SEAT VIBRATION SYSTEM TERMINALS OF ECU


  1. CHECK SEAT VIBRATION MODULE ASSEMBLY


    1. Disconnect the S29 connector.

      A01GMN0E01

    2. Measure the voltage and resistance of the wire harness side connector.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      S29-1 (IG) - S29-8 (GND) BR - W-B Engine switch signal Engine switch off Below 1 V
      S29-1 (IG) - S29-8 (GND) BR - W-B Engine switch signal Engine switch on (IG) 11 to 14 V
      S29-8 (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.

  2. CHECK POSITION CONTROL ECU LH


    1. Disconnect the f41 ECU connector.

      A01GJBHE01

    2. Measure the voltage and resistance of the wire harness connectors.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f41-3 (VB+) - f41-10 (VGND) W - W-B Battery Always 11 to 14 V
      f41-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      f41-23 (SGND) - Body ground BR - 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 f41 ECU connector.

    4. Measure the voltage and resistance of the connectors.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f41-1 (LVM+) - f41-10 (VGND) LG - W-B Lumbar motor signal (forward)

      Engine switch on (IG)

      Lumbar switch (forward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f41-2 (LVM-) - f41-10 (VGND) W - W-B Lumbar motor signal (rearward)

      Engine switch on (IG)

      Lumbar switch (rearward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f41-12 (VIB+) - f41-11 (VIB-) L - P Vibrator signal

      Engine switch on (IG)

      Vibrator switch ON

      Pulse generation

      (See waveform 1)
      Other than above Below 1 V
      f41-20 (VSW) - f41-23 (SGND) GR - BR Vibrator switch signal

      Engine switch on (IG)

      Vibrator switch OFF

      		 Below 1 V

      Engine switch on (IG)

      Vibrator switch ON

      		 2 to 3 V
      Other than above 4 to 5 V
      f41-21 (MSW) - f41-23 (SGND) L - BR Lumbar switch signal

      Engine switch on (IG)

      Lumbar switch (rearward) ON

      		 Below 1 V

      Engine switch on (IG)

      Lumbar switch (forward) ON

      		 2 to 3 V
      Other than above 4 to 5 V
      f41-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    5. A01GNWNE01

      Using an oscilloscope, check waveform 1.

      Item Content
      Terminal No. (Symbols) f41-12 (VIB+) - f41-11 (VIB-)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition

      Engine switch on (IG)

      Vibrator switch ON

  3. CHECK POSITION CONTROL ECU RH


    1. Disconnect the f38 ECU connector.

      A01GJBHE02

    2. Measure the voltage and resistance of the wire harness connectors.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f38-3 (VB+) - f38-10 (VGND) W - W-B Battery Always 11 to 14 V
      f38-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      f38-23 (SGND) - Body ground BR - 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 f38 ECU connector.

    4. Measure the voltage and resistance of the connectors.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f38-1 (LVM+) - f38-10 (VGND) LG - W-B Lumbar motor signal (forward)

      Engine switch on (IG)

      Lumbar switch (forward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f38-2 (LVM-) - f38-10 (VGND) W - W-B Lumbar motor signal (rearward)

      Engine switch on (IG)

      Lumbar switch (rearward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f38-12 (VIB+) - f38-11 (VIB-) L - P Vibrator signal

      Engine switch on (IG)

      Vibrator switch ON

      Pulse generation

      (See waveform 1)
      Other than above Below 1 V
      f38-20 (VSW) - f38-23 (SGND) L - BR Vibrator switch signal

      Engine switch on (IG)

      Vibrator switch OFF

      		 Below 1 V

      Engine switch on (IG)

      Vibrator switch ON

      		 2 to 3 V
      Other than above 4 to 5 V
      f38-21 (MSW) - f38-23 (SGND) P - BR Lumbar switch signal

      Engine switch on (IG)

      Lumbar switch (rearward) ON

      		 Below 1 V

      Engine switch on (IG)

      Lumbar switch (forward) ON

      		 2 to 3 V
      Other than above 4 to 5 V
      f38-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    5. A01GNWNE01

      Using an oscilloscope, check waveform 1.

      Item Content
      Terminal No. (Symbols) f38-12 (VIB+) - f38-11 (VIB-)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition

      Engine switch on (IG)

      Vibrator switch ON