Circuit Description
The Service indicator (AWD/4WD) lampis located in the instrument cluster. It receives ignition voltage from a 10 amp. gauge fuse through circuit 39. This circuit also supplies all of the gauges with ignition voltage. The automatic transfer case control module controls the Service indicator (AWD/4WD) lamp by sending the instrument cluster a Class 2 message. This lamp maybe control with the scan tool using the instrument cluster device controls.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Transfer Case Diagnostic System Check performed? | -- | Go to Step 2 | |
2 |
Does the Service 4WD Lamp light? | -- | Go to Step 3 | |
3 | Replace the automatic transfer case control module. Refer to Transfer Case Shift Control Module Replacement . Is the repair complete? | -- | Go to Step 4 | -- |
4 | Reconnect all ATC system components, make sure all the components are properly mounted. Have all the ATC components been reconnected and properly mounted? | -- | Go to Step 5 | -- |
5 | Clear all ATC DTCs. Have all the ATC DTCs been cleared? | -- | -- |
