Pinpoint Test P: RDU (Rear Drive Unit) Motor Phase Circuits: Notes
WARNING: This page is about a different variant/trim than selected.
DTC's C0095:07, C0095:18, C0095:19, C00945:44, C90095:71, C0095:92 and C0095:99
Refer to All Wheel Drive (AWD) for schematic and connector information.
Normal Operation and Fault Conditions
The rear drive unit contains a three phase reversible motor. The motor actuates a clutch in the RDU to enable or disable AWD. The AWD module controls the motor by supplying power on the RDMC X circuits. The motor position is communicated back to the AWD module on the RDMP X circuits. When the AWD module powers up, the AWD Module will cycle the motor from hard stop (clutch fully released) to the clutch kiss point. The kiss point is the maximum clutch apply point where 0 torque is transmitted through the clutch.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C0095:07 | 4WD/AWD Rear Differential Unit Actuator "A": Mechanical Failures | This DTC is set when the AWD Module attempts to connect the PTU and apply the RDU clutch, but there is a failure that keeps the synchronization of the PTU and RDU from occurring. Diagnose the more specific DTC first. |
| C0095:18 | 4WD/AWD Rear Differential Unit Actuator "A": Circuit Current Below Threshold | This DTC sets in continuous memory and on-demand if the RDU motor circuit detects low current flow when commanded. |
| C0095:19 | 4WD/AWD Rear Differential Unit Actuator "A": Circuit Current Above Threshold | This DTC sets in continuous memory and on-demand if the RDU motor circuit detects high current flow when commanded. |
| C0095:71 | 4WD/AWD Rear Differential Unit Actuator "A": Actuator Stuck | The AWD module will set this DTC when the motor position sensors do not change when the motor is commanded. Resolve all motor position sensor DTC before addressing this DTC. |
| C0095:92 | 4WD/AWD Rear Differential Unit Actuator "A": Performance or Incorrect Operation | The AWD module will set this DTC when the motor position sensors do not change in a predictable manner when the motor is commanded. Resolve all motor position sensor DTC before addressing this DTC. |
| C0095:99 | 4WD/AWD Rear Differential Unit Actuator "A" : Exceeded Learning Limit | This DTC is set when the kisspoint learn fails to complete successfully. Resolve all motor position sensor DTC before addressing this DTC. |
Possible Causes
- Wiring, terminals or connectors
- RDU assembly
- RDU jumper harness
- AWD module