NVG 136-NP4 (One Speed Automatic)

Circuit Description
The transfer case shift control module senses rear to front slip, a difference of rear to front propshaft speed, attempts to correct the difference by turning on the motor to apply torque to the front wheels.
Conditions for Setting the DTC
The transfer case shift control module is unable to correct sensed slip for 10 consecutive seconds. This DTC may set in conjunction with DTC C0305.
Action Taken When the DTC Sets
^ All clutch activation (slip control) 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
^ Current DTC
The transfer case shift control module will clear the DTC if the condition for setting the DTC no longer exists.
^ History DTC
- Once 100 consecutive ignition cycles without a fault present.
- You issue a scan tool CLEAR CODES command.
Diagnostic Aids
An intermittent problem may be caused by a poor connection, break in the wire insulation exposing the internal wire, or a wire that is broken inside the insulation.
Test Description
The number(s) refer to the step number(s) on the diagnostic table.
2. This test determines whether the transfer case shift control module has electronic control of the encoder motor.
3. This test determines the internal integrity of the transfer case shift control module circuitry.
5. This step determines if the transfer case is mechanically working properly.