WINDOW DEFOGGER SYSTEM TERMINALS OF ECU


  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    A003MRDN05

    1. Disconnect the I61 air conditioning amplifier assembly connector.

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I61-2 (IG+) - I61-4 (GND) B - W-B Power source (IG) Power switch on (IG) 11 to 14 V
      I61-2 (IG+) - I61-4 (GND) B - W-B Power source (IG) Power switch off Below 1 V
      I61-1 (B) - I61-4 (GND) V - W-B Auxiliary battery power supply Power switch off 11 to 14 V
      I61-4 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the I61 air conditioning amplifier assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I61-5 (RDFG) - I61-4 (GND) W - W-B Rear window defogger signal Power switch on (IG), rear window defogger switch off 11 to 14 V
      I61-5 (RDFG) - I61-4 (GND) W - W-B Rear window defogger signal Power switch on (IG), rear window defogger switch on Below 1 V
      I61-14 (LIN1) - I61-4 (GND) BE - W-B LIN communication line Power switch on (IG) Pulse generation

  2. CHECK AIR CONDITIONING CONTROL ASSEMBLY

    A003ON1N05

    1. Disconnect the I55 air conditioning control assembly connector.

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I55-8 (IG+) - I55-1 (GND) LG - W-B Power source (IG) Power switch on (IG) 11 to 14 V
      I55-8 (IG+) - I55-1 (GND) LG - W-B Power source (IG) Power switch off Below 1 V
      I55-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the I55 air conditioning control assembly connector.

    4. Check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I55-6 (LIN1) - I55-1 (GND) BE - W-B LIN communication line Power switch on (IG) Pulse generation