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Terminals Of Ecu

  1. INSPECT POSITION CONTROL ECU ASSY (DRIVER SIDE) 
    Fig 1: Inspecting Position Control ECU Assy (Driver Side)
    G02956851Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P21 and P22 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.

      Standard: 

      POSITION CONTROL ECU ASSY (DRIVER SIDE) (VOLTAGE AND RESISTANCE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      IG (P21-8) - GND (P22-7) V-W - W-B Ignition switch signal Ignition switch OFF 0 V
      IG (P21-8) - GND (P22-7) V-W - W-B Ignition switch signal Ignition switch ON 10 to 14 V
      +B (P22-8) - GND (P22-7) L-W - W-B Battery Always 10 to 14 V
      SYSB (P21-9) - GND (P22-7) L-O - W-B Battery Always 10 to 14 V
      SGND (P21-13) - GND (P22-7) BR - W-B Ground Always Below 1 ohms
      GND (P22-7) - Body ground W-B - Body ground Ground Always Below 1 ohms

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

    3. Reconnect the P21 and P22 ECU connectors.
    4. Initialize the front power seat (see INITIALIZATION  ).
    5. Measure the voltage of the connectors.

      Standard: 

      POSITION CONTROL ECU ASSY (DRIVER SIDE) (VOLTAGE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      SLD+ (P22-4) - GND (P22-7) B - W-B Sliding motor signal (forward) Slide switch FRONT OFF 0 V
      SLD+ (P22-4) - GND (P22-7) B - W-B Sliding motor signal (forward) Slide switch ON 10 to 14 V
      SLD- (P22-3) - GND (P22-7) B-R - W-B Sliding motor signal (rearward) Slide switch REAR OFF 0 V
      SLD- (P22-3) - GND (P22-7) B-R - W-B Sliding motor signal (rearward) Slide switch ON 10 to 14 V
      FRV+ (P22-10) - GND (P22-7) W-R - W-B Front vertical motor signal (upward) Front vertical switch UP OFF 0 V
      FRV+ (P22-10) - GND (P22-7) W-R - W-B Front vertical motor signal (upward) Front vertical switch ON 10 to 14 V
      FRV- (P22-9) - GND (P22-7) W-G - W-B Front vertical motor signal (downward) Front vertical switch DOWN OFF 0 V
      FRV- (P22-9) - GND (P22-7) W-G - W-B Front vertical motor signal (downward) Front vertical switch ON 10 to 14 V
      LFT+ (P22-6) - GND (P22-7) Y-G - W-B Lifter motor signal (upward) Lifter switch UP OFF 0 V
      LFT+ (P22-6) - GND (P22-7) Y-G - W-B Lifter motor signal (upward) Lifter switch ON 10 to 14 V
      LFT- (P22-5) - GND (P22-7) Y-R - W-B Lifter motor signal (downward) Lifter switch DOWN OFF 0 V
      LFT- (P22-5) - GND (P22-7) Y-R - W-B Lifter motor signal (downward) Lifter switch ON 10 to 14 V
      RCL+ (P22-2) - GND (P22-7) L-R - W-B Reclining motor signal (forward) Reclining switch FRONT OFF 0 V
      RCL+ (P22-2) - GND (P22-7) L-R - W-B Reclining motor signal (forward) Reclining switch ON 10 to 14 V
      RCL- (P22-1) - GND (P22-7) L - W-B Reclining motor signal (rearward) Reclining switch REAR OFF 0 V
      RCL- (P22-1) - GND (P22-7) L - W-B Reclining motor signal (rearward) Reclining switch ON 10 to 14 V
      SSRS (P21-14) - GND (P22-7) LG - W-B Slide direction position signal Slide operation Varies between 0 to 8 V
      SSFV (P21-3) - GND (P22-7) R - W-B Front vertical direction position signal Front vertical operation Varies between 0 to 8 V
      SSRV (P21-4) - GND (P22-7) GR - W-B Lifter position signal Lifter operation Varies between 0 to 8 V
      SSRR (P21-5) - GND (P22-7) P-B - W-B Reclining position signal Reclining operation Varies between 0 to 8 V
      PVCC (P21-6) - GND (P22-7) V - W-B Position sensor power supply Power seat operation 0 to 5 V
      SLDF (P21-15) - GND (P22-7) L - W-B Slide switch signal (forward) Slide switch FRONT OFF 10 to 14 V
      SLDF (P21-15) - GND (P22-7) L - W-B Slide switch signal (forward) Slide switch ON 0 V
      SLDR (P21-16) - GND (P22-7) L-B - W-B Slide switch signal (rearward) Slide switch REAR OFF 10 to 14 V
      SLDR (P21-16) - GND (P22-7) L-B - W-B Slide switch signal (rearward) Slide switch ON 0 V
      FUP (P21-19) - GND (P22-7) L-Y - W-B Front vertical switch (upward) Front vertical switch UP OFF 10 to 14 V
      FUP (P21-19) - GND (P22-7) L-Y - W-B Front vertical switch (upward) Front vertical switch ON 0 V
      FDWN (P21-7) - GND (P22-7) L-R - W-B Front vertical switch signal (downward) Front vertical switch DOWN OFF 10 to 14 V
      FDWN (P21-7) - GND (P22-7) L-R - W-B Front vertical switch signal (downward) Front vertical switch ON 0 V
      LUP (P21-17) - GND (P22-7) Y-G - W-B Lifter switch signal (upward) Lifter switch UP OFF 10 to 14 V
      LUP (P21-17) - GND (P22-7) Y-G - W-B Lifter switch signal (upward) Lifter switch ON 0 V
      LDWN (P21-18) - GND (P22-7) Y - W-B Lifter switch signal (downward) Lifter switch DOWN OFF 10 to 14 V
      LDWN (P21-18) - GND (P22-7) Y - W-B Lifter switch signal (downward) Lifter switch ON 0 V
      RCLF (P21-21) - GND (P22-7) Y-R - W-B Reclining switch signal (forward) Reclining switch FRONT OFF 10 to 14 V
      RCLF (P21-21) - GND (P22-7) Y-R - W-B Reclining switch signal (forward) Reclining switch ON 0 V
      RCLR (P21-22) - GND (P22-7) Y-B - W-B Reclining switch signal (rearward) Reclining switch REAR OFF 10 to 14 V
      RCLR (P21-22) - GND (P22-7) Y-B - W-B Reclining switch signal (rearward) Reclining switch ON 0 V

