Dash Lights Brightness Controller
Controller Test1. Remove the instrument panel.
2. Remove the switch (A) from the instrument fascia.
3. Measure the resistance between the No. 4 and No. 5 terminals while rotating the adjusting dial. The resistance should vary from 0 to 20 kohms as the dial is rotated.
4. Check for continuity between the No. 3 and No. 6 terminals with the dial rotated to CANCEL position. There should be no continuity.
5. If necessary, check the illumination bulb (B).