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Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH 
    Fig 1: Identifying Terminals Of ECU Connector
    G04475978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P17 switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      ECU CONNECTOR TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BDR (P17-11) - Body ground V - Body ground +B (BDR) power supply Always 10 to 14 V
      BW (P17-7) - Body ground W - Body ground +B (BW) power supply Power switch ON (IG) 10 to 14 V
      BW (P17-7) - Body ground W - Body ground +B (BW) power supply Power switch OFF Below 1 V
      E (P17-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L (P17-5) - Body ground LG - Body ground Door control switch door lock input Door control switch LOCK Below 1 Ω
      L (P17-5) - Body ground LG - Body ground Door control switch door lock input Door control switch OFF 10 kΩ or higher
      UL (P17-8) - Body ground BR - Body ground Door control switch door unlock input Door control switch UNLOCK Below 1 Ω
      UL (P17-8) - Body ground BR - Body ground Door control switch door unlock input Door control switch OFF 10 kΩ or higher

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

  2. CHECK DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU) 
    Fig 2: Identifying Driver Side Junction Block Connector Terminals (Main Bodies ECU)
    G04475979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 1A, 1B, 1D, 1E and 1H junction block connectors.
    2. Disconnect the B5 and B7 ECU connectors.
    3. Measure the voltage and resistance of the wire harness side connectors.
      DRIVER SIDE JUNCTION BLOCK CONNECTOR TERMINALS

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ALTB (1B-1) - Body ground W - Body ground +B (power system, generator system) power supply Always 10 to 14 V
      ECUB (1A-30) - Body ground R - Body ground +B (ECUB) power supply Always 10 to 14 V
      GND (1E-17) - Body ground W-B - Body ground Ground Always Below 1 Ω
      KSW (1E-26) - Body ground*1
      KSW (1E-23) - Body ground*2      		 Y - Body ground Key unlock warning switch input Key inserted Below 1 Ω
      KSW (1E-26) - Body ground*1
      KSW (1E-23) - Body ground*2      		 Y - Body ground Key unlock warning switch input No key in key slot 10 kΩ or higher
      L1 (1H-4) - Body ground LG - Body ground Door control switch (master switch and passenger side switch) lock input Door control switch (master switch or passenger side switch) LOCK Below 1 Ω
      L1 (1H-4) - Body ground LG - Body ground Door control switch (master switch and passenger side switch) lock input Door control switch (master switch or passenger side switch) OFF 10 kΩ or higher
      L1 (1H-13) - Body ground B - Body ground Door control switch (master switch and passenger side switch) lock input Door control switch (master switch or passenger side switch) LOCK Below 1 Ω
      L1 (1H-13) - Body ground B - Body ground Door control switch (master switch and passenger side switch) lock input Door control switch (master switch or passenger side switch) OFF 10 kΩ or higher
      UL1 (1H-5) - Body ground BR - Body ground Door control switch (master switch and passenger side switch) unlock input Door control switch (master switch or passenger side switch) UNLOCK Below 1 Ω
      UL1 (1H-5) - Body ground BR - Body ground Door control switch (master switch and passenger side switch) unlock input Door control switch (master switch or passenger side switch) OFF 10 kΩ or higher
      UL1 (1H-14) - Body ground V - Body ground Door control switch (master switch and passenger side switch) unlock input Door control switch (master switch or passenger side switch) UNLOCK Below 1 Ω
      UL1 (1H-14) - Body ground V - Body ground Door control switch (master switch and passenger side switch) unlock input Door control switch (master switch or passenger side switch) OFF 10 kΩ or higher
      L2 (1H-16) - Body ground
      L - Body ground      		 L - Body ground Driver side door key-linked door lock input Driver side door key cylinder LOCK Below 1 Ω
      L2 (1H-16) - Body ground
      L - Body ground      		 L - Body ground Driver side door key-linked door lock input Driver side door key cylinder OFF 10 kΩ or higher
      UL3 (B7-9) - Body ground P - Body ground Driver side door key-linked door unlock input Driver side door key cylinder UNLOCK Below 1 Ω
      UL3 (B7-9) - Body ground P - Body ground Driver side door key-linked door unlock input Driver side door key cylinder OFF 10 kΩ or higher
      LSWD (B7-25) - Body ground LG - Body ground Driver side door lock position switch input Driver side door LOCK Below 1 Ω
      LSWD (B7-25) - Body ground LG - Body ground Driver side door lock position switch input Driver side door UNLOCK 10 kΩ or higher
      LSWP (B7-10) - Body ground Y - Body ground Passenger side door lock position switch input Passenger side door LOCK Below 1 Ω
      LSWP (B7-10) - Body ground Y - Body ground Passenger side door lock position switch input Passenger side door UNLOCK 10 kΩ or higher
      LSWR (B5-10) - Body ground O - Body ground Rear doors lock position switch input Rear doors LOCK Below 1 Ω
      LSWR (B5-10) - Body ground O - Body ground Rear doors lock position switch input Rear doors UNLOCK 10 kΩ or higher
      DCTY (1D-21) - Body ground V - Body ground Driver side courtesy switch input Driver side door open Below 1 Ω
      DCTY (1D-21) - Body ground V - Body ground Driver side courtesy switch input Driver side door closed 10 kΩ or higher
      PCTY (1D-24) - Body ground BR - Body ground Passenger side courtesy switch input Passenger side door open Below 1 Ω
      PCTY (1D-24) - Body ground BR - Body ground Passenger side courtesy switch input Passenger side door closed 10 kΩ or higher
      RCTY (1D-5) - Body ground R - Body ground Rear LH courtesy switch input Rear LH door open Below 1 Ω
      RCTY (1D-5) - Body ground R - Body ground Rear LH courtesy switch input Rear LH door closed 10 kΩ or higher
      RCTY (1D-20) - Body ground R - Body ground Rear RH courtesy switch input Rear RH door open Below 1 Ω
      RCTY (1D-20) - Body ground R - Body ground Rear RH courtesy switch input Rear RH door closed 10 kΩ or higher
      BCTY (1D-7) - Body ground R - Body ground Back door courtesy switch input Back door open Below 1 Ω
      BCTY (1D-7) - Body ground R - Body ground Back door courtesy switch input Back door closed 10 kΩ or higher
      BDSU (B7-12) - Body ground P - Body ground Back door opener switch input Back door opener switch ON Below 1 Ω
      BDSU (B7-12) - Body ground P - Body ground Back door opener switch input Back door opener switch OFF 10 kΩ or higher

