Dimmer Switch: Service and Repair

Dash Lights Brightness Controller Test/Replacement

1. Remove the instrument fascia Instrument Fascia Removal / Installation.

2. Disconnect the 6P connector (A) from the dash lights brightness controller (B).





3. Remove the two screws and the dash lights brightness controller.

4. Check for continuity between terminals No. 5 and No. 6.

- There should be continuity when the ILLUMI (-) button is pressed.
- There should be no continuity when the ILLUMI (-) button is released.

5. Check for continuity between terminals No. 4 and No. 6.

- There should be continuity when the ILLUMI (+) button is pressed.
- There should be no continuity when the ILLUMI (+) button is released.

6. Check the LED by connecting battery power to terminal No. 1 and ground to terminal No. 2. The LED should come on.

7. If the continuity is not as specified, or the LED is faulty, replace the controller.