Rear Differential Function Test

Rear Differential Function Test

NOTE: Before doing the Differential Function Test, the following conditions must be present.
^ No DTCs detected.
^ Engine is not running.
^ The VTM-4 control unit must be initialized.

1. Connect the HDS to the DLC.
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the VTM-4 control unit. If it doesn't go to the DLC circuit troubleshooting.
4. Confirm that the temperature of the differential fluid is between 68°F (20°C) and 140°F (60°C) with the HDS.
5. Turn the ignition switch OFF with the shift lever in the P position.
6. Release the parking brake.
7. Raise the vehicle on the lift so all four wheels are off the ground.
8. Remove the rear wheels.
9. Turn the ignition switch ON (II).
10. 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.
11. 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.