Auto-Dimmimg Mirror Construction/Operation - Mazda RX-8 2004 Service Highlights

AUTO-DIMMIMG MIRROR CONSTRUCTION/OPERATION

Function
• The auto-dimming mirror automatically reduces glare from rear car headlights when the auto-dimming mirror
on/off switch is turned on.
• The auto-dimming mirror comes with an integrated HomeLink Wireless Control System, which enables the
programming of the mirror for activation of garage doors, electric gates, and home lighting. The auto-dimming
mirror stores the codes from various existing transmitters.
• If the auto-dimming mirror is replaced, it is necessary to perform the HomeLink programming. Refer to the
Owner's Manual for the procedure.
DAY/NIGHT SENSOR
Operation
1. The day/night sensor detects the ambient brightness (A) and sends the signal to the CPU.
2. The glare detection sensor detects the amount of light from the rear (B) and sends the signal to the CPU.
3. The CPU compares A and B, and determines the reflectance of the mirror.
4. The CPU controls the reflectance of the mirror by changing the voltage.
5. The reflectance is determined to be high when the CPU receives the R position/reverse gear signal from the
TR switch/back-up light switch.
IG SWITCH
TR SWITCH OR
BACK-UP LIGHT
SWITCH
End Of Sie
09–12–6
GLASS/WINDOWS/MIRRORS
HomeLink BUTTON
INDICATOR LIGHT
GLARE DETECTION
SENSOR
DAY/NIGHT
SENSOR
R POSITION/
REVERSE GEAR SIGNAL
AUTO-DIMMING MIRROR
AUTO-DIMMING MIRROR
ON/OFF BUTTON
GLARE DETECTION
SENSOR
CPU
CALCULATE
REFLECTANCE
OUTPUT VOLTAGE
CONTROL
AUTO-DIMMING MIRROR
CHU091269220S04
B6U0912S005
CHANGING
VOLTAGE
MIRROR
CHU0912S202