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

  2. INSPECT POSITION CONTROL ECU ASSY (PASSENGER SIDE) 
    Fig 2: Inspecting Position Control ECU Assy (Passenger Side)
    G02956852Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P23 and P24 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.

      Standard: 

      POSITION CONTROL ECU ASSY (PASSENGER SIDE) (VOLTAGE AND RESISTANCE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +B (P24-8) - GND (P24-7) L-W - W-B Battery Always 10 to 14 V
      SYSB (P23-9) - GND (P24-7) L-O - W-B Battery Always 10 to 14 V
      SGND (P23-13) - GND (P24-7) W-B - W-B Ground Always Below 1 ohms
      GND (P24-7) - Body ground W-B - Body ground Ground Always Below 1 ohms

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

    3. Reconnect the P23 and P24 ECU connectors.
    4. Initialize the front power seat (see INITIALIZATION  ).
    5. Measure the voltage of the connectors.

      Standard: 

      POSITION CONTROL ECU ASSY (PASSENGER SIDE) (VOLTAGE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      SLD+ (P24-4) - GND (P24-7) B - W-B Sliding motor signal (forward) Slide switch FRONT OFF 0 V
      SLD+ (P24-4) - GND (P24-7) B - W-B Sliding motor signal (forward) Slide switch ON 10 to 14 V
      SLD- (P24-3) - GND (P24-7) B-R - W-B Sliding motor signal (rearward) Slide switch REAR OFF 0 V
      SLD- (P24-3) - GND (P24-7) B-R - W-B Sliding motor signal (rearward) Slide switch ON 10 to 14 V
      FRV+ (P24-10) - GND (P24-7) W-R - W-B Front vertical motor signal (upward) Front vertical switch UP OFF 0 V
      FRV+ (P24-10) - GND (P24-7) W-R - W-B Front vertical motor signal (upward) Front vertical switch ON 10 to 14 V
      FRV- (P24-9) - GND (P24-7) W-G - W-B Front vertical motor signal (downward) Front vertical switch DOWN OFF 0 V
      FRV- (P24-9) - GND (P24-7) W-G - W-B Front vertical motor signal (downward) Front vertical switch ON 10 to 14 V
      LFT+ (P24-6) - GND (P24-7) Y-G - W-B Lifter motor signal (upward) Lifter switch UP OFF 0 V
      LFT+ (P24-6) - GND (P24-7) Y-G - W-B Lifter motor signal (upward) Lifter switch ON 10 to 14 V
      LFT- (P24-5) - GND (P24-7) Y-R - W-B Lifter motor signal (downward) Lifter switch DOWN OFF 0 V
      LFT- (P24-5) - GND (P24-7) Y-R - W-B Lifter motor signal (downward) Lifter switch ON 10 to 14 V
      RCL+ (P24-2) - GND (P24-7) L-R - W-B Reclining motor signal (forward) Reclining switch FRONT OFF 0 V
      RCL+ (P24-2) - GND (P24-7) L-R - W-B Reclining motor signal (forward) Reclining switch ON 10 to 14 V
      RCL- (P24-1) - GND (P24-7) L - W-B Reclining motor signal (rearward) Reclining switch REAR OFF 0 V
