C145F-AWD SYSTEM TEMPORARILY DISABLED - OVERTEMPERATURE

For a complete wiring diagram Refer to Section 8W.

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. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE).

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

Refer to the symptom list and perform any ABS DTC diagnostic procedures before continuing with this test.

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. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)

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

Test Complete.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)

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. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)

Replace AWD Control Module in accordance with Service Information.
Perform AWD Control Module VERIFICATION TEST. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)

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. (Refer to 3 - DIFFERENTIAL & DRIVELINE/ELECTRONICALLY CONTROLLED CLUTCH - STANDARD PROCEDURE)

Test Complete.