Ambient Light Sensor: Testing and Inspection

AUTOMATIC LIGHT CONTROL SENSOR

ON-VEHICLE INSPECTION

1. CHECK AUTOMATIC LIGHT CONTROL SENSOR
a. Disconnect the A31 sensor connector.










b. Measure the voltage and resistance of the wire harness side connector.

HINT:
- Ignition switch ON
- Light control switch AUTO
- Vehicle's surroundings are bright

If the result is not as specified, repair or replace the wire harness or connector.

c. Reconnect the A31 sensor connector.




d. Measure the voltage of the connector.
- Ignition switch ON
- Light control switch AUTO
- Vehicle's surroundings are bright

If the result is not as specified, repair or replace the wire harness or connector.