LIGHTING SYSTEM TERMINALS OF ECU


  1. Instrument panel J/B assembly (w/ Automatic light control system)


    1. Disconnect the 5E, 5G, and 5M instrument J/B connectors.

      A01BG16E01

    2. Measure the voltage and resistance between the wire harness side connectors and body ground.

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

    3. Reconnect the 5E, 5G, and 5M instrument J/B connectors.

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

      5. If the result is not as specified, the body ECU may have a malfunction.

      *1: LHD

      *2: RHD


      1. A01BDLOE01

        Waveform 1

      Item Description
      Terminal CLTS - CLTE
      Gauge 5 V/DIV, 5 ms/DIV
      Condition Ignition switch ON, Headlight dimmer SW in AUTO

    Tech Tips

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