WINDOW DEFOGGER SYSTEM TERMINALS OF ECU


  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    A01VC42N02

    1. Disconnect the F58 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
      F58-2 (IG+) - F58-4 (GND) B - W-B Power source (IG) Power switch on (IG) 11 to 14 V
      F58-2 (IG+) - F58-4 (GND) B - W-B Power source (IG) Power switch off Below 1 V
      F58-1 (B) - F58-4 (GND) V - W-B Auxiliary battery power supply Power switch off 11 to 14 V
      F58-4 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the F58 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
      F58-5 (RDFG) - F58-4 (GND) W - W-B Rear window defogger signal Power switch on (IG), rear window defogger switch off 11 to 14 V
      F58-5 (RDFG) - F58-4 (GND) W - W-B Rear window defogger signal Power switch on (IG), rear window defogger switch on Below 1 V
      F58-14 (LIN1) - F58-4 (GND) BE - W-B LIN communication line Power switch on (IG) Pulse generation

  2. CHECK AIR CONDITIONING CONTROL ASSEMBLY

    A01VBFVN01

    1. Disconnect the F52 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
      F52-8 (IG+) - F52-1 (GND) LG - W-B Power source (IG) Power switch on (IG) 11 to 14 V
      F52-8 (IG+) - F52-1 (GND) LG - W-B Power source (IG) Power switch off Below 1 V
      F52-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the F52 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
      F52-6 (LIN1) - F52-1 (GND) BE - W-B LIN communication line Power switch on (IG) Pulse generation