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 Descriptor
DTC C0394 06: Rear Axle Coupling Solenoid Temperature Sensor Circuit Short to Ground or OpenDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
AWD Fluid Temperature Sensor Signal | C0394 06 | C0394 06 | -- | -- |
AWD Fluid Temperature Sensor Low Reference | -- | C0394 06 | -- | -- |
Circuit/System Description
The rear differential clutch control module (CCM) provides a power and ground circuits to the temperature sensor. When the temperature of the module is determined to be beyond its limits, the CCM will temporarily disable the rear drive system.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
An open or short to ground is detected on the temperature sensor circuits.
Action Taken When the DTC Sets
One or more of the following actions may occur:
| • | All Wheel Drive Off (AWD Disabled), DIC message |
| • | Service All Wheel Drive (Service AWD), DIC message |
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 X1 harness connector at the rear differential clutch control module .
- Ignition ON, verify a test lamp does not illuminate between the signal circuit terminal 2 and ground:
- Ignition OFF, test for infinite resistance between the signal circuit terminal 2 and ground:
- Test for 310-113K ohms between the signal circuit terminal 2 and the low reference circuit terminal 4.
- If all circuits test normal, replace the rear differential clutch control module.
| ⇒ | If the test lamp illuminates, test the signal circuit for a short to voltage. |
| ⇒ | If less than the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the clutch assembly. |
| ⇒ | If less than the specified range, test both circuits for a short together. If the circuits test normal, replace the differential clutch drum assembly. |
| ⇒ | If greater than the specified range, test both circuits for an open/high resistance. If the circuits test normal, replace the differential clutch drum assembly. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for rear differential clutch control module replacement, setup, and programming |
