REAR POWER SEAT CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK FOLD SEAT CONTROL ECU LH

    A0098A6E09

    1. Disconnect the d1 and d2 ECU connectors.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      d2-2 (+B) - d2-9 (GND2) R - W-B Power source (Battery) Always 11 to 14 V
      d2-9 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      d2-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      d1-1 (ECUB) - d2-10 (GND) GR - W-B Power source (Battery) Always 11 to 14 V
      d1-3 (IG) - d2-9 (GND2) B - W-B Power source (IG) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      d1-6 (P) - Body ground*1 W - Body ground Park/neutral position switch signal

      Ignition switch ON

      Shift lever in P

      		 11 to 14 V

      Ignition switch ON

      Shift lever not in P

      		 Below 1 V

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

    3. Reconnect the d1 and d2 ECU connectors.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      d2-1 (RCL+) - Body ground B - Body ground Reclining motor operation signal Rear power seat switch LH forward 11 to 14 V
      d2-5 (RCL-) - Body ground L - Body ground Reclining motor operation signal Rear power seat switch LH backward 11 to 14 V
      d2-8 (FLD+) - Body ground W - Body ground Cushion motor operation signal No. 1 or No. 2 fold seat switch LH fold 11 to 14 V
      d2-7 (FLD-) - Body ground B - Body ground Cushion motor operation signal No. 1 or No. 2 fold seat switch LH return 11 to 14 V
      d1-10 (FLD2) - Body ground GR - Body ground No. 1 fold seat switch signal (Fold) No. 1 fold seat switch LH off 11 to 14 V
      No. 1 fold seat switch LH fold Below 1 V
      d1-12 (RCLF) - Body ground P - Body ground Reclining forward switch signal Always 11 to 14 V
      Rear power seat switch LH forward Below 1 V
      d1-13 (RCLR) - Body ground Y - Body ground Reclining backward switch signal Always 11 to 14 V
      Rear power seat switch LH backward Below 1 V
      d1-14 (RTN2) - Body ground SB - Body ground No. 1 fold seat switch signal (Return) No. 1 fold seat switch LH off 11 to 14 V
      No. 1 fold seat switch LH return Below 1 V
      d1-15 (RTRN) - Body ground L - Body ground No. 2 fold seat switch signal (Return) No. 2 fold seat switch LH off 11 to 14 V
      No. 2 fold seat switch LH return Below 1 V
      d1-16 (FOLD) - Body ground V - Body ground No. 2 fold seat switch signal (Fold) No. 2 fold seat switch LH off 11 to 14 V
      No. 2 fold seat switch LH fold Below 1 V
      d1-17 (SV1) - d1-25 (SG1) P - R Folding position sensor power supply Ignition switch off Below 1 V
      Ignition switch ON 5.5 to 8 V
      d1-18 (SFLD) - d1-25 (SG1) G - R Folding position sensor signal Motor operating Pulse generation
      d1-19 (SRCL) - d1-24 (SG2) LG - W Reclining position sensor signal Motor operating Pulse generation
      d1-24 (SG2) - Body ground W - Body ground Reclining position sensor ground Always Below 1 Ω
      d1-25 (SG1) - Body ground R - Body ground Folding position sensor ground Always Below 1 Ω
      d1-37 (SV2) - d1-24 (SG2) GR - W Reclining position sensor power supply Ignition switch off Below 1 V
      Ignition switch ON 5.5 to 8 V
      d1-40 (PKB1) - Body ground*2 R - Body ground Parking brake switch signal Parking brake switch off 11 to 14 V
      Parking brake switch on Below 1 V

      • *1: for Automatic Transmission

      • *2: for Manual Transmission

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

  2. CHECK FOLD SEAT CONTROL ECU RH

    A0098A6E10

    1. Disconnect the c1 and c2 ECU connectors.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      c2-2 (+B) - c2-9 (GND2) R - W-B Power source (Battery) Always 11 to 14 V
      c2-9 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      c2-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      c1-1 (ECUB) - c2-10 (GND) GR - W-B Power source (Battery) Always 11 to 14 V
      c1-3 (IG) - c2-9 (GND2) B - W-B Power source (IG) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      c1-6 (P) - Body ground*1 W - Body ground Park/neutral position switch signal

      Ignition switch ON

      Shift lever in P

      		 11 to 14 V

      Ignition switch ON

      Shift lever not in P

      		 Below 1 V

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

    3. Reconnect the c1 and c2 ECU connectors.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Condition Specified Condition
      c2-1 (RCL+) - Body ground B - Body ground Reclining motor operation signal Rear power seat switch RH forward 11 to 14 V
      c2-5 (RCL-) - Body ground L - Body ground Reclining motor operation signal Rear power seat switch RH backward 11 to 14 V
      c2-8 (FLD+) - Body ground GR - Body ground Cushion motor operation signal No. 1 or No. 2 fold seat switch RH fold 11 to 14 V
      c2-7 (FLD-) - Body ground LG - Body ground Cushion motor operation signal No. 1 or No. 2 fold seat switch RH return 11 to 14 V
      c1-10 (FLD2) - Body ground GR - Body ground No. 1 fold seat switch signal (Fold) No. 1 fold seat switch RH off 11 to 14 V
      No. 1 fold seat switch RH fold Below 1 V
      c1-12 (RCLF) - Body ground P - Body ground Reclining forward switch signal Always 11 to 14 V
      Rear power seat switch RH forward Below 1 V
      c1-13 (RCLR) - Body ground Y - Body ground Reclining backward switch signal Always 11 to 14 V
      Rear power seat switch RH backward Below 1 V
      c1-14 (RTN2) - Body ground SB - Body ground No. 1 fold seat switch signal (Return) No. 1 fold seat switch RH off 11 to 14 V
      No. 1 fold seat switch RH return Below 1 V
      c1-15 (RTRN) - Body ground L - Body ground No. 2 fold seat switch signal (Return) No. 2 fold seat switch RH off 11 to 14 V
      No. 2 fold seat switch RH return Below 1 V
      c1-16 (FOLD) - Body ground V - Body ground No. 2 fold seat switch signal (Fold) No. 2 fold seat switch RH off 11 to 14 V
      No. 2 fold seat switch RH fold Below 1 V
      c1-17 (SV1) - c1-25 (SG1) P - R Folding position sensor power supply Ignition switch off Below 1 V
      Ignition switch ON 5.5 to 8 V
      c1-18 (SFLD) - c1-25 (SG1) G - R Folding position sensor signal Motor operating Pulse generation
      c1-19 (SRCL) - c1-24 (SG2) LG - W Reclining position sensor signal Motor operating Pulse generation
      c1-24 (SG2) - Body ground W - Body ground Reclining position sensor ground Always Below 1 Ω
      c1-25 (SG1) - Body ground R - Body ground Folding position sensor ground Always Below 1 Ω
      c1-37 (SV2) - c1-24 (SG2) GR - W Reclining position sensor power supply Ignition switch off Below 1 V
      Ignition switch ON 5.5 to 8 V
      c1-40 (PKB1) - Body ground*2 R - Body ground Parking brake switch signal Parking brake switch off 11 to 14 V
      Parking brake switch on Below 1 V

      • *1: for Automatic Transmission

      • *2: for Manual Transmission

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