C0367

DTC C0367

Circuit Description
The front axle control circuit consists of an electric motor actuator, which engages and disengages the front axle. The front axle actuator's motor consists of a Permanent Magnetic (PM) motor, a worm gear controlled plunger, a front axle switch and an electronic control circuit all within the actuator assembly.
The front axle actuator has four circuits connected to it, a front axle feed circuit, front axle ground circuit, front uncle control circuit, and a front axle switch circuit.
Whenever a shift to AUTO 4WD, 4HI, or 4LO is requested, the automatic transfer case control module engages the front axle by grounding the front axle control circuit through a current limiting driver. This DTC detects a shorted actuator, or a short to 12 V on the Front Axle Control Circuit.

Conditions for Setting the DTC
^ The system will try to engage the front axle. If it can not engage the front axle, the system will not attempt it again during that ignition cycle.
^ The transfer case shift control module reads back the front axle output as a high voltage when a low voltage is expected.

Action Taken When the DTC Sets
^ All shifting for 4WD and AUTO 4WD mode will be disabled.
^ The SERVICE 4WD indicator 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 cycle without a fault present.
^ History DTCs can be cleared using a scan tool.





Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Tests the operation of the front axle switch.
3. Tests the electrical control of the front axle switch.
4. Tests the Front Axle Control circuit for a short to voltage.
5. Inspects for poor connections at the front axle switch/actuator.
6. Inspects for poor connections at the harness connector of the transfer case shift control module.