Equus 3130 - Scan Tool – OBD2 - Manual (Page 24)

22 OBD2
E
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 loca-
tion of the problem. This information is found in the vehicle's
service manual. Always refer to the vehicle's service manual
for detailed testing instructions.
Check your vehicle thoroughly before performing
any test. See Before You Begin on page 20 for
details.
ALWAYS observe safety precautions whenever working on a
vehicle. See Safety Precautions on page 3 for more infor-
mation.
1. Turn the ignition off.
2. Locate the vehicle's 16-pin Data Link
Connector (DLC). See page 5 for con-
nector location.
Some DLCs have a plastic cover
that must be removed before con-
necting the Scan Tool cable con-
nector.
If the Scan Tool is ON, turn it OFF
by pressing the POWER/LINK
button BEFORE connecting the
Scan Tool to the DLC.
3. Connect the Scan Tool cable connector to the vehicle’s DLC. The
cable connector is keyed and will only fit one way.
■ If you have problems connecting the cable connector to the DLC,
rotate the connector 180° and try again.
■ If you still have problems, check the DLC on the vehicle and on
the Scan Tool. Refer to your vehicle’s service manual to properly
check the vehicle’s DLC.
4. When the Scan Tool’s cable connector is
properly connected to the vehicle’s DLC,
the unit automatically turns ON, and
the display shows instructions for linking
to the vehicle’s on-board computer.
Retrieving and using Diagnostic Trouble Codes (DTCs) for
troubleshooting vehicle operation is only one part of an
overall diagnostic strategy.