DESCRIPTION
Electrochromic day/night rearview mirror automatically changes reflectance to reduce glare from headlights. At night, as glare of headlights from behind increases, mirror will gradually become darker to absorb glare. During daylight or when shift selector is in Reverse, mirror will be clear and fully reflective. On some models, driver's side outside mirror will also be an electrochromic day/night mirror that is controlled by inside mirror. On some models, inside rearview mirrors also include a compass.
OPERATION
Day/night mirror(s) use a thin layer of electrochromic material between 2 plates of conductive glass. Two photocell sensors signal levels of light to a logic circuit. A forward-facing photocell sensor measures ambient light levels. A rear-facing photocell sensor measures glare from approaching vehicle headlights. When logic circuit senses more light from the headlight sensor than the ambient light sensor, the electrochromic drive circuit applies voltage to mirror(s). Approximately 1.15 volts is applied to mirror(s) when a large amount of glare is present, causing mirror(s) to darken. Voltage will be reduced to 0.01 volt when both photocells indicate the same light level.
When shift selector is put into Reverse, battery voltage is applied to mirror reset terminal. Mirror will gradually change to a clear state for better vision when backing up.
SYSTEM CHECK FOR NORMAL OPERATION
- Turn ignition to RUN position and shift selector to Park. Place mirror ON-OFF switch to ON position or OFF-MIN-MAX switch to MAX position. Cover ambient photocell sensor (windshield side) with a dark cloth. Shine a flashlight onto headlight photocell sensor (mirror side). If inside rearview mirror and left outside mirror (if equipped) gradually darken, go to next step. If mirror(s) does not darken, check connections. If connections are okay, check Pink, Yellow and/or Pink/Black wire circuits between mirror ON-OFF switch and fuse block for an open or a short to ground. Check Black or Black/White wire ground circuit for an open. See «WIRING DIAGRAMS»(ref-32390-S09660939892001010900000) .
- DO NOT remove dark cloth and flashlight. Move shift selector to Reverse. If mirror(s) gradually lightens to a clear state, go to step 4). If outside mirror (if equipped) does not lighten, go to next step. If inside mirror does not lighten, check connections. If connections are okay, check park/neutral position switch operation. If park/neutral position switch is okay, check Light Green wire circuit between inside mirror and park/neutral position switch. If Light Green wire circuit is okay, check Pink wire circuit between park/neutral position switch and fuse block.
- If electrochromic outside mirror did not change, check Gray wire and Pink wire circuits between inside mirror and outside mirror.
- DO NOT remove dark cloth and flashlight. Place shift selector to Park. Mirror(s) should gradually darken. Remove dark cloth and flashlight. Mirror(s) should gradually lighten to a clear state. If mirror(s) changes as described, system is operating normally. If mirror(s) does not change as described and fuses, connections and circuits are okay, replace suspect mirror assembly and retest system.