Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA2011TSX SPORT WAGON L4-2.4LREPAIR AND DIAGNOSISBODY AND FRAMEMIRRORSSERVICE AND REPAIRAUTOMATIC DIMMING INSIDE MIRROR TEST/REPLACEMENT
2011 Acura TSX Sport Wagon L4-2.4L
Automatic Dimming Inside Mirror Test/Replacement
2011 Acura TSX Sport Wagon L4-2.4LSECTION Automatic Dimming Inside Mirror Test/Replacement
Automatic Dimming Inside Mirror Test/Replacement
1. Check for obstructions (parking stickers, labels, etc.) over the front-facing lux level sensor (A).
2. Remove the cover (B), then disconnect automatic dimming inside mirror 7P connector (C).
3. Turn the ignition switch to ON (II).
4. 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.
5. 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.
6. 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.