AUTOMATIC LIGHT CONTROL SENSOR ON-VEHICLE INSPECTION


  1. CHECK AUTOMATIC LIGHT CONTROL SENSOR (for LHD)


    1. A01BF2XE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Automatic Light Control Sensor)

      Disconnect the I10 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
      I10-1 (CLTB) - I10-3 (CLTE) Ignition switch off Below 1 V
      Ignition switch on (IG) 10 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      I10-3 (CLTE) - Body ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. A01BBXJE01
      Text in Illustration
      *a

      Component with harness connected

      (Automatic Light Control Sensor)

      Reconnect the I10 automatic light control sensor connector.

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

    5. A01BDLOE01

      Check the waveform.

      OK
      Tester Connection Tool Setting Switch Condition Specified Condition
      I10-3 (CLTE) - I10-4 (CLTS) 5 V/DIV., 5 ms./DIV Ignition 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 have a malfunction.

  2. CHECK AUTOMATIC LIGHT CONTROL SENSOR (for RHD)


    1. A01BE2HE83
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Automatic Light Control Sensor)

      Disconnect the I22 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
      I22-3 (CLTB) - I22-6 (CLTE) Ignition switch off Below 1 V
      Ignition switch on (IG) 10 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      I22-6 (CLTE) - Body ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. A01BG4KE01
      Text in Illustration
      *a

      Component with harness connected

      (Automatic Light Control Sensor)

      Reconnect the I22 automatic light control sensor connector.

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

    5. A01BDLOE01

      Check the waveform.

      OK
      Tester Connection Tool Setting Switch Condition Specified Condition
      I22-6 (CLTE) - I22-4 (CLTS) 5 V/DIV., 5 ms./DIV Ignition 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 have a malfunction.