Mirrors: Testing and Inspection

Inspection

Check it by the procedure below to see if the function of the ECM is normal.
1. Turn the ignition key to the "ON" position.
2. Press the A button to turn the automatic dimming function ON/OFF.
3. Cover the front looking sensor (B) to stop functioning.
4. Head a light to the rearward looking sensor(C).
5. The ECM should be darkened as soon as the rearward looking sensor detects the light.

NOTE:
If this test is performed in daytime, the ECM may be darkened as soon as the front looking sensor is covered.

6. When the reverse gear is engaged, the ECM should not be darkened.
7. When heading lights to both the front looking and rearward looking sensors, the ECM should not be darkened.