DESCRIPTION
The control switch for the power mirrors is located on the drivers door trim panel.
OPERATION
The power mirrors are connected to battery feed 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 optional memory system, each mirror also contains both a horizontal and a vertical motor position sensor. One motor and drive controls mirror up-and-down movement, and the other controls right-and-left movement.
An optional driver side outside electrochromic mirror is able to automatically change its reflectance level. This mirror is controlled by the circuitry of the automatic day/night inside rear view mirror. A thin layer of electrochromic material between two pieces of conductive glass make up the face of the mirror. Two photocell sensors on the inside rear view mirror are used to monitor light levels and adjust the reflectance of both the inside and driver side outside mirrors. This change in reflectance helps to reduce the glare of headlamps approaching the vehicle from the rear.
The motors which operate the mirrors are part of the mirror assembly and cannot be serviced separately.
Any diagnosis of the power mirror system should begin with the use of the DRB III(R) diagnostic tool. For information on the use of the DRB III(R), refer to BODY DIAGNOSTIC PROCEDURES .
For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS .
An automatic dimming inside day/night rear view mirror and an automatic dimming driver side outside rear view mirror is an available option.
The automatic day/night mirror is able to automatically change its reflectance. A thin layer of electrochromic material between two pieces of conductive glass make up the face of the mirror. Two photocell sensors are used to monitor light levels and adjust the reflectance of the mirror to reduce the glare of headlamps approaching the vehicle from the rear.
The ambient photocell sensor faces forward, to detect the outside light levels. A second sensor faces rearward to detect the light level received through the vehicles back window. When the difference between the two light levels becomes too great (the light level received at the rear of the mirror is much higher than that at the front of the mirror), the mirror begins to darken.
The mirror switch allows the driver a manual control of whether the automatic dimming feature is operational. When AUTO is selected a small Light-Emitting Diode (LED), to the right of the mirror switch, is illuminated. The automatic dimming feature will only operate when the ignition switch is in the On position. The mirror also senses the backup lamp circuit, and will automatically disable its self-dimming feature whenever the transmission gear selector is in the Reverse position.
Note. The mirror always defaults to an ON state upon ignition.
The driver side automatic dimming mirror is standard with the automatic dimming inside mirror. The signal to control the dimming of that mirror is generated by the automatic day/night inside rear view mirror circuitry. That signal is then delivered to the driver side outside rear view mirror on a hard wired circuit.
The automatic day/night mirror cannot be repaired. If faulty or damaged, the entire inside rear view mirror assembly must be replaced.
Both the right and left power outside mirrors are controlled by a single multifunction switch unit located on the driver side front door trim panel. The power mirror switch unit includes a three-position rocker selector switch and one momentary multi-directional platform rocker switch.
The power mirror switch is integral to the Driver Door Module (DDM). The power mirror switch cannot be repaired or adjusted and, if inoperative or damaged, the entire DDM unit must be replaced.
The power mirror selector switch is moved right (right mirror control), left (left mirror control), or center to turn the power outside mirror system off. When the selector switch is in the right mirror control or left mirror control position, the platform rocker switch will activate the mirror in the up , down, left or right positions based on the corresponding actuation. When the selector switch is in the Off position, depressing any of the directional switches will not change either mirror position. This feature protects against any inadvertent mirror actuation.
See also:
• BODY DIAGNOSTIC PROCEDURES