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 GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
AWD Temperature Sensor Signal Circuit | C0394 06 | C0394 06 | -- | -- |
Low Reference Circuit | -- | 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 fluid in the AWD rear differential 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. |
| • | Ignition voltage is greater than 9 volts. |
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). |
| • | 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
Transfer Case Control Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Ignition OFF, disconnect the harness connector C2 at the rear differential clutch control module .
- Ignition ON, verify a test lamp does not illuminate between the AWD temperature sensor signal circuit terminal 4 and ground.
- Ignition OFF, test for infinite resistance between the following circuit terminals and ground:
- Test for 310-113 K ohms of resistance between the AWD temperature sensor signal circuit terminal 4 and the low reference circuit terminal 2.
- If all circuits test normal, replace the CCM.
| ⇒ | If the test lamp illuminates, test the AWD temperature sensor signal circuit for a short to voltage. |
| • | AWD temperature sensor signal circuit terminal 4 |
| • | Low reference circuit terminal 2 |
| ⇒ | If less than the specified value, test the appropriate circuit for a short to ground. If the circuit tests normal, replace the rear differential. |
| ⇒ | If less than the specified range, test both circuits for a short together. If the circuits test normal, replace the rear differential. |
| ⇒ | If greater than the specified range, test both circuits for an open/high resistance. If the circuits test normal, replace the rear differential. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for CCM replacement, setup, and programming
The temperature sensor and coil internal in the differential, and is replace as an assembly. Refer to Differential Replacement
