Autel AutoLink AutoLink AL319 Code Reader Installation guide

Autel AutoLink AutoLink AL319 Code Reader Installation guide
Table of Contents
1.
2.
3.
4.
5.
6.
SAFETY PRECAUTIONS AND WARNINGS .............................................. 1
GENERAL INFORMATION .......................................................................... 2
2.1 ON-BOARD DIAGNOSTICS (OBD) II ............................................................. 2
2.2 DIAGNOSTIC TROUBLE CODES (DTCS) ........................................................ 2
2.3 LOCATION OF THE DATA LINK CONNECTOR (DLC) .................................... 3
2.4 OBD II READINESS MONITORS .................................................................... 4
2.5 OBD II MONITOR READINESS STATUS ......................................................... 5
2.6 OBD II DEFINITIONS .................................................................................... 6
2.7 OBD II MODES OF OPERATION .................................................................... 7
USING THE SCAN TOOL ............................................................................ 10
3.1 TOOL DESCRIPTION .................................................................................... 10
3.2 SPECIFICATIONS .......................................................................................... 11
3.3 ACCESSORIES INCLUDED............................................................................. 11
3.4 NAVIGATION CHARACTERS ........................................................................ 12
3.5 KEYBOARD .................................................................................................. 12
3.6 POWER ........................................................................................................ 12
3.7 SYSTEM SETUP ............................................................................................ 12
3.8 ABOUT ......................................................................................................... 22
3.9 VEHICLE COVERAGE .................................................................................. 22
3.10 PRODUCT TROUBLESHOOTING.................................................................... 23
OBDII DIAGNOSTICS ................................................................................. 25
4.1 READING CODES ......................................................................................... 26
4.2 ERASING CODES .......................................................................................... 29
4.3 VIEWING FREEZE FRAME DATA ................................................................. 30
4.4 RETRIEVING I/M READINESS STATUS......................................................... 31
4.5 VIEWING VEHICLE INFORMATION .............................................................. 34
4.6 EXITING THE OBDII TEST.......................................................................... 35
I/M READINESS ONE-CLICK FUNCTION .............................................. 36
5.1 READY TEST MODE .................................................................................... 37
5.2 SCAN TOOL MODE ...................................................................................... 39
WARRANTY AND SERVICE ...................................................................... 42
6.1 LIMITED ONE YEAR WARRANTY ................................................................ 42
6.2 SERVICE PROCEDURES ................................................................................ 42
1. Safety Precautions and Warnings
To prevent personal injury or damage to vehicles and/or the scan
tool, read this instruction manual first and observe the following
safety precautions at a minimum whenever working on a vehicle:










