Ambient Light Sensor: Testing and Inspection

Trouble-Shooting Information

Condition

- No diagnostic trouble codes are stored
- Fault is permanent

NOTE: If the nightfall sensor is covered, the climate control module (CCM) does not receive any signals regarding light intensity, and the brightness of the LED buttons cannot be regulated. These types of error are not included in trouble-shooting.

Possible source

- Defective measuring instrument
- Defective nightfall sensor.