Ambient Light Sensor: Testing and Inspection

ON-VEHICLE INSPECTION

1. CHECK AUTOMATIC LIGHT CONTROL SENSOR




a. Disconnect the L1 sensor connector.
b. Connect the voltmeter's positive (+) lead to terminal 6 and the negative (-) lead to terminal 3.




c. Measure the voltage of the connector.




d. Measure the resistance of the connector.
e. Reconnect the L1 sensor connector.







f. Check the waveform of the L1 sensor connector.

HINT: If the ambient light becomes brighter, width A becomes narrower.

If the result is not as specified, replace the automatic light control sensor.