Always perform automotive testing in a safe environment.
Wear safety eye protection that meets ANSI standards.
Keep clothing, hair, hands, tools, test equipment, etc. away from
all moving or hot engine parts.
Operate the vehicle in a well ventilated work area: Exhaust gases
are poisonous.
Put blocks in front of the drive wheels and never leave the vehicle
unattended while running tests.
Use extreme caution when working around the ignition coil,
distributor cap, ignition wires and spark plugs. These
components create hazardous voltages when the engine is
running.
Put the transmission in PARK (for automatic transmission) or
NEUTRAL (for manual transmission) and make sure the parking
brake is engaged.
Keep a fire extinguisher suitable for gasoline/chemical/ electrical
fires nearby.
Don‟t connect or disconnect any test equipment while the
ignition is on or the engine is running.
Keep the scan tool dry, clean, free from oil/water or grease. Use a
mild detergent on a clean cloth to clean the outside of the scan
tool, when necessary.
1
2. General Information
2.1 On-Board Diagnostics (OBD) II
The first generation of On-Board Diagnostics (called OBD I) was
developed by the California Air Resources Board (ARB) and
implemented in 1988 to monitor some of the emission control
components on vehicles. As technology evolved and the desire to
improve the On-Board Diagnostic system increased, a new generation
of On-Board Diagnostic system was developed. This second generation
of On-Board Diagnostic regulations is called "OBD II".
The OBD II system is designed to monitor emission control systems
and key engine components by performing either continuous or
periodic tests of specific components and vehicle conditions. When a
problem is detected, the OBD II system turns on a warning lamp (MIL)
on the vehicle instrument panel to alert the driver typically by the
phrase of “Check Engine” or “Service Engine Soon”. The system will
also store important information about the detected malfunction so
that a technician can accurately find and fix the problem. Here below
follow three pieces of such valuable information:
1) Whether the Malfunction Indicator Light (MIL) is
commanded 'on' or 'off';
2) Which, if any, Diagnostic Trouble Codes (DTCs) are stored;
3) Readiness Monitor status.
2.2 Diagnostic Trouble Codes (DTCs)
OBD II Diagnostic Trouble Codes are codes that are stored by the
on-board computer diagnostic system in response to a problem found
in the vehicle. These codes identify a particular problem area and are
intended to provide you with a guide as to where a fault might be
occurring within a vehicle. OBD II Diagnostic Trouble Codes
consists of a five-digit alphanumeric code. The first character, a letter,
identifies which control system sets the code. The other four
characters, all numbers, provide additional information on where the
DTC originated and the operating conditions that caused it to set. Here
below is an example to illustrate the structure of the digits:
2
DTC Example
P0202
Systems
B=Body
C=Chassis
P=Powertrain
U=Network
Identifying specific
malfunctioning
section of the
systems
Code Type
Generic (SAE):
P0, P2, P34-P39
B0, B3
C0, C3
U0, U3.
Manufacturer Specific:
P1, P30-p33
B1, B2
C1, C2
U1, U2
Sub-systems
1= Fuel and Air Metering
2= Fuel and Air Metering
3= Ignition System or Engine Misfire
4= Auxiliary Emission Controls
5= Vehicle Speed Control and Idle
Controls
6= Computer Output Circuits
7= Transmission Controls
8= Transmission Controls
2.3 Location of the Data Link Connector (DLC)
The DLC (Data Link Connector or Diagnostic Link Connector) is the
standardized 16-cavity connector where diagnostic scan tools
interface with the vehicle's on-board computer. The DLC is usually
located 12 inches from the center of the instrument panel (dash),
under or around the driver‟s side for most vehicles. If Data Link
Connector is not located under dashboard, a label should be there
telling location. For some Asian and European vehicles, the DLC is
located behind the ashtray and the ashtray must be removed to access
3
the connector. If the DLC cannot be found, refer to the vehicle‟s
service manual for the location.
2.4 OBD II Readiness Monitors
An important part of a vehicle‟s OBD II system is the Readiness
Monitors, which are indicators used to find out if all of the emissions
components have been evaluated by the OBD II system. They are
running periodic tests on specific systems and components to ensure
that they are performing within allowable limits.
Currently, there are eleven OBD II Readiness Monitors (or I/M
Monitors) defined by the U.S. Environmental Protection Agency
(EPA). Not all monitors are supported by all vehicles and the exact
number of monitors in any vehicle depends on the motor vehicle
manufacturer‟s emissions control strategy.
Continuous Monitors -- Some of the vehicle components or systems
are continuously tested by the vehicle‟s OBD II system, while others
are tested only under specific vehicle operating conditions. The
continuously monitored components listed below are always ready:
1)Misfire
2)Fuel System
3)Comprehensive Components (CCM)
Once the vehicle is running, the OBD II system is continuously
checking the above components, monitoring key engine sensors,
watching for engine misfire, and monitoring fuel demands.
Non-Continuous Monitors -- Unlike the continuous monitors, many
emissions and engine system components require the vehicle to be
4
operated under specific conditions before the monitor is ready. These
monitors are termed non-continuous monitors and are listed below:
1)
2)
3)
4)
5)
6)
7)
8)
EGR System
O2 Sensors
Catalyst
Evaporative System
O2 Sensor Heater
Secondary air
Heated Catalyst
A/C system
2.5 OBD II Monitor Readiness Status
OBD II systems must indicate whether or not the vehicle‟s PCM‟s
monitor system has completed testing on each component.
Components that have been tested will be reported as “Ready”, or
“Complete”, meaning they have been tested by the OBD II system.
The purpose of recording readiness status is to allow inspectors to
determine if the vehicle‟s OBD II system has tested all the
components and/or systems.
The power-train control module (PCM) sets a monitor to “Ready” or
“Complete” after an appropriate drive cycle has been performed. The
drive cycle that enables a monitor and sets readiness codes to “Ready”
varies for each individual monitor. Once a monitor is set as “Ready”
or “Complete”, it will remain in this state. A number of factors,
including erasing of diagnostic trouble codes (DTCs) with a scan tool
or a disconnected battery, can result in Readiness Monitors being set
to “Not Ready”. Since the three continuous monitors are constantly
evaluating, they will be reported as “Ready” all of the time. If testing
of a particular supported non-continuous monitor has not been
completed, the monitor status will be reported as “Not Complete” or
“Not Ready.”
In order for the OBD monitor system to become ready, the vehicle
should be driven under a variety of normal operating conditions.
These operating conditions may include a mix of highway driving and
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stop and go, city type driving, and at least one overnight-off period.
For specific information on getting your vehicle‟s OBD monitor
system ready, please consult your vehicle owner‟s manual.
2.6 OBD II Definitions
Power-train Control Module (PCM) -- OBD II terminology for the
on-board computer that controls engine and drive train.
Malfunction Indicator Light (MIL) -- Malfunction Indicator Light
(Service Engine Soon, Check Engine) is a term used for the light on
the instrument panel. It is to alert the driver and/or the repair
technician that there is a problem with one or more of vehicle's
systems and may cause emissions to exceed federal standards. If the
MIL illuminates with a steady light, it indicates that a problem has
been detected and the vehicle should be serviced as soon as possible.
Under certain conditions, the dashboard light will blink or flash. This
indicates a severe problem and flashing is intended to discourage
vehicle operation. The vehicle onboard diagnostic system can not turn
the MIL off until necessary repairs are completed or the condition no
longer exists.
DTC -- Diagnostic Trouble Codes (DTC) that identify which section
of the emission control system has malfunctioned.
Enabling Criteria -- Also termed Enabling Conditions. They are the
vehicle-specific events or conditions that must occur within the
engine before the various monitors will set, or run. Some monitors
require the vehicle to follow a prescribed “drive cycle” routine as part
of the enabling criteria. Drive cycles vary among vehicles and for
each monitor in any particular vehicle.
OBD II Drive Cycle -- A specific mode of vehicle operation that
provides conditions required to set all the readiness monitors
applicable to the vehicle to the “ready” condition. The purpose of
completing an OBD II drive cycle is to force the vehicle to run its
onboard diagnostics. Some form of a drive cycle needs to be
performed after DTCs have been erased from the PCM‟s memory or
after the battery has been disconnected. Running through a vehicle‟s
complete drive cycle will “set” the readiness monitors so that future
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faults can be detected. Drive cycles vary depending on the vehicle and
the monitor that needs to be reset. For vehicle specific drive cycle,
consult the vehicle‟s Owner‟s Manual.
Freeze Frame Data -- When an emissions related fault occurs, the
OBD II system not only sets a code but also records a snapshot of the
vehicle operating parameters to help in identifying the problem. This
set of values is referred to as Freeze Frame Data and may include
important engine parameters such as engine RPM, vehicle speed, air
flow, engine load, fuel pressure, fuel trim value, engine coolant
temperature, ignition timing advance, or closed loop status.
2.7 OBD II Modes of Operation
Here is a basic introduction to the OBD II communication protocol.
Mode byte: The first byte in the stream is the mode number. There
are 9 modes for diagnostic requests, so this first byte is from 1 to 9.
The first byte in the response data bytes is this same number plus 64.
For example, a mode 1 request would have the first data byte = 1,
and the response would have the first data byte = 65. Here is a brief
description of the modes:
Mode $01 - Identifies the Powertrain information and shows
current data available to the scan tool. This data includes: DTCs
set, status of on-board tests and vehicle data such as engine RPM,
temperatures, ignition advance, speed, air flow rates, and closed loop
status for fuel system.
Mode $02 - Displays Freeze Frame data. Same data as in mode 1,
but it was captured and stored when a malfunction occurred and a
DTC was set. Some of the PIDs for mode one are not implemented
in this mode.
Mode $03 - Displays the type of powertrain or emission related
DTCs stored by a 5 digit code identifying the faults. There may be
more than one response message if there are more trouble codes than
will fit in the data bytes of the response message, or if there are more
than one ECU computer responding.
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Mode $04 - Used to clear DTCs and Freeze Frame data. This
clears all diagnostic trouble codes that may be set including freeze
frame data and readiness monitors.
Mode $05 - Oxygen Sensor Test Results. This mode displays the
oxygen sensor monitor screen and the test results gathered about the
oxygen sensor.
There are ten numbers available for diagnostics:
1.
2.
3.
4.
5.
6.
7.
8.
9.
$01 Rich-to-Lean O2 sensor threshold voltage
$02 Lean-to-Rich O2 sensor threshold voltage
$03 Low sensor voltage threshold for switch time
measurement
$04 High sensor voltage threshold for switch time
measurement
$05 Rich-to-Lean switch time in ms
$06 Lean-to Rich switch time in ms
$07 Minimum voltage for test
$08 Maximum voltage for test
$09 Time between voltage transitions in ms
Mode $06 - Non-Continuously Monitored Systems test results.
There are typically a minimum value, a maximum value, and a
current value for each non-continuous monitor. This data is optional,
and it is defined by a given vehicle make if it‟s used.
Mode $07 - Request for DTCs (pending) from Continuously
Monitored Systems after a single driving cycle has been
performed to determine if repair has fixed a problem. This is
used by service technicians to verify repair was performed properly
and after clearing diagnostic trouble codes.
Mode $08 - This Special Control Mode requests control of the
on-board system, test, or component bi-directionally (where
applicable). This mode is manufacturer specific.
Mode $09 - Reports vehicle information. This information includes
vehicle VIN number and calibration information stored in the vehicle
ECUs.
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Mode $10 -- Request Emission-Related Diagnostic Trouble
Codes with Permanent Status. This mode is required for all
emissions-related DTCs. The presence of permanent DTCs at an
inspection without the MIL illuminated is an indication that a proper
repair was not verified by the on-board monitoring system.
Table 1: Comparison of AutoLink scan tool series:
Mode
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Mode 7
Mode 8
Mode 9
Mode 10
AutoLink
AL319



