each Monitor icon.
1. From the Tool Library menu, use the UP
and DOWN
buttons, as
necessary, to highlight Monitor Icon,
then press the ENTER
button.
„
The Monitor Icon screen displays.
„
The screen shows a list of the 15
Monitor icons, along with the full
name for each icon. Use the UP
and DOWN
necessary, to scroll the list.
buttons, as
2. When you have finished viewing the Monitor icon descriptions, press
the M button to return to the Main Menu.
Using the DTC Library
1. From the Tool Library menu, use the UP
and DOWN
buttons, as
necessary, to highlight DTC Library,
then press the ENTER
button.
„
The Enter DTC screen displays. The
screen shows the code “P0001”,
with the “P” highlighted.
2. Use the UP
and DOWN
buttons,
as necessary, to scroll to the desired
DTC type (P=Powertrain, U=Network,
B=Body, C=Chassis), then press the
DTC button.
„
The selected character displays “solid”,
and the next character is highlighted.
3. Select the remaining characters in the
DTC in the same way, pressing the
DTC button to confirm each character.
When you have selected all the DTC
characters, press the ENTER
button
to view the DTC definition.
„
The Select Manufacturer screen
displays.
4. Use the UP
and DOWN
buttons, as necessary, to highlight
the desired vehicle manufacturer, then press the DTC button.
3040c
71
Additional Functions
THE TOOL LIBRARY
„
A confirmation message shows on
the LCD display.
- If the correct manufacturer is not
and DOWN
shown, use the UP
buttons, as necessary, to
highlight No, then press the
ENTER
button to return to the
list of vehicle manufacturers.
and
- If the correct manufacturer is shown, use the UP
buttons, as necessary, to highlight Yes, then press
DOWN
button to view the DTC definition.
the ENTER
5. When you have finished viewing the DTC
definition, use the UP
and DOWN
buttons, as necessary, to highlight Back,
then press the ENTER
button to return
to the Enter DTC screen and enter
additional DTCs; or, press the M button to
return to the Main Menu.
If a definition for the DTC you
entered is not available, an advisory
message shows on the diagnostic
tool’s display. Use the UP
and
buttons, as necessary, to
DOWN
highlight Back, then press the
ENTER
button to return to the
Enter DTC screen and enter additional DTCs; or, press the M button to return to the Main Menu.
Viewing the LED Meaning
The SYSTEM STATUS LEDs on the Scan Tool provide a visual
indication of the I/M Readiness status of the vehicle under test. The
LED Meaning function provides a description of the meanings of the
green, yellow and red SYSTEM STATUS LEDs.
1. From the Tool Library menu, use the UP
and DOWN
buttons, as
necessary, to highlight LED Meaning,
then press the ENTER
button.
72
„
The LED Meaning screen displays.
„
The screen provides a description of
the meanings of the green, yellow
and red SYSTEM STATUS LEDs.
and DOWN
Use the UP
buttons, as necessary, to scroll the
display.
3040c
Additional Functions
ADJUSTMENTS AND SETTINGS
2. When you have finished viewing the LED meanings, press the M
button to return to the Main Menu.
ADJUSTMENTS AND SETTINGS
You can access the Adjustments and Settings
MENU while the Scan Tool is in “Live Data”
mode. The Scan Tool lets you make several
adjustments and settings to configure the
Scan Tool for your particular needs. The following adjustments and settings are available:
„
Footer: Turns the navigational “footers” at the bottom of most
display screens “on” and “off.”
„
Adjust Brightness: Adjusts the brightness of the display screen.
„
Audible Tone: Turns the Scan Tool’s audible tone “on” and “off.”
When turned “on,” a tone sounds each time a button is pressed.
„
Select Language: Sets the display language for the Scan Tool to
English, French or Spanish.
„
Unit of Measurement: Sets the Unit of Measurement for the Scan
Tool’s display to USA or Metric.
„
Hotkeys Legends: Shows functional descriptions for the diagnostic
tool’s hotkeys.
Accessing the Adjustments and Settings
Menu
1. While linked to the vehicle, press and
release the M button.
„
The “Main Menu” displays.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight Tool
Settings, then press the ENTER
button.
„
The Tool Setting Menu displays.
3. Make adjustments and settings as
described in the following paragraphs.
Disabling Navigational Footers
Navigational “footers” are shown at the bottom of most display
screens. They show which hotkey to press to return to the
topmost menu for the current function.
3040c
73
Additional Functions
ADJUSTMENTS AND SETTINGS
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Footer in the
Tool Settings menu, then press the
ENTER
button.
„
The Footer screen displays.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight On of Off as
desired.
3. When the desired option is selected,
button to save
press the ENTER
your changes are return to the Tool
Settings menu.
To exit the Footer screen and
return to the Main Menu without
making changes, press the M button.
Adjusting Display Brightness
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Adjust
Brightness in the Menu, then press the
ENTER
button.
„
The Adjust Brightness screen displays.