      RCL- (P24-1) - GND (P24-7) L - W-B Reclining motor signal (rearward) Reclining switch ON 10 to 14 V
      SSRS (P23-14) - GND (P24-7) LG - W-B Slide direction position signal Slide operation Varies between 0 to 8 V
      SSFV (P23-3) - GND (P24-7) R - W-B Front vertical direction position signal Front vertical operation Varies between 0 to 8 V
      SSRV (P23-4) - GND (P24-7) GR - W-B Lifter position signal Lifter operation Varies between 0 to 8 V
      SSRR (P23-5) - GND (P24-7) P-B - W-B Reclining position signal Reclining operation Varies between 0 to 8 V
      PVCC (P23-6) - GND (P24-7) V - W-B Position sensor power supply Power seat operation 0 to 5 V
      SLDF (P23-15) - GND (P24-7) L - W-B Slide switch signal (forward) Slide switch FRONT OFF 10 to 14 V
      SLDF (P23-15) - GND (P24-7) L - W-B Slide switch signal (forward) Slide switch ON 0 V
      SLDR (P23-16) - GND (P24-7) L-B - W-B Slide switch signal (rearward) Slide switch REAR OFF 10 to 14 V
      SLDR (P23-16) - GND (P24-7) L-B - W-B Slide switch signal (rearward) Slide switch ON 0 V
      FUP (P23-19) - GND (P24-7) L-Y - W-B Front vertical switch signal (upward) Front vertical switch UP OFF 10 to 14 V
      FUP (P23-19) - GND (P24-7) L-Y - W-B Front vertical switch signal (upward) Front vertical switch ON 0 V
      FDWN (P23-7) - GND (P24-7) L-R - W-B Front vertical switch signal (downward) Front vertical switch DOWN OFF 10 to 14 V
      FDWN (P23-7) - GND (P24-7) L-R - W-B Front vertical switch signal (downward) Front vertical switch ON 0 V
      LUP (P23-17) - GND (P24-7) Y-G - W-B Lifter switch signal (upward) Lifter switch UP OFF 10 to 14 V
      LUP (P23-17) - GND (P24-7) Y-G - W-B Lifter switch signal (upward) Lifter switch ON 0 V
      LDWN (P23-18) - GND (P24-7) Y - W-B Lifter switch signal (downward) Lifter switch DOWN OFF 10 to 14 V
      LDWN (P23-18) - GND (P24-7) Y - W-B Lifter switch signal (downward) Lifter switch ON 0 V
      RCLF (P23-21) - GND (P24-7) Y-R - W-B Reclining switch signal (forward) Reclining switch FRONT OFF 10 to 14 V
      RCLF (P23-21) - GND (P24-7) Y-R - W-B Reclining switch signal (forward) Reclining switch ON 0 V
      RCLR (P23-22) - GND (P24-7) Y-B - W-B Reclining switch signal (rearward) Reclining switch REAR OFF 10 to 14 V
      RCLR (P23-22) - GND (P24-7) Y-B - W-B Reclining switch signal (rearward) Reclining switch ON 0 V

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

  3. CHECK MULTIPLEX NETWORK DOOR ECU FRONT LH (DRIVER DOOR ECU) 
    Fig 3: Checking Multiplex Network Door ECU Front LH (Driver Door ECU)
    G02956853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D19 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.