AutoLink
AL419










9
AutoLink
AL519










3. Using the Scan Tool
3.1 Tool Description
① OBD II CONNECTOR -- Connects the scan tool to the
vehicle‟s Data Link Connector (DLC).
② LCD DISPLAY -- Indicates test results.
③
GREEN LED – Indicates that engine systems are running
normally (The number of monitors on the vehicle which are
active and performing their diagnostic testing is in the allowed
limit, and no DTCs are present).
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④
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.
⑤
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
DTCs are present. DTCs are shown on the Scan Tool‟s display.
In this case, the MIL lamp on the vehicle‟s instrument panel
will light steady on.
⑥
One-Click I/M Readiness Key – Shortcut for quick
State Emissions readiness check and drive cycle verification.
⑦
ENTER/Exit BUTTON -- Confirms a selection (or action)
from a menu. Or returns to previous menu.
⑧
SCROLL BUTTON – Scrolls through menu items.
⑨ USB CONNECTOR -- Connects the scan tool to the PC for
upgrading.
3.2 Specifications
1)
2)
3)
4)
5)
6)
Display: TFT color display (220 x 176 dpi)
Operating Temperature: 0 to 60°C (32 to 140 F°)
Storage Temperature: -20 to 70°C (-4 to 158 F°)
External Power: 8.0 to 18.0 V power provided via vehicle
battery
Dimensions:
Length
Width
Height
117 mm (4.61”)
72 mm (2.83”)
18 mm (0.71”)
NW: 0.18kg (0.39lb),
GW: 0.21 kg(0.46lb)
3.3 Accessories Included
1)
User’s Manual -- Instructions on tool operations.
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2)
3)
OBD2 cable -- Provides power to tool and communicates
between tool and vehicle.
USB cable -- Allows easy update via a PC and an internet
connection.
3.4 Navigation Characters
Characters used to help navigate the scan tool are:
1) “#” -- Identifies the control module number from which data is
retrieved.
2) “Pd” – Identifies a pending DTC when viewing DTCs.
3.5 Keyboard
No solvents such as alcohol are allowed to clean the keypad or display.
Use a mild nonabrasive detergent and a soft cotton cloth. Do not soak
the keypad as the keypad is not waterproof.
3.6 Power
The scan tool is powered via the vehicle Data Link Connector (DLC).
Just follow the steps below to turn on the scan tool:
1) Locate DLC on vehicle.

