SEAT VIBRATION SYSTEM TERMINALS OF ECU


  1. CHECK SEAT VIBRATION MODULE ASSEMBLY


    1. Disconnect the S29 connector.

      A000W7YE07

    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 Ignition power supply Power switch off Below 1 V
      Power 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 f43 ECU connector.

      A000ZLPE02

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f43-3 (VB+) - f43-10 (VGND) W - W-B Power source Always 11 to 14 V
      f43-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      f43-23 (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 f43 ECU connector.

    4. Measure the voltage and resistance of the connectors.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f43-1 (LVM+) - f43-10 (VGND) LG - W-B Lumbar motor signal (forward)

      Power switch on (IG)

      Lumbar switch (forward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f43-2 (LVM-) - f43-10 (VGND) W - W-B Lumbar motor signal (rearward)

      Power switch on (IG)

      Lumbar switch (rearward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f43-12 (VIB+) - f43-11 (VIB-) L - P Vibrator signal

      Power switch on (IG)

      Vibrator switch ON

      Pulse generation

      (See waveform 1)
      Other than above Below 1 V
      f43-20 (VSW) - f43-23 (SGND) GR - BR Vibrator switch signal

      Power switch on (IG)

      Vibrator switch OFF pushed

      		 Below 1 V

      Power switch on (IG)

      Vibrator switch ON pushed

      		 2 to 3 V
      Other than above 4 to 5 V
      f43-21 (MSW) - f43-23 (SGND) L - BR Lumbar switch signal

      Power switch on (IG)

      Lumbar switch (rearward) ON

      		 Below 1 V

      Power switch on (IG)

      Lumbar switch (forward) ON

      		 2 to 3 V
      Other than above 4 to 5 V
      f43-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    5. A000WZHE01

      Using an oscilloscope, check waveform 1.

      Item Content
      Terminal No. (Symbols) f43-12 (VIB+) - f43-11 (VIB-)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition

      Power switch on (IG)

      Vibrator switch ON

  3. CHECK POSITION CONTROL ECU RH


    1. Disconnect the f39 ECU connector.

      A000VVSE02

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f39-3 (VB+) - f39-10 (VGND) W - W-B Power source Always 11 to 14 V
      f39-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      f39-23 (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 f39 ECU connector.

    4. Measure the voltage and resistance of the connectors.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      f39-1 (LVM+) - f39-10 (VGND) LG - W-B Lumbar motor signal (forward)

      Power switch on (IG)

      Lumbar switch (forward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f39-2 (LVM-) - f39-10 (VGND) W - W-B Lumbar motor signal (rearward)

      Power switch on (IG)

      Lumbar switch (rearward) ON

      		 11 to 14 V
      Other than above Below 1 V
      f39-12 (VIB+) - f39-11 (VIB-) L - P Vibrator signal

      Power switch on (IG)

      Vibrator switch ON

      Pulse generation

      (See waveform 1)
      Other than above Below 1 V
      f39-20 (VSW) - f39-23 (SGND) L - BR Vibrator switch signal

      Power switch on (IG)

      Vibrator switch OFF pushed

      		 Below 1 V

      Power switch on (IG)

      Vibrator switch ON pushed

      		 2 to 3 V
      Other than above 4 to 5 V
      f39-21 (MSW) - f39-23 (SGND) P - BR Lumbar switch signal

      Power switch on (IG)

      Lumbar switch (rearward) ON

      		 Below 1 V

      Power switch on (IG)

      Lumbar switch (forward) ON

      		 2 to 3 V
      Other than above 4 to 5 V
      f39-10 (VGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    5. A000WZHE01

      Using an oscilloscope, check waveform 1.

      Item Content
      Terminal No. (Symbols) f39-12 (VIB+) - f39-11 (VIB-)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition

      Power switch on (IG)

      Vibrator switch ON