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Using the Scan Tool
CODE RETRIEVAL PROCEDURE
7
Retrieving and using Diagnostic Trouble Codes (DTCs) fo
r
troubleshooting vehicle operation is only one part of an
overall diagnostic strategy.
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. Always refer to the vehicle's service manual
for detailed testing instructions.
Check your vehicle thoroughly before performing
any test.
ALWAYS observe safety precautions whenever working on a
vehicle.
1. Turn the ignition off.
2. Locate the vehicle's 16-pin Data Link
Connector (DLC).
Some DLCs have a plastic cover
that must be removed before
connecting the Scan Tool cable
connector.
If the Scan Tool is ON, turn it OFF
BEFORE connecting the Scan
Tool to the DLC.
3. Connect the Scan Tool 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°.
If you still have problems, check the DLC on the vehicle and on
the Scan Tool.
4. Turn the ignition on. DO NOT start the engine.
5. When the Scan Tool is properly connected to the vehicle’s DLC, the
unit automatically turns ON.
If the unit does not power on automatically, it may indicate there
is no power present at the vehicle’s DLC connector. Check the
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.
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