A plastic DLC cover may be found for some vehicles and you
need to remove it before plugging the OBD2 cable.
2)
Plug the tool‟s OBD II cable to the vehicle‟s DLC.
3.7 System Setup
The scan tool allows you to make the following adjustments and
settings:
1) Language: Selects the desired language.
2) Work Mode: Sets the I/M readiness working mode.
3) Configure Monitors: Sets the monitors you want to test.
4) Unit of measure: Sets the unit of measure to English or Metric.
5) Key Beep Set: Turns on/off key-press beep.
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6)
7)
8)

Status Beep Set: Turns on/off the I/M Readiness Status beep.
Tool Self-test: Checks if the LCD display, LED lamps and
keyboard are working normally.
Update Mode: Accesses the Update Mode.
Settings of the unit will remain until change to the existing
settings is made.
To enter the Setup menu
When the scan tool is powered on, it displays a Main Screen.
(Figure 3.1)
Figure 3.1
From the Main Screen: Use the SCROLL button to select Setup,
and press the ENTER button. Follow the instructions to make
adjustments and settings as described in the above setup options.
(Figure 3.2)
System Setup
Language
Work Mode
Configure Monitors
Unit of Measure
Key Beep Set
Figure 3.2
13
1/9
Language Setup
 English is the default language.
1)
From System Setup screen, use the SCROLL button to select
Language, and press the ENTER button.
2)
Use the SCROLL button to select the desired language and press
the ENTER button to save your selection and return to previous
screen. We provide three language options currently. (Figure
3.3)
Language
1/3
 English
 Français
 Español
Figure 3.3
Work Mode
From System Setup screen, use the SCROLL button to select Work
Mode, and press the ENTER button. (Figure 3.4 )
Work Mode
1/2
 Scan Tool Mode
 Ready Test Mode
Figure 3.4
The scan tool can work in two modes: Scan Tool Mode and Ready
Test Mode. The former is used to check the I/M readiness monitor
status before performing OBD II diagnostics; the latter is used to
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perform the I/M readiness monitor status quick-check to determine if
the tested vehicle is ready for an emission test.
Use the SCROLL button to select Scan Tool Mode or Ready Test
Mode and press the ENTER button to save your selection and return
to previous screen.
1)
Scan Tool Mode
Scan Tool Mode is the default work mode. In this mode, after the
vehicle‟s monitors have run and completed their diagnosis and testing,
the scan tool will turn to OBDII diagnostic procedures. The detailed
functions are described below.
The monitor status refreshes every 2 minutes.
2)
Ready Test Mode
In this mode, after the vehicle‟s monitors have run and completed
their diagnosis and testing, the scan tool will return to the previous
screen. So it is mostly used to check the monitors‟ status.
The monitor status refreshes every 2 minutes.
Configure Monitors
From System Setup screen, use the SCROLL button to select
Configure Monitors, and press the OK button.(Figure 3.5 )
Configure Monitors
Allowed INC Monitors
Reset Factory Default
Previous Menu
Figure 3.5
15
1/3
In this menu, you could configure the number of monitors to pass
diagnosis, and restore the default settings.
1)
Allowed INC Monitors
From Configure Monitors screen, use the SCROLL button to select
Allowed INC Monitors, and press the ENTER button.
Emissions tests vary depending on the geographic or regional area in
which the vehicle is registered. So the scan tool provides a more
flexible way to meet different standards, which allows the user to
select 0, 1, 2, 3 „not complete‟ monitors in test.
2)
Reset Factory Default
From Configure Monitors screen, use the SCROLL button to select
Reset Factory Default, and press the ENTER button.
It will restore the default configuration settings, which are compatible
with most vehicle inspection programs, but it will also delete any
customized settings.
The tool will display an information message to ask for your
confirmation. Select Yes to proceed and No to exit without change.
Unit of Measure
 Metric is the default measurement unit.
1)
From System Setup screen, use the SCROLL button to select
Unit of Measure and press the ENTER button.
2)
From Unit of Measure screen, use the SCROLL button to select
the desired unit of measurement. (Figure 3.6 )
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Unit of Measure
1/2
 English
 Metric
Figure 3.6
3)
Press the ENTER button to save your selection and return to
previous menu.
Key Beep Set
This function allows you to turn on/off the build-in speaker for Key
pressing.
 The default setting is Beep On.
1)
From System Setup screen, use the SCROLL button to select
Key Beep Set and press the ENTER button.
2)
From Key Beep Set menu, use the SCROLL button to select
Beep ON or Beep OFF to turn on/off the beep. (Figure 3.7)
Key Beep Set
1/2
 Beep ON
 Beep OFF
Figure 3.7
3)
Press the ENTER button to save your selection and return to
previous menu.
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Status Beep Set
This function allows you to turn on/off the build-in speaker for the
LEDs in diagnostic testing. Different audio tone corresponds to
different LED lamp. This function is invaluable when working in
bright areas where LED illumination alone is not sufficient.
1)
From System Setup screen, use the SCROLL button to select
Status Beep Set and press the ENTER button.
2)
From Status Beep Set menu, use the SCROLL button to select
Beep ON or Beep OFF to turn on/off the beep.
Status Beep Set
1/2
 Beep ON
 Beep OFF
Figure 3.8
3)
Press the ENTER button to save your selection and return to
previous menu.
Tool Self-test
The Tool Self-test function checks if the display, LED lamps and
keyboard are working properly.
A. Display test
The Display Test function checks if the LCD display is working
normally.
1) From System Setup screen, use the SCROLL button to select
Tool Self-test, and press the ENTER button.
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2)
Select Display Test from Tool Self-test menu and press the
ENTER button to start test. (Figure 3.9 )
Tool Self-test
1/4
Display Test
Keyboard Test
LED Test
Previous Menu
3)
4)
B.
Figure 3.9
Look for missing spots in the red, green, blue, black and white
LCD display.
When completed, press the ENTER button to exit.
Keyboard Test
The Keyboard Test function verifies if the keys are functioning
properly.
1)
Use the SCROLL button to select Keyboard Test from the
Tool Self-test menu, and then press the ENTER button.
2)
Press any key to start test. When you press a key, the key name
should be observed on the display. If the key name does not
show up, then the key is not functioning properly. (Figure 3.10)
Keyboard Test
Press any key to
start test
key:
Double [OK] to return
Figure 3.10
3)
Double press ENTER to return to previous menu.
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C.
LED Test
The LED Test function verifies if the I/M Readiness LED indicator
lamps are functioning properly.
1)
Use the SCROLL button to select LED Test from the Tool
Self-test menu, and then press the ENTER button.
2)
In the LED Self-test menu, use the SCROLL button to select
one or more LED lamps to check. The LED should turn on or
off according to the selected commands.
LED Self-test
1/4
RED LED ON
YELLOW LED ON
GREEN LED ON
Previous Menu
Figure 3.11
Update Mode
This function allows you to update the scan tool software and DTC
library through a computer.

