AUTOMATIC LIGHT CONTROL SENSOR INSPECTION


  1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR (for Automatic Air Conditioning System)


    1. A01HNATE02

      Disconnect the I61 automatic light control sensor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I61-6 (CLTB) - I61-3 (CLTE) Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      I61-3 (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. A01HNUEE02

      Reconnect the I61 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. A01HPEFE01

      Check the waveform.

      OK
      Tester Connection Tool Setting Switch Condition Specified Condition
      I61-3 (CLTE) - I61-5 (CLTS) 5 V/DIV., 5 ms./DIV Ignition switch ON, 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.

  2. INSPECT AUTOMATIC LIGHT CONTROL SENSOR (for Manual Air Conditioning System)


    1. A01HQG9E01

      Disconnect the I132 automatic light control sensor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I132-3 (CLTB) - I132-5 (CLTE) Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      I132-5 (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. A01HPZME01

      Reconnect the I132 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. A01HPEFE01

      Check the waveform.

      OK
      Tester Connection Tool Setting Switch Condition Specified Condition
      I132-5 (CLTE) - I132-4 (CLTS) 5 V/DIV., 5 ms./DIV Ignition switch ON, 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.