AUTOMATIC LIGHT CONTROL SENSOR INSPECTION


  1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR


    1. A017DG1E42

      Disconnect the F1 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
      F1-6 (CLTB) - F1-3 (CLTE) Ignition switch off Below 1 V
      Ignition switch on (IG) 10 to 14 V
      Standard resistance
      Tester Connection Specified Condition
      F1-3 (CLTE) - Body ground Below 1 Ω

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

    3. A017G8GE01

      Reconnect the automatic light control sensor connector.

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

    5. A017BDQE01

      Check the waveform.

      OK
      Tester Connection Tool Setting Condition Specified Condition
      F1-3 (CLTE) - F1-5 (CLTS) 5 V/DIV., 5 ms./DIV Ignition switch on (IG), light control switch in AUTO Correct waveform is as shown

      Tech Tips

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

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