To update your scan tool, you need the following items.
AutoLink AL319
A PC or laptop with USB ports
A USB cable
1)
Download the programs to be updated to your computer.
2)
Run the MaxiLink Tool Kit in your computer. (Figure 3.12)
3)
Connect the scan tool to your computer through the USB cable
provided.
20
4)
From System Setup screen in scan tool, use the SCROLL
button to select Update Mode, and press the ENTER button.
5)
Select the programs to be updated in your computer. There are
two types of programs: operating system and DTC library.
(Figure 3.12)
6)
Click Update in the MaxiLink Tool Kit window to begin
updating.
Figure 3.12
7)
During the update procedure, the scan tool displays a message
“Update Program. Please wait…”.
8)
When the update has finished, the scan tool will display a
message “Program Update has been done!”
9)
Restart the scan tool to finish the whole update.
NOTE: When you made a wrong choice and the scan tool is unable
to work properly, you may need to update the programs. To hold
ENTER button and power on the scan tool, you will enter the
Update Mode forcedly. Then follow the update procedure to refresh
the program.
21
To exit the Setup menu
Use the SCROLL button to select Previous Menu from the System
Setup screen, and press the ENTER button to return to Main
Screen.
3.8 About
The About function allows viewing of some important information
such as serial number and software version number of the scanner.
1)
From Main Screen, use the SCROLL button to select About
and press the ENTER button; wait for the About screen to
appear.
2)
View tool information on screen.(Figure 3.13)
Figure 3.13
3.9 Vehicle Coverage
The Autolink AL319 OBDII/EOBD Scanner is specially designed to
work with all OBD II compliant vehicles, including those equipped
with next-generation protocol -- Control Area Network (CAN). It is
required by EPA that all 1996 and newer vehicles (cars and light
trucks) sold in the United States must be OBD II compliant and this
includes all Domestic, Asian and European vehicles.
A small number of 1994 and 1995 model year gasoline vehicles are
OBD II compliant. To verify if a 1994 or 1995 vehicle is OBD II
22
compliant, check the Vehicle Emissions Control Information (VECI)
Label which is located under the hood or by the radiator of most
vehicles. If the vehicle is OBD II compliant, the label will designate
“OBD II Certified”. Additionally, Government regulations mandate
that all OBD II compliant vehicles must have a “common”
sixteen-pin Data Link Connector (DLC).
For your vehicle to be OBD II compliant it must have a 16-pin DLC
(Data Link Connector) under the dash and the Vehicle Emission
Control Information Label must state that the vehicle is OBD II
compliant.
3.10 Product Troubleshooting
This part describes problems that you may encounter while using the
scan tool.
Vehicle Linking Error
A communication error occurs if the scan tool fails to communicate
with the vehicle‟s ECU (Engine Control Unit). You need to do the
following to check up:
 Verify that the ignition is ON.
 Check if the scan tool‟s OBD II connector is securely
connected to the vehicle‟s DLC.
 Verify that the vehicle is OBD2 compliant.
 Turn the ignition off and wait for about 10 seconds. Turn the
ignition back to on and continue the testing.
 Verify the control module is not defective.
Operating Error
If the scan tool freezes, then an exception occurs or the vehicle‟s
ECU (Engine Control Unit) is too slow to respond to requests. You
need to do the following to reset the tool:
 Reset the scan tool.
 Turn the ignition off and wait for about 10 seconds. Turn the
ignition back to on and continue the testing.
23
Scan tool doesn’t power up
If the scan tool won‟t power up or operates incorrectly in any other
way, you need to do the following to check up:
 Check if the scan tool‟s OBD II connector is securely connected
to the vehicle‟s DLC;
 Check if the DLC pins are bent or broken. Clean the DLC pins if
necessary.
 Check vehicle battery to make sure it is still good with at least 8.0
volts.
LED lamps not working
If you turn on the scan tool and perform the I/M Readiness test but
the LED lamps are not working, there may be several possible causes,
including bad connection and ignition off. In this case, follow these
steps to check the scan tool.

Make sure the OBD II cable is connected to the DLC securely.

Verify the ignition key is in the KOER position.

Run the LED Test in the System Setup menu. (see 3.7 System
Setup). If the scan tool did not pass this test, there is a problem
with the LED lamp. Please contact Autel Tech Support or your
local selling agent.
Can’t use the diagnostics function
When you select the Diagnostics function in the main screen and it
only shows the I/M Readiness status, the scan tool may be in Ready
Test Mode. All you have to do is to select Scan Tool Mode in the
System Setup menu. (see 3.7 System Setup)
24
4. OBDII Diagnostics
When more than one vehicle control module is detected by the
scan tool, you will be prompted to select the module where the
data may be retrieved. The most often to be selected are the
Power train Control Module [PCM] and Transmission Control
Module [TCM].
CAUTION: Don’t connect or disconnect any test equipment with
ignition on or engine running.
1)
2)
3)
4)
5)
Turn the ignition off.
Locate the vehicle‟s 16-pin Data Link Connector (DLC).
Plug the scan tool cable connector into the vehicle‟s DLC.
Turn the ignition on. Engine can be off or running.
Use the SCROLL button to select Diagnostics from the Main
Screen.(Figure 3.1)
6) Press the ENTER button to wait for the Menu to appear. A
sequence of messages displaying the OBDII protocols will be
observed on the display until the vehicle protocol is detected.






