C145F

C145F-AWD SYSTEM TEMPORARILY DISABLED - OVERTEMPERATURE

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Ignition on.

- Set Condition:
The AWD Control Module detects an overheat condition due to excessive difference in speed across the ECC from hard driving conditions (Mud, Sand, Snow, 2WD Chassis dynamometer etc.).





Always perform the AWD Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview.

Diagnostic Test

1. 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

- Diagnose and repair the DTC(s).

No

- Go to 2


2. DTC IS ACTIVE
NOTE: If C1456, C145A or C145D has set along with this DTC, diagnose those DTC(s) first before continuing.

Ignition on, engine not running.
With the scan tool, select View DTCs.
Is the status Active for this DTC?

Yes

- Go to 3
- Perform AWD Control Module VERIFICATION TEST.AWD Control Module Verification Test

No

- Go to 5

3. VERIFY SET CONDITION
NOTE: Check with customer on driving terrain (e.g. mud, sand, snow) for set condition.

With the scan tool, erase DTC's.
Test drive vehicle on dry paved road.
With the scan tool, read DTC's.
Is the status Active for this DTC?

Yes

- Go to 4

No

- Test Complete.
- Perform AWD Control Module VERIFICATION TEST.AWD Control Module Verification Test

4. AWD CONTROL MODULE

NOTE: Before continuing, check the AWD Control Module harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.
Were there any problems found?

Yes

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

No

- Replace AWD Control Module.
- Perform AWD Control Module VERIFICATION TEST.AWD Control Module Verification Test

5. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
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 AWD Control Module VERIFICATION TEST.AWD Control Module Verification Test

No

- Test Complete.