Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC C0393 06: Rear Differential Clutch Control Coil CircuitDTC C0393 0B: Rear Differential Clutch Control Coil Circuit Current Above Threshold
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
AWD Supply Voltage | C0393 06 | C0393 06 | C0393 0B | -- |
Low Reference | C0393 06 | C0393 06 | C0393 0B | -- |
Circuit/System Description
The rear differential clutch control module (CCM) provides a power and ground switching circuits to the coil. The coil receives current from the CCM through PWM low side driver, and converts that signal into torque through the clutch to the rear tires when all wheel drive (AWD) is requested.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
| • | An open is detected on the high or low coil circuits. |
| • | A short to ground is detected on the high or low coil circuit. |
Action Taken When the DTC Sets
One or more of the following actions may occur:
| • | All Wheel Drive Off (AWD Disabled). |
| • | Service All Wheel Drive (Service AWD). |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present. |
| • | The DTC is not detected in 40 consecutive drive cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
All-Wheel Drive Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the X2 harness connector at the clutch control module .
- Ignition ON, verify a test lamp does not illuminate between the following circuits and ground:
- Ignition OFF, test for infinite resistance between the following circuit terminals and ground:
- Test for less than 5.0 ohms between the low reference circuit terminal 3 and the voltage supply terminal 5.
- If all circuits test normal, replace the CCM.
| • | Low Reference terminal 3 |
| • | Voltage terminal 5 |
| ⇒ | If the test lamp illuminates, test the appropriate circuit for a short to voltage. |
| • | Low Reference terminal 3 |
| • | Voltage terminal 5 |
| ⇒ | If less than the specified value, test the appropriate circuit for a short to ground. |
| ⇒ | If greater than the specified range, test the appropriate circuit for an open/high resistance. If the circuits test normal, replace the rear wheel driver module clutch housing. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for CCM replacement, setup, and programming