If the scan tool fails to communicate with the vehicle’s
ECU (Engine Control Unit) more than three times, a
“LINKING ERROR!” message shows up on the display.
Verify that the ignition is ON;
Check if the scan tool‟s OBD II connector is securely
connected to the vehicle‟s DLC;
Verify that the vehicle is OBD2 compliant;
Turn the ignition off and wait for about 10 seconds. Turn the
ignition back to on and repeat the procedure from step 5.
If the “LINKING ERROR” message does not go away,
then there might be problems for the scan tool to
communicate with the vehicle. Contact your local
distributor or the manufacturer’s customer service
department for assistance.
25
7) View a summary of system status (MIL status, DTC counts,
Monitor status) on screen. (Figure 4.1 ) Wait a few seconds or
press any key for Diagnostic Menu (Figure 4.3) to come up.
System Status
MIL Status
Codes Found
Monitors N/A
Monitors OK
Monitors INC
ON
6
3
3
5
Figure 4.1

If more than one module is detected, you will be prompted to
select a module before testing. (Figure 4.2 )
Control Module
1/2
Engine
Module $A4
Figure 4.2

Use the SCROLL button to select a module and press the
ENTER button to confirm.
4.1 Reading Codes
 Reading Codes can be done with the key on engine off (KOEO)
or with the key on engine running (KOER).
 Stored Codes are also known as “hard codes” or “permanent
codes”. These codes cause the control module to illuminate the
malfunction indicator light (MIL) when emission-related fault
occurs.
26
 Pending Codes are also referred to as “maturing codes” or
“continuous monitor codes”. They indicate problems that the
control module has detected during the current or last driving
cycle but are not considered serious yet. Pending Codes will not
turn on the malfunction indicator lamp (MIL). If the fault does
not occur within a certain number of warm-up cycles, the code
clears from memory.
1) Use SCROLL button to select Read Codes from Diagnostic
Menu and press ENTER button.
Diagnostic Menu
1/7
Read Codes
Erase Codes
View Freeze Frame
I/M Readiness
Vehicle Info
Figure 4.3
2) Use the SCROLL button to select Stored Codes or Pending
Codes from the Read Codes menu and press the ENTER button.
Read Codes
1/4
Stored Codes
Pending Codes
Permanent Codes
Previous Menu
Figure 4.4

If there is not any Diagnostic Trouble Code, the display
indicates “No (pending) codes are stored in the module!”
Wait a few seconds or press any key to return to previous
screen.
27
NOTE: Permanent Codes function is available for merely
vehicles supporting the CAN protocols.
3)
View DTCs and their definitions on screen. Press ENTER button
to return to previous screen.
1/1
P1633
$10
BUICK
Ignition 0 Switch Circuit
Figure 4.5

4)
The control module number, sequence of the DTCs, total
number of codes detected and type of codes (Generic or
Manufacturer specific, Stored or Pending codes) will be
observed on the upper right hand corner of the display.
If more than one DTC is found, use the SCROLL button to
check all the codes.

If retrieved DTCs contain any manufacturer specific or
enhanced codes, a “Manufacturer specific codes are found!
Press any key to select vehicle make!” message comes up
prompting you to select vehicle manufacturer to view DTC
definitions. Use SCROLL button to select manufacturer and
then press ENTER button to confirm.
Vehicle Manufacturer 1/28
BUICK
BMW
CADILLAC
CHEVROLET
CHRYSLER
FORD
Figure 4.6
28

5)
If the manufacturer of your vehicle is not listed, use the
SCROLL button to select Other and press the ENTER
button.
Select Previous Menu from the Read Codes screen, and press
ENTER button to return to previous menu.
4.2 Erasing Codes
CAUTION: Erasing the Diagnostic Trouble Codes may allow the
scan tool to delete not only the codes from the vehicle’s on-board
computer, but also “Freeze Frame” data and manufacturer specific
enhanced data. Further, the I/M Readiness Monitor Status for all
vehicle monitors is reset to Not Ready or Not Complete status. Do
not erase the codes before the system has been checked completely
by a technician.
NOTE: Erasing codes does not mean that trouble codes in ECU
have been eliminated completely. As long as there is fault with the
vehicle, the trouble codes keeps on presenting.
 This function is performed with key on engine off (KOEO). Do
not start the engine.
1) Use the SCROLL button to select Erase Codes from
Diagnostics Menu and press the ENTER button. (Figure 4.3)
2) A warning message comes up asking for your confirmation.
Erase Codes
Erase trouble codes!
Are you sure?
YES
NO
Figure 4.7
29

If you do not want to proceed with erasing codes, use
SCROLL button to select NO to exit. A message of
“Command Cancelled!” show ups. Wait a few seconds or
press any key to return to Diagnostic Menu.
3) Press the ENTER button to confirm.

If the codes are cleared successfully, an “Erase Done!”
confirmation message shows on the display.
Erase Codes
Erase Done!
Press any key to con.
Figure 4.8

If the codes are not cleared, then an “Erase Failure. Turn
Key on with Engine off!” message appears.
Erase Codes
Erase Failure.
Turn Key on with
Engine Off!
Press any key to con.
Figure 4.9
4.3 Viewing Freeze Frame Data
Freeze Frame Data allows the technician to view the vehicle‟s
operating parameters at the moment a DTC (Diagnostic Trouble Code)
is detected. For example, the parameters may include engine speed
(RPM), engine coolant temperature (ECT), or vehicle speed sensor
30
(VSS) etc. This information will aid the technician by allowing the
parameters to be duplicated for diagnostic and repair purposes.
1)
To view freeze frame data, use the SCROLL button to select
View Freeze Frame from Diagnostic Menu and press the
ENTER button. (Figure 4.3)
2)
Wait a few seconds while the scan tool validates the PID MAP.
3)
If retrieved information covers more than one screen, use the
SCROLL button, as necessary, until all the data have been
shown up.
…………View Freeze Frame
DTCFRZF
FUELSYS1
FUELSYS2
LOAD_PCT (%)
ECT(℃)
SHRTFT1 (%)
2.
P1633
OL
-0.0
-40
99.2
Figure 4.10

