Mirrors: Description and Operation

INTRODUCTION
Power Mirror
Power operated outside rear view mirrors are an available factory-installed option on this model.

Automatic Day/Night Mirror
An automatic dimming inside day/night rear view mirror is an available factory-installed option on this model. Following is a general description of this optional equipment.

SYSTEM OPERATION
Power Mirror
The power mirrors are connected to battery feed at all times. Each mirror head contains two electric motors, two drive mechanisms, and the mirror glass. One motor and drive controls mirror up-and-down movement, and the other controls right-and-left movement.

The power mirror assembly cannot be repaired. Only the mirror glass is serviced separately If any other component of the power mirror unit is faulty or damaged, the entire assembly must be replaced.

Power Mirror Switch
Both the right and left power outside mirrors are controlled by a single multi-function switch unit. The switch knob is rotated clockwise (right mirror control) or counterclockwise (left mirror control) to select the mirror to be adjusted. The switch knob is then moved in a joystick fashion to control movement of the selected mirror up, down, right, or left.

The power mirror switch cannot be repaired and, if faulty or damaged, it must be replaced as a complete unit.

Automatic Day/Night Mirror
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. The headlamp sensor faces rearward, to detect the light level received at the rear window side of the mirror. 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 On is selected, the mirror switch is lighted by an integral Light-Emitting Diode (LED). 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 (manual or automatic) gear selector is in the Reverse position.

The automatic day/night mirror cannot be repaired. If faulty or damaged, the entire inside rear view mirror assembly must be replaced.

CIRCUIT OPERATION
Day/Night Mirror
The day/night mirror receives power from circuit L10 when the ignition switch is in the RUN position. This circuit is protected by a 10 amp fuse located in cavity 15 of the fuse block. Circuit Z4 provides ground for the day/night mirror.

When the back-up lamps switch CLOSES, circuit L1 provides a signal to the day/night mirror. The day night mirror turns OFF when the vehicle is in reverse.

Power Mirrors
The power mirrors use a single switch located in the left door trim panel. The feed for the system is supplied on circuit Mi from the 15 amp Ignition-Off Draw (IOD) fuse located in the fuse block cavity 17. This fuse also supplies power for the radio, interior lamps and other components. Grounding for the power mirrors is provided through the Z3 circuit.