Interior Mirrors: Notes
DESCRIPTION
The interior power mirror system is comprised of the following components:
| 1. | Refer to BODY CONTROL MODULE (BCM) . |
| 2. | Refer to COMBINED REAR VIEW MIRROR MODULE (CRVMM) WITH INTERIOR REARVIEW MIRROR . |
On vehicles equipped with the customer programmable Electrochromatic (EC) mirror, the EC feature automatically changes reflectance of the internal and external mirror (if equipped) to provide maximum night time vision, while giving relief from glare caused by headlights from the rear of the vehicle during night driving. The windshield mounted EC mirror is packaged with the CRVMM assembly.
Besides the mirror glass, the EC mirror includes two photocell sensors, the electronic mirror control circuitry and the hardware necessary to communicate as a Local Interface Network (LIN) slave node on the LIN data bus.
OPERATION
The EC mirror can be turned ON and OFF through the settings in the radio. The EC mirror will always turn ON by default at the onset of a new ignition ON cycle. The automatic dimming mirror circuitry also senses the backup lamp circuit, and will automatically disable its self-dimming feature whenever the transmission gear selector is in the REVERSE position.
The ambient photocell sensor of the mirror faces forward, to detect the outside light levels through the windshield glass. A second headlamp photocell sensor is used to detect the light level received at the rear window side of the mirror. When the mirror control circuitry detects that the difference between the two sensed light levels has become 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. A thin layer of EC material between two pieces of conductive glass make up the face of the mirror.