4)
If there is no freeze frame data available, an advisory message
“No freeze frame data stored!” shows on the display.
Press ENTER button to return to previous screen.
4.4 Retrieving I/M Readiness Status
I/M Readiness function is used to check the operations of the
Emission System on OBD2 compliant vehicles. It is an excellent
function to use prior to having a vehicle inspected for
compliance to a state emissions program.
CAUTION - By clearing trouble codes you also clear the readiness
status for the individual emission system readiness tests. In order
to reset these monitors, the vehicle must be driven through a
31
complete drive cycle with no trouble codes in memory. Times for
reset vary depending on vehicle.
Some latest vehicle models may support two types of I/M
Readiness tests:
A. Since DTCs Cleared - indicates status of the monitors since the
DTCs are erased.
B. This Drive Cycle - indicates status of monitors since the
beginning of the current drive cycle.
An I/M Readiness Status result of “NO” does not necessarily
indicate that the vehicle being tested will fail the state I/M
inspection. For some states, one or more such monitors may be
allowed to be “Not Ready” to pass the emissions inspection.
 “OK” -- Indicates that a particular monitor being checked has
completed its diagnostic testing.
 “INC” -- Indicates that a particular monitor being checked has
not completed its diagnostic testing.
 “N/A” -- The monitor is not supported on that vehicle.
1) Use the SCROLL button to select I/M Readiness from
Diagnostic Menu and press ENTER button. (Figure 4.3)
2) Wait a few seconds while the scan tool validates the PID MAP.
3)
If the vehicle supports both types of tests, then both types will be
shown on the screen for selection.
……………I/M Readiness
Since DTCs Cleared
This Drive Cycle
Figure 4.11
32
1/2.
4) Use the SCROLL button, as necessary, to view the status of the
MIL light (“ON” or “OFF) and the following monitors:
 Misfire monitor -- Misfire monitor
 Fuel System Mon -- Fuel System Monitor
 Comp. Component -- Comprehensive Components Monitor
 Catalyst Mon -- Catalyst Monitor







Htd Catalyst -- Heated Catalyst Monitor
EVAP System Mon -- Evaporative System Monitor
Sec Air System -- Secondary Air Monitor
A/C Refrig Mon -- A/C system Monitor
Oxygen Sens Mon -- O2 Sensors Monitor
Oxygen Sens Htr --O2 Sensor Heater Monitor
EGR System Mon -- EGR System Monitor
…………Since DTCs Cleared
MIL Status
Misfire Monitor
Fuel System Mon
Comp. Component
Catalyst Mon
Htd Catalyst
1
OFF
OK
OK
OK
INC
N/A
Figure 4.12
5) If the vehicle supports readiness test of “This Drive Cycle”, a
screen of the following displays:
…………..This Drive Cycle
MIL Status
Misfire Monitor
Fuel System Mon
Comp. Component
Catalyst Mon
Htd Catalyst
Figure 4.13
33
OFF
OK
N/A
OK
INC
N/A
1.
6) Press the ENTER button to return to Diagnostic Menu.
4.5 Viewing Vehicle Information
The Vehicle Info. function enables retrieval of Vehicle
Identification No. (VIN), Calibration ID Nos. (CINs),
Calibration Verification Nos. (CVNs) and In-use Performance
Tracking on 2000 and newer vehicles that support Mode 9.
1) Use SCROLL button to select Vehicle Info. from the Diagnostic
Menu and press ENTER button. (Figure 4.3)
2) An advisory message comes up to remind you. Wait a few
seconds or press any key to continue.
Vehicle Info.
Turn key on
with engine off !
Press any key to con.
Figure 4.14
3) Wait a few seconds while the scan tool reads vehicle information.
Vehicle Info.
Reading info…
- Please Wait -
Figure 4.15
34