      Standard: 

      MULTIPLEX NETWORK DOOR ECU FRONT LH (DRIVER DOOR ECU) (VOLTAGE AND RESISTANCE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (D19-1) - Body ground W-B - Body ground Ground Always Below 1 ohms
      CPUB (D19-4) - GND (D19-1) L-O - W-B Battery (ECU power source) Always 10 to 14 V
      SIG (D19-5) - GND (D19-1) V-W - W-B Ignition power supply Ignition switch OFF 0 V
      SIG (D19-5) - GND (D19-1) V-W - W-B Ignition power supply Ignition switch ON 10 to 14 V
      BDR (D19-6) - GND (D19-1) B-R - W-B Battery (ECU power source) Always 10 to 14 V

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

    3. Reconnect the D19 ECU connector.
    4. Measure the voltage of the connector.

      Standard: 

      MULTIPLEX NETWORK DOOR ECU FRONT LH (DRIVER DOOR ECU) (VOLTAGE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MM (D18-24) - MSWE (D18-23) L - W-B Memory SET switch signal Seat memory SET switch OFF 10 to 14 V
      MM (D18-24) - MSWE (D18-23) L - W-B Memory SET switch signal Seat memory SET switch ON 0 V
      M1 (D18-16) - MSWE (D18-23) Y - W-B Memory 1 switch signal Seat memory 1 switch OFF 10 to 14 V
      M1 (D18-16) - MSWE (D18-23) Y - W-B Memory 1 switch signal Seat memory 1 switch ON 0 V
      M2 (D18-15) - MSWE (D18-23) G - W-B Memory 2 switch signal Seat memory 2 switch OFF 10 to 14 V
      M2 (D18-15) - MSWE (D18-23) G - W-B Memory 2 switch signal Seat memory 2 switch ON 0 V

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

  4. CHECK MULTIPLEX NETWORK DOOR ECU FRONT RH (PASSENGER DOOR ECU) 
    Fig 4: Checking Multiplex Network Door ECU Front RH (Passenger Door ECU)
    G02956854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P11 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.

      Standard: 

      MULTIPLEX NETWORK DOOR ECU FRONT RH (PASSENGER DOOR ECU) (VOLTAGE AND RESISTANCE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P11-1) - Body ground W-B - Body ground Ground Always Below 1 ohms
      CPUB (P11-4) - GND (P11-1) L-O - W-B Battery (ECU power source) Always 10 to 14 V
      SIG (P11-5) - GND (P11-1) V-W - W-B Ignition power supply Ignition switch OFF 0 V
      SIG (P11-5) - GND (P11-1) V-W - W-B Ignition power supply Ignition switch ON 10 to 14 V
      BDR (P11-6) - GND (P11-1) G-Y - W-B Battery (ECU power source) Always 10 to 14 V

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

    3. Reconnect the P11 ECU connector.
    4. Measure the voltage of the connector.

      Standard: 

      MULTIPLEX NETWORK DOOR ECU FRONT RH (PASSENGER DOOR ECU) (VOLTAGE)

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MM (P10-24) - MSWE (P10-23) L - W-B Memory SET switch signal Seat memory SET switch OFF 10 to 14 V
      MM (P10-24) - MSWE (P10-23) L - W-B Memory SET switch signal Seat memory SET switch ON 0 V
      M1 (P10-16) - MSWE (P10-23) Y - W-B Memory 1 switch signal Seat memory 1 switch OFF 10 to 14 V
      M1 (P10-16) - MSWE (P10-23) Y - W-B Memory 1 switch signal Seat memory 1 switch ON 0 V
      M2 (P10-15) - MSWE (P10-23) G - W-B Memory 2 switch signal Seat memory 2 switch OFF 10 to 14 V
      M2 (P10-15) - MSWE (P10-23) G - W-B Memory 2 switch signal Seat memory 2 switch ON 0 V

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

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