„
The Adjust Brightness field shows
the current brightness setting, from
1 - 4.
2. Press the UP
button to decrease the
brightness of the display (make the
display darker).
3. Press the DOWN
button to increase
the brightness of the display (make the
display lighter).
4. When the desired brightness is obtained, press the ENTER
button to save your changes and return to the Tool Settings Menu.
To exit the Adjust Brightness screen and return to the Tool
Settings Menu without making changes, press the M button.
Enabling the Audible Tone
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Audible
Tone in the Tool Settings Menu, then
press the ENTER
button.
74
3040c
Additional Functions
ADJUSTMENTS AND SETTINGS
„
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,
press the ENTER
button to save your
changes and return to the Tool Settings
Menu.
To exit the Audible Tone screen and return to the Tool
Settings Menu without making changes, press the M button.
Selecting the Display Language
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Language
Selection in the Tool Settings menu,
then press the ENTER
button.
„
The Select Language screen displays.
„
The currently selected display language is highlighted.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
display language.
3. When the desired display language is
button to
highlighted, press the ENTER
save your changes and return to the Tool Settings Menu (shown in the
selected display language).
To exit the Select Language screen and return to the Tool
Settings Menu without making changes, press the M
button.
Setting the Unit of Measurement
and DOWN
buttons,
1. Use the UP
as necessary, to highlight Unit of
Measurement in the Tool Settings
Menu, then press the ENTER
button.
„
The Unit of Measurement screen
displays.
„
The currently selected Unit of
Measurement is highlighted.
2. Use the UP
and DOWN
buttons,
as necessary, to highlight the desired
Unit of Measurement.
3040c
75
Additional Functions
ADJUSTMENTS AND SETTINGS
3. When the desired Unit of Measurement value is selected, press the
button to save your changes and return to the Tool
ENTER
Settings Menu.
To exit the Unit of Measurement screen and return to the
Tool Settings Menu without making changes, press the M
button.
Viewing Hotkey Legends
1. Use the UP
and DOWN
buttons,
as necessary, to highlight Hotkey
Legends in the Tool Settings menu,
then press the ENTER
button.
„
The Hotkey
displays.
„
The screen shows a functional
description of each of the diagnostic
tool’s hotkeys.
Legends
screen
2. When you have finished viewing the
Hotkey Legends, press the ENTER
button to return to the Tool Settings
menu.
Exiting the Tool Settings Menu
„
76
Press the M button to return to the Main Menu.
3040c
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
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
3040c
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
77
Generic (Global) OBD2 PID List
Tool
Display
EQ Ratio 14
Unit
-
Value
X.XXX
EQ Ratio 21
-
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
78
V
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 1 - Sensor 4 Equivalence
Ratio
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
Monitor Status this Driving Cycle
Engine Run Time while MIL ON
Bank 1 - Sensor 1
3040c
Generic (Global) OBD2 PID List
Tool
Display
O2S B1 S1
mA
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
3040c
Unit
mA
Value
X.XXX
PID Description
Bank 1 - Sensor 1 O2S Current
V
V
mA
X.XXX
X.XXX
X.XXX
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
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
79
Generic (Global) OBD2 PID List
Tool
Display
O2S Location
OBD Support
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
O2S42
OBD2
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
Oxygen Sensor, Bank 4, Sensor 2
OBD Requirements
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
80
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
3040c
Generic (Global) OBD2 PID List
Tool
Display
Veh Speed
Warm-up DTC
Clr
3040c
Unit
km/h
/
mph
-
Value
XXX / XXX
XXX
PID Description
Vehicle Speed Sensor
# Warm-ups since DTC Cleared
81
Vehicle Applications - ABS
VEHICLE APPLICATIONS – MAKES COVERED
The diagnostic tool has the ability to retrieve and erase ABS codes.
Vehicle Makes supported by the diagnostic tool are shown below.
Please visit www.innova.com for a complete list of vehicles covered.
ACURA
AM GENERAL
BUICK
CADILLAC
CHEVROLET
CHRYSLER
DAEWOO
DODGE
FORD
GENERAL MOTORS
GEO
GMC
HONDA
HUMMER
3040c
JEEP
LEXUS
LINCOLN
MERCURY
OLDSMOBILE
PLYMOUTH
PONTIAC
RAM
SAAB
SATURN
SCION
SRT
TOYOTA
82
Glossary
GLOSSARY OF TERMS AND ABBREVIATIONS
INTRODUCTION
This Glossary contains definitions for abbreviations and terms you may
find in this manual or in your vehicle service manual.
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
System Status – An indication of whether or not a vehicle’s emissionsrelated system are operating properly and are ready for Inspection and
Maintenance testing.
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 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).
3040c
83
Glossary
GLOSSARY OF TERMS AND ABBREVIATIONS
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”)
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.
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
84
3040c
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, 7 days a week)
All others: (714) 241-6802 (6:00 AM-6:00 PM, 7 days a week)
FAX: (714) 241-3979 (24 hr.)
Web: www.innova.com
3040c
85
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