If the vehicle does not support this mode, a message shows on
the display warning that the mode is not supported.
4) From Vehicle Info. Menu, use the SCROLL button to select an
available item to view and press the ENTER button.
Vehicle Info.
3/4
Vehicle ID Number
Calibration ID
Cal. Verf. Number
Previous Menu
Figure 4.16
5) View retrieved vehicle information on screen.
Cal. Verf. Number
CVN1:
BB BA A0 78
Figure 4.17
6) Select Previous Menu from the Vehicle Info screen, and press
ENTER button to return to the previous menu.
4.6 Exiting the OBDII Test
1)
To exit OBDII test, use SCROLL button to select Previous
Menu from Diagnostic Menu and press ENTER/EXIT button.
(Figure 4.3)
2)
A warning message comes up asking your confirmation. Press
ENTER button to exit.
35
5. I/M Readiness One-Click Function
The I/M Readiness One-Click Key on the scan tool shows you
how quickly and easily a novice user can check the I/M
readiness status, MIL state, and DTCs. By simple clicking on
this key, the scan tool automatically checks the emission-related
monitoring systems and reads DTCs. All data shows on one
screen, which provides a simple profile of vehicle at a glance.
There are two modes to show I/M readiness monitor status. You can
configure work modes in the Setup menu. (see 3.7 System Setup)
1) Scan Tool Mode
Scan Tool Mode is the default work mode. In this mode, after the
vehicle‟s monitors have run and completed their diagnosis and testing,
the scan tool will turn to OBDII diagnostic procedures.
NOTE: Only in this mode can you perform the OBDII diagnostics.
2) Ready Test Mode
In this mode, after the vehicle‟s monitors have run and completed
their diagnosis and testing, the scan tool will return to the previous
screen. So it is ONLY used to check the emission-related monitors‟
status.
NOTE: This function reads off the real time data of emission-related
monitoring systems readiness status every two minutes. Once the scan
tool has finished other operations, for example, clearing trouble
codes, and the real time data been changed, the I/M Readiness Status
indication will be changed accordingly. In order to reset these
monitors, the vehicle must be driven through a complete drive cycle.
Times for reset vary depending on vehicle.
36
5.1 Ready Test Mode
Repairs to the emissions-control systems of a 1996 or newer vehicle
cause the vehicle‟s computer (ECU) memory to be cleared. The
vehicle must go through a drive cycle to allow the ECU to perform a
series of tests to ensure that the repair was successful, and before a
state mandated emissions test can be conducted.
Modern vehicles lack equipment to indicate whether the tests have
been completed. With AutoLink AL319, you don‟t have to bring the
vehicle back to the repair shop for retest if all required tests by the
ECU are completed.
In the Ready Test Mode, you could easily check the I/M Readiness
status to determine whether an OBD II vehicle is ready for an
emission test.
To enter this mode, simply press the One-Click I/M Readiness Key
at anytime. Or, while the scan tool in Ready Test Mode, select
Diagnostics in the Main Screen. (Figure 3.1) If the scan tool is idle,
it will show the result immediately. If it is busy, it will wait till the
current procedure finished. After viewing the status, press I/M
Readiness One-Click Key or ENTER button to exit, which takes a
few seconds and please be patient.
You will get the information screen as below.
Figure 5.1
37
“OK”
-- Indicates that a particular monitor being checked
has completed its diagnostic testing.
“INC” -- Indicates that a particular monitor being checked
has not completed its diagnostic testing.
“N/A”
-- The monitor is not supported on the vehicle.
The LED and audio tone indications are as interpreted below:
LED Interpretation
The green and red LEDs provide an easy way to check if
emission-related monitoring systems complete their self-diagnostic
testing.
1)
GREEN LED – Indicates that engine systems are “OK” and
operating normally (the number of Monitors supported by the
vehicle which have run and performed their self-diagnostic
testing is in the allowed limit).
2)
RED LED – Indicates that the number of Monitors supported by
the vehicle which have run and performed their self-diagnostic
testing is out of the allowed limit.
Audio Tone Interpretation
The audio tone could be configured according to the I/M Readiness
Status. This function is invaluable when working in bright areas where
LED illumination alone is not sufficient.
LED Light
Audio Tone
Beep Interval
Green LED
Two long beeps
2 min
Red LED
Beep OFF
38
5.2 Scan Tool Mode
NOTE: Only in this mode can you perform the OBDII diagnostics.
To enter this mode, please follow the steps in 4.4 Retrieving I/M
Readiness Status.
The green, yellow and red LEDs provide a quick way to help you
determine if a vehicle is ready for an Emission Test.
The LED and audio tone indications are as interpreted below:
LED Interpretation
1)
GREEN LED – Indicates that engine systems are “OK” and
operating normally (the number of Monitors supported by the
vehicle which have run and performed their self-diagnostic
testing is in the allowed limit. MIL is off. ).There are no stored
and pending DTCs. The vehicle is ready for an Emissions Test,
and there is a good possibility that it can be certified.
2)
YELLOW LED – With MIL off, there may be three possible
conditions to cause the yellow LED to light.

If a “Stored” Diagnostic Trouble Code is causing the
Yellow LED to light, it is still possible that the vehicle will
be allowed to be tested for emissions and certified.

If a “Pending” Diagnostic Trouble Code is causing the
Yellow LED to light, it is still possible that the vehicle will
be allowed to be tested for emissions and certified.

If the illumination of the Yellow LED is being caused by
monitors that have not completed their diagnostic testing,
then the issue of the vehicle being ready for an Emissions
Test depends on the emissions regulations and laws of your
local area.
39
NOTE: From the code retrieval procedure, determine the status of
each Monitor. Take this information to an emissions professional to
determine (based on your test results) if your vehicle is ready for an
Emissions Test.
3)
RED LED – Indicates there is a problem with one or more of
the vehicle‟s system. A vehicle displaying a red LED is
definitely not ready for an Emissions Test. The red LED is also
an indication that there are DTCs present. The MIL 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 can be performed. It is also suggested that the
vehicle be inspected/repaired before driving the vehicle further.
If the RED LED was obtained, there is a definite problem
present in the system(s). In these cases, you have the following
options:

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.
Audio Tone Interpretation
The audio tone could be configured according to the I/M Readiness
Status. This function is invaluable when working in bright areas
where LED illumination alone is not sufficient.
It is recommended to set the audio tone to Beep ON. For detailed
setup information, please refer to Status Beep Set in 3.7 System
Setup.
40
NOTE: The following audio tone description only works in Scan
Tool mode.
Different audio tone with different LED lights will indicates different
I/M Readiness Status.
LED Light
Audio Tone
Beep Interval
Green LED
Two long beeps
2 min
Yellow LED
short, short, long beep
2 min
Four short beeps
2 min
Red LED
41
6. Warranty and Service
6.1 Limited One Year Warranty
Autel warrants to its customers that this product will be free from all
defects in materials and workmanship for a period of one (1) year from
the date of the original purchase, subject to the following terms and
conditions:
1) The sole responsibility of Autel under the Warranty is limited to
either the repair or, at the option of Autel, replacement of the scan
tool at no charge with Proof of Purchase. The sales receipt may be
used for this purpose.
2) This warranty does not apply to damages caused by improper use,
accident, flood, lightning, or if the product was altered or repaired
by anyone other than the Manufacturer‟s Service Center.
3) Autel shall not be liable for any incidental or consequential
damages arising from the use, misuse, or mounting of the scan tool.
Some states do not allow limitations on how long an implied
warranty lasts, so the above limitations may not apply to you.
4) All information in this manual is based on the latest information
available at the time of publication and no warranty can be made
for its accuracy or completeness. Autel reserves the right to make
changes at any time without notice.
6.2 Service Procedures
If you have any questions, please contact your local store, distributor
or visit our website at www.auteltech.com.
If it becomes necessary to return the scan tool for repair, contact your
local distributor for more information.
42
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