Principles Of Operation

Rear View Mirrors - Exterior

Principles of Operation

Exterior Mirrors

The movement of the LH and RH exterior mirror glass is controlled by the exterior mirror control switch and the LH and RH exterior mirror motors. Adjusting the exterior mirror switch to the LH or RH position determines which exterior mirror motor will be controlled. The exterior mirror control switch logic is the selected movement request from the exterior mirror control switch. When the exterior mirror control switch is adjusted to the left, right, up or down position, the exterior mirror control switch will supply voltage and ground to the selected exterior mirror motor to move the exterior mirror glass to the desired position.

The exterior mirrors use a jumper harness between the vehicle wire harness connector and the exterior mirror motor. The exterior mirror jumper harness is integral to the exterior mirror. If a concern with the exterior mirror jumper harness exists and cannot be repaired, a new exterior mirror must be installed.

Heated Exterior Rear View Mirror

The rear window defrost/heated mirror switch controls the operation of the heated exterior rear view mirrors. The heated exterior rear view mirror power is supplied by the rear window defrost/heated mirror relay through Central Junction Box (CJB) fuse 167 (7.5A), which isolates the heated exterior mirrors from the rear window defroster system in the event of a concern.