Scheme 17
System Description
The automatic dimming inside mirror has a front-facing lux level sensor (A), 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 the glare. This dimming function is canceled when the transmission is in reverse, or when the automatic dimming off switch (C) is turned OFF.
Scheme 18
Note. With the rearview monitor mirror, refer to the input test for the rearview monitor mirror (see REARVIEW MONITOR MIRROR INPUT TEST ).
Scheme 19
- Check for obstructions (parking stickers, labels, etc.) over the front-facing lux level sensor (A).
- Disconnect the 7P connector (B).
- Turn the ignition switch to ON (II).
- Measure the voltage between terminal No. 1 and body ground. If there is battery voltage, go to step 6 . If there is no voltage, check for: Blown No. 36 (10 A) fuse in the under-dash fuse/relay box. An open or high resistance in the wire. Faulty IG2 cut relay. Faulty under-dash fuse relay box.
- Measure the voltage between terminal No. 3 and body ground with the transmission range switch in R position. If there is battery voltage, replace the mirror assembly (see «REARVIEW MIRROR REPLACEMENT»(/acura/rdx/i-2009-2012/remont/mirrors/#mirrors) ). If there is no voltage, check for: Blown No. 10 (7.5 A) fuse in the under-dash fuse/relay box. An open or high resistance in the wire. Faulty under-dash fuse/relay box (MICU). Faulty transmission range switch.
- Turn the ignition switch to LOCK (0).
- Reconnect the 7P connector.
- Turn the ignition switch to ON (II).
- Measure the voltage between terminal No. 2 and body ground. If there is less than 0.2 V, go to step 5 . If there is more than 0.2 V, check for: An open or high resistance in the ground wire. Poor ground (G501).