Description And Operation: Operation

The power operated outside rear view mirrors:

• Are connected to battery current at all times.
• Each mirror head contains two electric motors, two drive mechanisms, an electric heating element and the mirror glass.
• If the vehicle is equipped with the high current door power switch module configuration, hard-wired ground and battery current outputs to each power mirror motor determine whether the horizontal or the vertical motor will be operated and the polarity of those outputs control the direction in which the motor will move the drive unit and mirror glass.
• Power mirror and mirror switch functionality is the same with the low current configuration; however, the driver door power switch module sends power mirror switch status messages over the Local Interface Network (LIN) data bus to the driver front door control module.
• The driver front door control module then controls the high current outputs to the driver door mirror motors or sends electronic request messages over the Controller Area Network (CAN) Interior High Speed (IHS) data bus to the passenger front door control module to control high current outputs to the passenger door mirror motors.

Heated Mirror: 

• The standard equipment power outside rear view mirrors are electrically heated.
• In the high current door power switch module configuration, the heater grid behind each mirror glass is energized whenever the rear window defogger relay is energized by the Power Distribution Center (PDC) in response to electronic defogger switch status messages received over the CAN data bus from the A/C-heater control.
• In the low current door power switch configuration each front door control module responds to the electronic defogger switch status messages received over the CAN data bus from the A/C-heater control to control the high current output to the heater grid of the mirror on the same door as appropriate.
• Refer to DESCRIPTION AND OPERATION .

Dimming: 

• On vehicles equipped with the optional driver side automatic dimming outside rear view mirror, the mirror reflectance is controlled by the driver front door control module based upon hard-wired inputs received from the automatic dimming inside rear view mirror.
• Refer to MIRROR, AUTOMATIC DAY AND NIGHT, DESCRIPTION AND OPERATION .

Blind Spot Monitor (BSM) system: 

• If the vehicle is equipped with the optional BSM system, an LED display unit behind the lower edge of each mirror glass illuminates an amber triangle to indicate to the vehicle operator that an object has been detected by the BSM system.
• The BSM LED display is controlled by the front door control modules based upon electronic messages received from the BSM control module over the CAN data bus.
• Refer to DISPLAY, BLIND SPOT, DESCRIPTION AND OPERATION .