C0374

DTC C0374

Circuit Description
The transfer case shift control module senses rear to front slip, a difference of rear to front wheel speed, and attempts to correct the difference by activating the encoder motor, to apply more torque to the front wheels.

DTC Descriptor
This diagnostic procedure supports this DTC:
DTC C0374 General System Malfunction

Conditions for Running the DTC
^ The ignition is ON.
^ The system voltage is 9 - 16 volts.

Conditions for Setting the DTC
The transfer case shift control module is unable to correct sensed slip for 10 consecutive seconds.

Action Taken When the DTC Sets
^ All shifts to Auto 4WD mode is disabled. If the current mode is Auto 4WD, the system does not allow any further adaptive events, correcting for wheel slip.
^ SERVICE 4WD indicator remains illuminated for the remainder of the current ignition cycle.

Conditions for Clearing the DTC
^ A history DTC clears after 100 consecutive ignition cycles without a fault present.
^ Use a scan tool in order to clear history and current DTCs.

Steps 1-9:

Test Description
These numbers correspond to the step numbers on the diagnostic table.
3. This step helps determine if the DTC set due to a mechanical or an electrical fault.
4. This step tests the integrity of the motor control circuit.
5. This step determines whether the encoder motor is moving to the proper position.