Power Mirror Switch: Description and Operation

POWER MIRROR SWITCH
The mirror switch on the door trim panel operates both the outside rear view mirrors. On vehicles equipped with Memory/Heated Seats, the Memory Heated Seat Mirror Module (MHSMM) activates the mirror motors in recall mode.

Position sensing potentiometers are built into each mirror's vertical and horizontal motor assembly These potentiometers provide a sense voltage to the MHSMM that indicates where the actual location of each mirror is. If a memory position is set, the values of the potentiometers at that location are stored in memory.

Fig. 1 Memory and Heated Seat Switches:

Memory Selector Switch:

MEMORY SET SWITCH
The memory selector switch is mounted on the drivers seat cushion side shield, within easy reach of the driver. This switch provides a way to set new and recall preset positions of seat, seat recliner, and the side view mirror. There are three separate switches incorporated into the memory set switch. The memory position set switch and memory position one and two switches.

The memory set switch cannot be repaired or adjusted. If one switch is damaged or faulty the entire memory set switch must be replaced.

When the memory set switch is depressed, a resistance multiplexed signal is sent to the memory/ heated seat module via hard wired connections. The memory/heated seat module than receives this hard-wired input and moves the power seat track/side view mirror according to the preset position. When the memory system is in set mode a chime will be generated by the body control module.

See the owner's manual in the vehicle glove box for more information on the features, use and operation of the memory switch.