WINDOW DEFOGGER SYSTEM TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (NETWORK GATEWAY ECU)

    A004IJ6E02
    Text in Illustration
    *1 Instrument Panel Junction Block Assembly *2 Main Body ECU (Network Gateway ECU)

    1. Remove the main body ECU (network gateway ECU).

    2. Disconnect the A73 main body ECU (network gateway ECU) connector.

    3. Measure the voltage and resistance of the wire harness side connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A73-24 - Body ground W - Body ground Ignition power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V

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

  2. CHECK HEATER CONTROL SUB-ASSEMBLY (for Manual Air Conditioning System)

    A004K6ZE02

    1. Disconnect the D22 heater control sub-assembly connector.

    2. Measure the voltage and resistance of the wire harness side connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D22-2 (RDEF+) - D22-4 (RDEF-) W - B-Y Ignition power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      D22-4 (RDEF-) - Body ground B-Y - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the D22 heater control sub-assembly connector.

    4. Measure the voltage of the connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D22-6 (IND+) - D22-4 (RDEF-) R-V - B-Y Rear window defogger signal Ignition switch ON, rear window defogger switch OFF 11 to 14 V
      Ignition switch ON, rear window defogger switch ON Below 1 V

      • If the result is not as specified, the heater control sub-assembly may have a malfunction.