All Wheel Drive Module (AWD)

C1078-TIRE REVOLUTIONS RANGE PERFORMANCE



- When Monitored:
Continuous.

- Set Condition:
Programmed value for tire size is not within acceptable range.





NOTE: Make sure all tire pressure's are correct before continuing with this diagnostic procedure.

1. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENT

NOTE: Make sure all tire/wheel sizes match and are at the correct tire pressure before continuing with this test.

1. Ignition on, engine not running.
2. With the scan tool, read DTCs in the ABS Module.

Are there any ABS DTCs present?

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure.

No

- Go To 2

2. CHECK FOR A DTC C1078-TIRE REVOLUTIONS RANGE PERFORMANCE

NOTE: This DTC must be active for the results of this test to be valid.

1. Ignition on, engine not running.
2. With the scan tool, read and record DTCs.
3. With the scan tool, erase DTCs.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read and record DTCs.

Does the scan tool display: C1078-TIRE REVOLUTIONS RANGE PERFORMANCE?

Yes

- Go To 3

No

- Go To 4

3. INCORRECT VALUE PROGRAMMED INTO TIPM





1. Verify the correct tire/wheel information is programmed in the TIPM.

Is the correct value programmed in the TIPM according to the chart?

Yes

- Test complete.
- Perform the AWD Control Module VERIFICATION TEST. AWD Control Module Verification Test.

No

- Program the correct Tire/Wheel information in the TIPM.
- Perform the AWD Control Module VERIFICATION TEST. AWD Control Module Verification Test.

4. INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
4. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the AWD Control Module VERIFICATION TEST. AWD Control Module Verification Test.

No

- Test Complete.