The power mirror system consists of the following components:

Each of the outside rearview mirrors contains two motors. The vertical motor operates the mirror in the up and down directions, and the horizontal motor operates the mirror in the left and right directions. Each of the outside rearview mirror motors are circuit breaker protected. The outside rearview mirror switch is a four position directional switch: Up, Down, Left and Right. The mirror select switch is a three position switch: L for left, Off for none, and R for right.

Power Mirror System Operation

The outside rearview mirror switch receives power through the battery positive voltage circuit from the PWR MIR 10A Fuse. The power mirror switch also receives a ground from G301. The four positions of the direction switch have dual switch contacts. Each of the contacts are connected to opposing sides of the appropriate power mirror motors through the selector switch. The selector switch completes these circuits depending on the position of the selector switch, L or R.

If the selector switch is placed in the L position and the up switch is depressed, battery positive voltage will be supplied to the left outside rearview mirror vertical motor through the left mirror motor down control circuit and ground through the left mirror motor left control circuit. If the down switch is depressed, battery positive voltage will be supplied to the left outside rearview mirror vertical motor through the left mirror motor left control circuit and ground through the left mirror motor down control circuit.

The remainder of the mirror functions operate in the same manner as described above. Placing the power mirror switch in opposing positions, left/right or up/down, will reverse the polarity to the mirror motor, reversing the direction of movement.

Heated Mirrors

Battery positive voltage is applied at all times to the coil and switch side of the rear window defogger relay. When the rear defogger switch is placed in the ON position, a class 2 signal circuit is sent to the body control module (BCM). The BCM then applies a ground to the rear window defogger relay. This energizes and allows battery positive voltage to be applied through the HTD MIRROR fuse to the heated mirrors. The ground for the driver side heated mirror is supplied from G301 and for the passenger heated mirror from G302.