Inspection and Verifications

1. Verify the customer concern by operating the A4WD.

2. Visually inspect for obvious signs of mechanical and electrical damage; refer to the following:

Visual Inspection:

Mechanical Switch(es)

Electrical
Fuse(s)
Damaged wiring harness
Loose or corroded connector(s)
Lamp(s)
Circuitry

3. If the concern remains after the inspection, connect the scan tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:

- check that the program card is properly installed.

- check battery voltage.

- check the connections to the vehicle.

- check the ignition switch position.

4. If the scan tool still does not communicate with the vehicle, refer to the scan tool manual.

5. Perform the DATA LINK DIAGNOSTIC TEST. If the scan tool responds with:

- CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP,

- NO RESP/NOT EQUIP for generic electronic module (GEM), go to Pinpoint Test D. Test D: No Communication With the GEM Module

- SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the GEM.

6. If the DTCs retrieved are related to the concern, go to the GEM/CTM Diagnostic Trouble Code (DTC) Index to continue diagnostics.

7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart A4WD to continue diagnostics. A4WD