WINDSHIELD DEICER SYSTEM TERMINALS OF ECU


  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    A01MIA8E02

    1. Disconnect the G43 air conditioning amplifier assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G43-1 (IG+) - Body ground B - Body ground Power source (IG) Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      G43-21 (B) - Body ground GR - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      G43-14 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the G43 air conditioning amplifier assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G43-11 (CANH)*1 LG - - -
      G43-12 (CANL)*1 W - - -
      G43-36 (FDEF) - Body ground W - Body ground Wiper Deicer signal Power switch on (IG), windshield deicer switch off 11 to 14 V
      Power switch on (IG), windshield deicer switch on Below 1 V

      • *1: Refer to FAIL-SAFE CHART for CAN communication system (for LHD or for RHD).

  2. CHECK INTEGRATION CONTROL AND PANEL ASSEMBLY

    A01MHARE02

    1. Disconnect the G49 integration control and panel assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G49-9 (IG+) - Body ground P - Body ground Power source (IG) Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      G49-1 (+B) - Body ground LG - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      G49-16 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the G49 integration control and panel assembly connector.

    4. Check the waveform according to the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G49-4 (CANH)*1 BR - - -
      G49-5 (CANL)*1 W - - -

      • *1: Refer to FAIL-SAFE CHART for CAN communication system (for LHD or for RHD).