REAR POWER SEAT CONTROL SYSTEM(for Rear No. 2 Seat with Automatic Folding-up Function) TERMINALS OF ECU


  1. CHECK FOLD SEAT CONTROL ECU LH

    A01WS7NE03

    1. Disconnect the i11 and i12 ECU connectors.

    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
      i11-4 (+B) - i11-8 (GND) R - W-B Power source Always 11 to 14 V
      i11-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      i12-1 (ECUB) - i11-8 (GND) R - W-B Power source Always 11 to 14 V
      i12-3 (IG) - i11-8 (GND) B - W-B Engine switch signal Engine switch on (IG) 6 V or higher
      Engine switch off Below 2 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the i11 and i12 ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      i11-1 (FLD+) - i11-8 (GND) G - W-B Folding-up motor LH operation signal Rear No. 2 seat LH folding-up operation 9 to 14 V
      i11-2 (ACT+) - i11-8 (GND) B - W-B Closer motor LH operation signal Closer motor LH lock operation 9 to 14 V
      i11-3 (FACT) - i11-8 (GND) B - W-B Floor release motor LH operation signal Floor release motor LH operating 9 to 14 V
      i11-5 (FLD-) - i11-8 (GND) R - W-B Folding-up motor LH operation signal Rear No. 2 seat LH return operation 9 to 14 V
      i11-6 (ACT-) - i11-8 (GND) W - W-B Closer motor LH operation signal Closer motor LH unlock operation 9 to 14 V
      i11-7 (RACT) - i11-8 (GND) L - W-B No. 1 back release motor LH operation signal No. 1 back release motor LH operating 9 to 14 V
      No. 2 back release motor LH operation signal No. 2 back release motor LH operating
      i12-5 (BDCY) - i11-8 (GND) W - W-B Back door courtesy switch signal Back door open Below 1 V
      Back door closed 9 to 14 V
      i12-14 (TBL) - i11-8 (GND) Y - W-B Fold seat switch signal (Table switch LH)

      Back door open

      Fold seat switch (Table switch LH) off

      		 9 to 14 V

      Back door open

      Fold seat switch (Table switch LH) on

      		 Below 1 V
      i12-15 (RTRN) - i11-8 (GND) GR - W-B Fold seat switch signal (Seat switch LH)

      Back door open

      Fold seat switch (Seat switch LH) off

      		 9 to 14 V

      Back door open

      Fold seat switch (Seat switch LH) on

      		 Below 1 V
      i12-16 (FOLD) - i11-8 (GND) G - W-B Fold seat switch signal (Fold switch LH)

      Back door open

      Fold seat switch (Fold switch LH) off

      		 9 to 14 V

      Back door open

      Fold seat switch (Fold switch LH) on

      		 Below 1 V
      i12-17 (LOPN) - i11-8 (GND) V - W-B No. 1 closer motor position slide switch LH signal No. 1 closer motor position slide switch LH off 9 to 14 V
      No. 1 closer motor position slide switch LH on Below 1 V
      i12-19 (LCTY) - i11-8 (GND) L - W-B Seat fixing lock switch LH signal Seat fixing lock switch LH off 9 to 14 V
      Seat fixing lock switch LH on Below 1 V
      i12-20 (LCLS) - i11-8 (GND) P - W-B No. 2 closer motor position slide switch LH signal No. 2 closer motor position slide switch LH off 9 to 14 V
      No. 2 closer motor position slide switch LH on Below 1 V
      i12-23 (SFLD) - i12-30 (SG1) W - B Seat cushion position sensor LH signal Folding-up motor LH operating Pulse generation
      i12-24 (SV1) - i11-8 (GND) G - W-B Power supply for seat cushion position sensor LH Back door open 4.8 V or higher
      Back door closed Below 1 V
      i12-30 (SG1) - Body ground B - Body ground Ground for seat cushion position sensor LH Always Below 1 Ω
      i12-32 (P) - i11-8 (GND) G - W-B Park/neutral position switch signal

      Engine switch on (IG)

      Park/neutral position switch in P position

      		 6 V or higher

      Engine switch on (IG)

      Park/neutral position switch not in P position

      		 Below 2 V
      i12-34 (IND2) - i11-8 (GND) B - W-B 3rd seat indicator signal

      Engine switch on (IG)

      3rd seat indicator off

      		 9 to 14 V

      Engine switch on (IG)

      3rd seat indicator on

      		 Below 1 V
      i12-35 (IND1) - i11-8 (GND) W - W-B Fold seat switch indicator LH signal

      Back door open

      Fold seat switch indicator LH off

      		 Below 1 V

      Back door open

      Fold seat switch indicator LH on

      		 8.6 to 14 V
      i12-37 (LCKF) - i11-8 (GND) SB - W-B No. 1 floor striker limit switch LH signal No. 1 floor striker limit switch LH off 9 to 14 V
      No. 1 floor striker limit switch LH on Below 1 V
      i12-38 (LCKB) - i11-8 (GND) L - W-B No. 1 seatback lock switch LH signal No. 1 seatback lock switch LH off 9 to 14 V
      No. 1 seatback lock switch LH on Below 1 V
      No. 2 seatback lock switch LH signal No. 2 seatback lock switch LH off 9 to 14 V
      No. 2 seatback lock switch LH on Below 1 V
      i12-39 (ERAB) - i11-8 (GND) BE - W-B Seatback area switch LH signal Seatback area switch LH off 9 to 14 V
      Seatback area switch LH on Below 1 V
      i12-40 (LCK2) - i11-8 (GND) R - W-B No. 2 floor striker limit switch LH signal No. 2 floor striker limit switch LH off 9 to 14 V
      No. 2 floor striker limit switch LH on Below 1 V

      If the result is not as specified, the fold seat control ECU may have a malfunction.

