AUTOMATIC LIGHT CONTROL SENSOR INSPECTION


  1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR


    1. A01G7ZZE05

      Disconnect the J1 automatic light control sensor connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J1-6 (CLTB) - J1-3 (CLTE) Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      J1-3 (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.

    3. A01G8M8E08

      Reconnect the J1 automatic light control sensor connector.

    4. Connect an oscilloscope to the automatic light control sensor connector.

      Text in Illustration
      *a

      Component with harness connected

      (Automatic Light Control Sensor)
    5. A01G5CSE01

      Check the waveform.

      OK
      Tester Connection Tool Setting Condition Specified Condition
      J1-3 (CLTE) - J1-5 (CLTS) 5 V/DIV., 5 ms./DIV Engine switch on (IG), light control switch in AUTO position Correct waveform is as shown

      Tech Tips

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

      If the result is not as specified, the automatic light control sensor may be malfunctioning.