Diagnostic Test
- ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENT
- Ignition on, engine not running.
- With the scan tool, select View DTCs in the ABS Module.
Are there any ABS DTCs present?
Yes
- Perform the appropriate diagnostic procedure. Refer to DIAGNOSIS AND TESTING .
No
- Go To 2
- POWER CONTROL MODULE (PCM) DTCS PRESENT
- DTC IS ACTIVE
- VERIFY SET CONDITION NOTE:
Check with customer on driving terrain (e.g. mud, sand, snow) for set condition.
- With the scan tool, erase DTCs.
- Test drive vehicle on dry paved road.
- With the scan tool, read DTCs.
Is the status Active for this DTC?
Yes
- Replace the Transfer Case in accordance with the Service Information. Refer to MP2010 REMOVAL or MP3023 REMOVAL .
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Test Complete.
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- INTERMITTENT WIRING AND CONNECTORS
- Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
- Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
- Look for the data to change or for the DTC to reset during the wiggle test.
- While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times.
- Look for the data to change other than as expected or for the DTC to reset.
Were there any problems found?
Yes
- Repair as necessary.
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Test complete, the condition or conditions that originally set this DTC are not present at this time.