Initial Inspection - 2-Speed Torque-on-Demand

Inspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart:

Visual Inspection Chart

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the concern is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
^ check that the program card is correctly installed.
^ check the connections to the vehicle.
^ check the ignition switch position.

5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.

6. NOTE: Before carrying out the on-demand self test, make sure that:
^ ignition is in RUN.
^ all doors are closed.
^ brake pedal is not pressed.
^ transmission in NEUTRAL.
^ 4x4 AUTO mode is selected (or the last mode selected before starting the self test).

Carry out the diagnostic tool data link test. if the diagnostic tool responds with:
^ CAN circuit fault; all electronic control units no response/not equipped, refer to Information Bus.
^ No response/not equipped for 4WD control module, GO to Pinpoint Test G. Test G: No Communication With the 4WD Control Module
^ System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the 4WD control module self-test.

7. If the DTCs retrieved are related to the concern, go to the 4WD Control Module Diagnostic Trouble Code (DTC) Index to continue diagnostics. Four Wheel Drive (4WD) Systems - 2-Speed Torque-On-Demand