  2. CHECK FOLD SEAT CONTROL ECU RH

    A01WQKBE03

    1. Disconnect the i3 and i4 ECU connectors.

    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
      i3-4 (+B) - i3-8 (GND) L- W-B Power source Always 11 to 14 V
      i3-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      i4-1 (ECUB) - i3-8 (GND) R - W-B Power source Always 11 to 14 V
      i4-3 (IG) - i3-8 (GND) G - W-B Engine switch signal Engine switch on (IG) 6 V or higher
      Engine switch off Below 2 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the i3 and i4 ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      i3-1 (FLD+) - i3-8 (GND) G - W-B Folding-up motor RH operation signal Rear No. 2 seat RH folding-up operation 9 to 14 V
      i3-2 (ACT+) - i3-8 (GND) B - W-B Closer motor RH operation signal Closer motor RH lock operation 9 to 14 V
      i3-3 (FACT) - i3-8 (GND) B - W-B Floor release motor RH operation signal Floor release motor RH operating 9 to 14 V
      i3-5 (FLD-) - i3-8 (GND) R - W-B Folding-up motor RH operation signal Rear No. 2 seat RH return operation 9 to 14 V
      i3-6 (ACT-) - i3-8 (GND) W - W-B Closer motor RH operation signal Closer motor RH unlock operation 9 to 14 V
      i3-7 (RACT) - i3-8 (GND) L - W-B No. 1 back release motor RH operation signal No. 1 back release motor RH operating 9 to 14 V
      No. 2 back release motor RH operation signal No. 2 back release motor RH operating
      i4-5 (BDCY) - i3-8 (GND) W - W-B Back door courtesy switch signal Back door open Below 1 V
      Back door closed 9 to 14 V
      i4-14 (TBL) - i3-8 (GND) P - W-B Fold seat switch signal (Table switch RH)

      Back door open

      Fold seat switch (Table switch RH) off

      		 9 to 14 V

      Back door open

      Fold seat switch (Table switch RH) on

      		 Below 1 V
      i4-15 (RTRN) - i3-8 (GND) GR - W-B Fold seat switch signal (Seat switch RH)

      Back door open

      Fold seat switch (Seat switch RH) off

      		 9 to 14 V

      Back door open

      Fold seat switch (Seat switch RH) on

      		 Below 1 V
      i4-16 (FOLD) - i3-8 (GND) G - W-B Fold seat switch signal (Fold switch RH)

      Back door open

      Fold seat switch (Fold switch RH) off

      		 9 to 14 V

      Back door open

      Fold seat switch (Fold switch RH) on

      		 Below 1 V
      i4-17 (LOPS) - i3-8 (GND) V - W-B No. 1 closer motor position slide switch RH signal No. 1 closer motor position slide switch RH off 9 to 14 V
      No. 1 closer motor position slide switch RH on Below 1 V
      i4-19 (LCTY) - i3-8 (GND) L - W-B Seat fixing lock switch RH signal Seat fixing lock switch RH off 9 to 14 V
      Seat fixing lock switch RH on Below 1 V
      i4-20 (LCLS) - i3-8 (GND) P - W-B No. 2 closer motor position slide switch RH signal No. 2 closer motor position slide switch RH off 9 to 14 V
      No. 2 closer motor position slide switch RH on Below 1 V
      i4-23 (SFLD) - i4-30 (SG1) W - B Seat cushion position sensor RH signal Folding-up motor RH operating Pulse generation
      i4-24 (SV1) - i3-8 (GND) G - W-B Power supply for seat cushion position sensor RH Back door open 4.8 V or higher
      Back door closed Below 1 V
      i4-30 (SG1) - Body ground B - Body ground Ground for seat cushion position sensor RH Always Below 1 Ω
      i4-32 (P) - i3-8 (GND) G - W-B Park/neutral position switch signal

      Engine switch on (IG)

      Park/neutral position switch in P position

      		 6 V or higher

      Engine switch on (IG)

      Park/neutral position switch not in P position

      		 Below 2 V
      i4-34 (IND2) - i3-8 (GND) B - W-B 3rd seat indicator signal

      Engine switch on (IG)

      3rd seat indicator off

      		 9 to 14 V

      Engine switch on (IG)

      3rd seat indicator on

      		 Below 1 V
      i4-35 (IND1) - i3-8 (GND) W - W-B Fold seat switch indicator RH signal

      Back door open

      Fold seat switch indicator RH off

      		 Below 1 V

      Back door open

      Fold seat switch indicator RH on

      		 8.6 to 14 V
      i4-37 (LCKF) - i3-8 (GND) SB - W-B No. 1 floor striker limit switch RH signal No. 1 floor striker limit switch RH off 9 to 14 V
      No. 1 floor striker limit switch RH on Below 1 V
      i4-38 (LCKB) - i3-8 (GND) L - W-B No. 1 seatback lock switch RH signal No. 1 seatback lock switch RH off 9 to 14 V
      No. 1 seatback lock switch RH on Below 1 V
      No. 2 seatback lock switch RH signal No. 2 seatback lock switch RH off 9 to 14 V
      No. 2 seatback lock switch RH on Below 1 V
      i4-39 (ERAB) - i3-8 (GND) BE - W-B Seatback area switch RH signal Seatback area switch RH off 9 to 14 V
      Seatback area switch RH on Below 1 V
      i4-40 (LCK2) - i3-8 (GND) R - W-B No. 2 floor striker limit switch RH signal No. 2 floor striker limit switch RH off 9 to 14 V
      No. 2 floor striker limit switch RH on Below 1 V

      If the result is not as specified, the fold seat control ECU may have a malfunction.