Diagnostic Strategies

Differential Function Test

NOTE: Before doing the Differential Function Test, the following conditions must be present.
^ No DTCs detected
^ Engine is OFF
^ The VTM-4 control unit must be initialized

1. Connect the HDS to the DLC.
2. Turn the ignition switch ON, and confirm that the temperature of the differential oil is between 20°C (68°F) and 60°C (140°F) with the HDS.
3. Turn the ignition switch OFF with the shift lever in P.
4. Lift up the vehicle so all four wheel are off the ground.
5. Remove the rear wheels.
6. Release the parking brake.
7. Turn the ignition switch ON.
8. Select MISCELLANEOUS TEST, then select the LEFT CLUTCH ELECTROMAGNETIC COIL TEST with the HDS, and follow the screen prompts. If the results are NORMAL, the left clutch is OK, go to step 9. If the results are ABNORMAL, replace the rear differential.
9. Select MISCELLANEOUS TEST, then select the RIGHT CLUTCH ELECTROMAGNETIC COIL TEST with the HDS, and follow the screen prompts. If the results are NORMAL, the right clutch is OK. If the results are ABNORMAL, replace the rear differential.