Shift Control Switch Indicator Lamps Inoperative - One or More

Transfer Case Shift Control Switch Indicator Lamps Inoperative - One or More






Switch Indicator Lamps Do Not Light-One or More

Circuit Description
The indicator lamps circuit consists of 3 individual lamps contained inside respective buttons. This assembly is the transfer case shift-control switch, with the following indicators:
^ 2HI
^ 4HI
^ 4LO
When the ignition switch is placed in the RUN position, current is provided to the switch assembly. The transfer case shift control module provides a ground for the indicators when a particular gear is active or when the transfer case is in transition.
Through solid state circuitry located inside the switch assembly voltage can be regulated to provide less illumination when the headlamps or parking lights are turned ON.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step helps to determine intermittent conditions.
3. This step helps to determine if the transfer case range changes with the press of all of the transfer case shift control switch buttons.
4. This step determines if there is a faulty indicator inside the transfer case shift control switch assembly.
5. This step repairs an open in the suspect indicator control circuit.