Power Mirror Switch: Description and Operation
The power mirror switch circuitry is connected to battery current through a fuse in the IPM on a fused B(+) circuit so that the power mirrors remain
operational regardless of the ignition switch position. A rotary joystick selector switch has three positions, one to select the right mirror, one to select the
left mirror, and a center Off position. After the right or left mirror is selected, the joystick is moved to move the selected mirror Up, Down, Right or Left.
In vehicles without Memory Mirrors the power mirror switch circuitry controls the battery current and ground feeds to each of the four (two in each
mirror head) power mirror motors. In vehicles with Memory Mirrors the mirror switch connects to the driver power mirror module. The driver memory
mirror module uses the mirror switch inputs to control the battery current and ground feeds to driver mirror motor and sends a CAN Bus message to the
passenger mirror module. The passenger mirror module controls the battery current and ground feeds to passenger mirror motors based on the CAN bus
message from the driver memory module.