Honda Accord: System Description
EX-L, EX-L PZEV models
The automatic dimming Inside mirror has a front-facing lux level sensor (A), rear-facing lux level sensors (B), and a control unit. The control unit receives signals from each sensor. Based on the difference between the two lux levels (the light outside the vehicle and the light from the headlights of the other vehicle, etc.), the control unit controls the electro-chromic gel to reduce glare. This dimming function is canceled when the transmission is in reverse, or when the automatic dimming off button (C) Is turned OFF.

Circuit Diagram
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Test/Replacement
EX-L, EX-L PZEV models
1. Remove the cover (A), then disconnect BP connector
(B).
2. Turn the ignition switch to ON (II).
3. Measure the voltage between terminal No. 2 and
body ground.
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See also:
Alternator Overhaul
Exploded View
Special Tools Required
- Driver Handle, 15 x 135L 07749-0010000
- Bearing Driver Attachment, 42 x 47 mm 07746-0010300
NOTE: Refer to the Exploded View as needed during this
proced ...
Immobilizer System
The immobilizer system protects
your vehicle from theft. If an
improperly coded key (or other
device) is used, the engine’s fuel
system is disabled.
When you turn the ignition switch to
t ...