C0357

CIRCUIT DESCRIPTION

The park switch supplies a 12 V input to the module when the vehicle is in PARK. The module uses this input to determine if the vehicle is in PARK/NEUTRAL. If the vehicle is in PARK, the module will not allow a range shift from 2H, 4H, or AUTO (Adapt) mode to 4L range.

This DTC detects voltage on CKT 275 (LT GRN) at the module when the module sees a front or rear propshaft speed signal, or vehicle speed form the VCM/PCM over the Class 2 data bus.

CONDITIONS FOR SETTING THE DTC

The transfer case shift control module detects voltage on CKT 584 at the module when the module sees a front or rear propshaft speed signal, or vehicle speed form the VCM over the Class 2 data bus 10 mph or over for 10 consecutive seconds.

ACTION TAKEN WHEN THE DTC SETS

- Whenever PARK/NEUTRAL was true, the module would believe the transmission was in PARK.
- All range shifts will be disabled.
- The SERVICE indicator (AWD/4WD) lamp will be latched on for the remainder of the current ignition cycle.

CONDITIONS FOR CLEARING THE DTC

- The transfer case shift control module will clear the DTC if the condition for setting the DTC no longer exists.
- A history DTC will clear after 100 consecutive ignition cycles without a fault present.
- History DTCs can be cleared using a scan tool.






TEST DESCRIPTION

The number(s) below refer to the step number(s) on the diagnostic table.

4. This step determines if circuit 275 is shorted to voltage.