CLIMATE CONTROL SEAT SYSTEM TERMINALS OF ECU


  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    Figure 1. for 4 Zone Type:

    B006BDBE01

    Figure 2. for Dual Type:

    B006BZYN07

    1. Disconnect the G65 air conditioning amplifier assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G65-2 (IG+) - Body ground LA-R - Body ground IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      G65-4 (GND) - Body ground LA - Body ground Ground Always Below 1 Ω

    3. Reconnect the G65 air conditioning amplifier 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
      G65-23 (ROUT) - Body ground BE - Body ground Climate control blower control signal

      • Engine switch on (IG)

      • Ventilation volume switch RH on

      Pulse generation

      (See waveform)
      G65-24 (LOUT) - Body ground R - Body ground Climate control blower control signal

      • Engine switch on (IG)

      • Ventilation volume switch LH on

      Pulse generation

      (See waveform)
      G63-14 (SVDB)* - Body ground R - Body ground Climate control blower control signal

      • Engine switch on (IG)

      • Ventilation volume switch RH on

      Pulse generation

      (See waveform)
      G63-26 (SVPB)* - Body ground R - Body ground Climate control blower control signal

      • Engine switch on (IG)

      • Ventilation volume switch LH on

      Pulse generation

      (See waveform)

      • *: w/ Rear Climate Control Seat


      1. B0069W4N02

        Waveform (Reference):

        Measurement Condition
        Item Content
        Tester Connection

        • G65-23 (ROUT) - Body ground

        • G65-24 (LOUT) - Body ground

        • G63-14 (SVDB)* - Body ground

        • G63-26 (SVPB)* - Body ground
        Tool Setting 1 V/DIV., 1 ms/DIV.
        Vehicle Condition

        • Engine switch on (IG)

        • Ventilation volume switch on

        • *: w/ Rear Climate Control Seat

  2. CHECK RADIO RECEIVER ASSEMBLY

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