Ambient Light Sensor: Testing and Inspection

LIGHTING: AUTOMATIC LIGHT CONTROL SENSOR: ON-VEHICLE INSPECTION

1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR

(a) Connect the voltmeter's positive (+) lead to terminal K19-6 (CLTB) and the negative (-) lead to terminal K19-3 (CLTE).





(b) Measure the voltage according to the value(s) in the table below.

Standard voltage:





(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





(d) Reconnect the K19 sensor connector.

(e) Check the waveform according to the value(s) in the table below.





Waveform:





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

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