WINDOW DEFOGGER SYSTEM TERMINALS OF ECU


  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    A01EQN8E01

    1. Disconnect the E36 air conditioning amplifier assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E36-5 (IG+) - E36-1 (GND) G - W-B Power source (IG) Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      E36-6 (+B1) - E36-1 (GND) R - W-B Power source Always 11 to 14 V
      E36-7 (+B2) - E36-1 (GND) R - W-B Power source Always 11 to 14 V
      E36-1 (GND) - Body ground W-B - 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 E36 air conditioning amplifier assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E36-24 (RDEF) - E36-1 (GND) G - W-B Defogger relay Engine switch on (IG) and defogger switch off 11 to 14 V
      Engine switch on (IG) and defogger switch on Below 1 V

      • If the result is not as specified, the air conditioning amplifier assembly or fuse may have a malfunction.

  2. MULTI-MEDIA MODULE RECEIVER ASSEMBLY

    A01EO0PE14
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    F76-12 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    F76-15 (IG) - F76-12 (GND1) G - W-B Power source (IG) Engine switch on (IG) 11 to 14 V
    Engine switch off Below 1 V
    F76-16 (ACC1) - F76-12 (GND1) GR - W-B Power source (ACC) Engine switch on (ACC) 11 to 14 V
    Engine switch off Below 1 V
    F76-17 (+B1) - F76-12 (GND1) R - W-B Power source Always 11 to 14 V
    F76-35 (UIND) R UART communication signal - -
    F76-36 (UPSW) P UART communication signal - -
    F76-1 (CANH) P CAN communication signal - -
    F76-2 (CANL) B CAN communication signal - -

  3. MULTI-DISPLAY ASSEMBLY

    A01EQJZE21
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    F78-12 (+B2) - F78-13 (GND1) R - BR Power source Always 11 to 14 V
    F78-13 (GND1) - Body ground BR - Body ground Ground Always Below 1 Ω
    F78-23 (IG) - F78-13 (GND1) G - BR Power source (IG) Engine switch on (IG) 11 to 14 V
    Engine switch off Below 1 V
    F78-24 (ACC) - F78-13 (GND1) GR - BR Power source (ACC) Engine switch on (ACC) 11 to 14 V
    Engine switch off Below 1 V
    F78-3 (UPSW) P UART communication signal - -
    F78-4 (UIND) R UART communication signal - -