next-generation-obdii-can-scan-tool-autolink-al519.pdf

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Table of Contents
1.
2.
SAFETY PRECAUTIONS AND WARNINGS .............................................. 1
GENERAL INFORMATION .......................................................................... 2
2.1 O
N
-B
OARD
D
IAGNOSTICS
(OBD) II
............................................................. 2
2.2 D
IAGNOSTIC
T
ROUBLE
C
ODES
(DTC
S
)
........................................................ 2
2.3 L
OCATION OF THE
D
ATA
L
INK
C
ONNECTOR
(DLC)
.................................... 3
2.4 OBD II R
EADINESS
M
ONITORS
.................................................................... 4
2.5 OBD II M
ONITOR
R
EADINESS
S
TATUS
......................................................... 5
2.6 OBD II D
EFINITIONS
.................................................................................... 6
2.7 OBD II M
ODES OF
O
PERATION
.................................................................... 7
USING THE SCAN TOOL ............................................................................ 10
3.1 T
OOL
D
ESCRIPTION
.................................................................................... 10
3.2 S
PECIFICATIONS
.......................................................................................... 12
3.3 A
CCESSORIES
I
NCLUDED
............................................................................. 12
3.4 N
AVIGATION
C
HARACTERS
........................................................................ 12
3.5 K
EYBOARD
.................................................................................................. 13
3.6 P
OWER
........................................................................................................ 13
3.7 DTC L
OOKUP
............................................................................................. 13
3.8 S
YSTEM
S
ETUP
............................................................................................ 15
3.9 A
BOUT
......................................................................................................... 24
3.10 V
EHICLE
C
OVERAGE
.................................................................................. 24
3.11 P
RODUCT
T
ROUBLESHOOTING
.................................................................... 25
REVIEW DATA ............................................................................................. 27
OBDII DIAGNOSTICS ................................................................................. 29
5.1 R
EADING
C
ODES
......................................................................................... 31
5.2 E
RASING
C
ODES
.......................................................................................... 33
5.3 L
IVE
D
ATA
.................................................................................................. 35
5.4 V
IEWING
F
REEZE
F
RAME
D
ATA
................................................................. 47
5.5 R
ETRIEVING
I/M R
EADINESS
S
TATUS
......................................................... 48
5.6 O2 M
ONITOR
T
EST
..................................................................................... 55
5.7 O
N
-B
OARD
M
ONITOR
T
EST
........................................................................ 56
5.8 C
OMPONENT
T
EST
...................................................................................... 60
5.9 V
IEWING
V
EHICLE
I
NFORMATION
.............................................................. 61
5.10 M
ODULES
P
RESENT
.................................................................................... 63
5.11 C
ODE
B
REAKER
.......................................................................................... 63
READY TEST ................................................................................................ 65
6.1 G
ENERAL
I
NFORMATION
............................................................................ 65
6.2 R
EADY TEST APPLICATION
.......................................................................... 65
6.3 LED
AND
T
ONE
I
NTERPRETATION
.............................................................. 68
PRINT DATA ................................................................................................. 70
WARRANTY AND SERVICE ...................................................................... 72
8.1 L
IMITED
O
NE
Y
EAR
W
ARRANTY
................................................................ 72
8.2 S
ERVICE
P
ROCEDURES
................................................................................ 72
3.
4.
5.
6.
7.
8.
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
the connector. If the DLC cannot be found, refer to the vehicle‟s
service manual for the location.
3
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
operated under specific conditions before the monitor is ready. These
monitors are termed non-continuous monitors. For different ignition
type engines, the available monitors are different too.
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