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 MANUALSACURA2010TL FWD V6-3.5LREPAIR AND DIAGNOSISBODY AND FRAMEMIRRORSSERVICE AND REPAIRAUTOMATIC DIMMING INSIDE MIRROR TEST/REPLACEMENT
2010 Acura TL FWD V6-3.5L
Automatic Dimming Inside Mirror Test/Replacement
2010 Acura TL FWD V6-3.5LSECTION Automatic Dimming Inside Mirror Test/Replacement
Automatic Dimming Inside Mirror Test/Replacement
1. Remove the cover (A), then disconnect 7P connector (B).
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. Measure the voltage between terminal No. 2 and body ground.
- If there is less than 0.2 V, go to step 4.
- If there is more than 0.2 V, check for:
- An open or high resistance in the wire.
- Poor ground (G401).
4. Measure the voltage between terminal No. 1 and body ground.
- If there is battery voltage, go to step 5.
- If there is no voltage, check for:
- A blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box.
- An open or high resistance in the wire.
5. Measure the voltage between terminal No. 3 and body ground with the shift lever in R (or reverse) position.
- If there is battery voltage, replace the mirror assembly.
- If there is no voltage, check for:
- An open or high resistance in the wire.
- A faulty driver's under-dash fuse/relay box.
- A faulty transmission range switch (A/T).
- A faulty back-up light switch (M/T).
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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.