Ambient Light Sensor: Testing and Inspection

LIGHTING: AUTOMATIC LIGHT CONTROL SENSOR: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR





(a) Connect the voltmeter's positive (+) lead to terminal M2-6 and the negative (-) lead to terminal M2-3.
(b) Measure the voltage of the connector.
Standard voltage:






(c) Measure the resistance of the connector.
Standard resistance:










(d) Check the waveform of the M2 sensor connector.
Wave form:





HINT: If the ambient light becomes brighter, width A becomes narrower.
If the result is not as specified, replace the automatic light control sensor.