Automatic Dimming Inside Mirror (4-CYL): Test/Replacement
- Check for obstructions (parking stickers, labels, etc.) over the front-facing lux level sensor (A).
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- Remove the cover (B), then disconnect automatic dimming inside mirror 7P connector (C).
- 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:
- Poor ground (G501).
- An open or high resistance in the wire.
- 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. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box.
- An open or high resistance in the wire.
- Measure the voltage between terminal No. 3 and body ground with the shift lever in R (reverse) position.
- If there is battery voltage, replace the mirror assembly.
- If there is no voltage, check for:
- Faulty driver's under-dash fuse/relay box.
- Faulty transmission range switch (A/T).
- Faulty back-up light switch (M/T).
- An open or high resistance in the wire.