AUTOMATIC LIGHT CONTROL SENSOR > INSPECTION

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1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR


    E223976E01

  1. Disconnect the I1 automatic light control sensor connector.

  1. Measure the voltage and resistance according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    I1-6 (CLTB) - I1-3 (CLTE)
    		Power switch off
    		Below 1 V
    Power switch on (IG)
    		10 to 14 V

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    I1-3 (CLTE) - Body ground
    		Always
    		Below 1 Ω

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Automatic Light Control Sensor)
    If the result is not as specified, there may be a malfunction on the wire harness side.



    E223977E01

  1. Reconnect the I1 automatic light control sensor connector.

  1. Connect an oscilloscope to the automatic light control sensor connector.
    Text in Illustration 
    *a
    		Component with harness connected
    (Automatic Light Control Sensor)



    E223978E01

  1. Check the waveform.

    OK:
    Tester Connection
    		Tool Setting
    		Switch Condition
    		Specified Condition
    I1-3 (CLTE) - I1-5 (CLTS)
    		5 V/DIV., 5 ms./DIV
    		Power switch on (IG), light control switch in AUTO position
    		Correct waveform is as shown

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

    If the result is not as specified, the automatic light control sensor may have a malfunction.