      HINT:

      *1: w/ Smart key system

      *2: w/o Smart key system

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

    4. Reconnect the 1A, 1B, 1D, 1E and 1H junction block connectors.
    5. Reconnect the B5 and B7 ECU connectors.
    6. Measure the voltage of the connectors.
      ECU CONNECTOR TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ACT+ (1H-8) - Body ground Y - Body ground Door lock motor LOCK drive output (driver side door) Door control switch
      (master switch or passenger side switch) or driver side door key cylinder
      OFF -->
      LOCK -->
      OFF      		 Below 1 V -->
      10 to 14 V -->
      Below 1 V
      ACT+ (1D-3) - Body ground Y - Body ground Door lock motor LOCK drive output (passenger side door) Door control switch
      (master switch or passenger side switch) or driver side door key cylinder
      OFF -->
      LOCK -->
      OFF      		 Below 1 V -->
      10 to 14 V -->
      Below 1 V
      ACT+ (1H-17) - Body ground Y - Body ground Door lock motor LOCK drive output (rear LH and rear RH side door) Door control switch
      (master switch or passenger side switch) or driver side door key cylinder
      OFF -->
      LOCK -->
      OFF      		 Below 1 V -->
      10 to 14 V -->
      Below 1 V
      ACTD (B7-5)) - Body ground G - Body ground Door lock motor UNLOCK drive output (driver side door) Door control switch
      (master switch or passenger side switch) or driver side door key cylinder
      OFF -->
      UNLOCK -->
      OFF      		 Below 1 V -->
      10 to 14 V -->
      Below 1 V
      ACT- (1H-9) - Body ground G - Body ground Door lock motor UNLOCK drive output (passenger side door) Door control switch (master switch or passenger side switch) or driver side door key cylinder
      OFF -->
      UNLOCK -->
      OFF      		 Below 1 V -->
      10 to 14 V -->
      Below 1 V
      ACT- (1D-4) - Body ground G - Body ground Door lock motor UNLOCK drive output (rear LH side door) Door control switch (master switch or passenger side switch) or driver side door key cylinder
      OFF -->
      UNLOCK -->
      OFF      		 Below 1 V -->
      10 to 14 V -->
      Below 1 V
      BACT (B7-1) - Body ground Y - Body ground Back door lock motor OPEN drive output Transmitter switch (back door)
      OFF -->
      UNLOCK -->
      OFF      		 Below 1 V -->
      10 to 14 V -->
      Below 1 V

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

  3. CHECK TRANSPONDER KEY ECU 
    Fig 3: Identifying Transponder Key ECU Connector Terminals
    G04475980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T5 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connectors.
      TRANSPONDER KEY ECU TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CPUB (T5-3) - Body ground L - Body ground +B (CPUB) power supply Always 10 to 14 V
      GND (T5-22) - Body ground W-B - Body ground Ground Always Below 1 Ω
      IG (T5-4) - Body ground O - Body ground IG power supply Power switch ON (IG) 10 to 14 V
      IG (T5-4) - Body ground O - Body ground IG power supply Power switch OFF Below 1 V
      ACC (T5-12) - Body ground P - Body ground ACC power supply Power switch ON (ACC) 10 to 14 V
      ACC (T5-12) - Body ground P - Body ground ACC power supply Power switch OFF Below 1 V
      CUWS (T5-5) - Body ground B - Body ground Halfway switch input Key inserted Below 1 Ω
      CUWS (T5-5) - Body ground B - Body ground Halfway switch input No key in key slot 10 kΩ or higher

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

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