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Terminals Of Ecu

  1. MULTIPLEX NETWORK MASTER SWITCH 
    1. Disconnect the P22 switch connector.
      Fig 1: Identifying P22 Switch Connector
      G05274235Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance of each terminal according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P22-2) - Body ground W-B - Body ground Ground Constant Below 1 Ω

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BDR (P22-10) - GND (P22-2) G - W-B +B power supply Constant 10 to 14 V
      CPUB (P22-9) - GND (P22-2) L - B-W-B +B power supply Constant 10 to 14 V
      SIG (P22-20) - GND (P22-2) BR - W-B Ignition power supply Ignition switch OFF → ON 0 V → 10 to 14 V

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

    3. Reconnect the P22 switch connector and reset the power window motor.
    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      UP (P22-1) - GND (P22-2) GR - W-B Power window motor UP output Ignition switch ON, Driver side power window switch OFF → UP (Manual operation) 0 V → 10 to 14 V
      UP (P22-1) - GND (P22-2) GR - W-B Power window motor UP output Ignition switch ON, Driver side power window fully open → Driver side power window switch UP (AUTO operation) → Driver side power window fully closed 0 V → 10 to 14 V → 0 V
      DN (P22-11) - GND (P22-2) B - W-B Power window motor DOWN output Ignition switch ON, Driver side power window switch OFF → DOWN (Manual operation) 10 to 14 V → 0 V
      DN (P22-11) - GND (P22-2) B - W-B Power window motor DOWN output Ignition switch ON, Driver side power window fully closed → Driver side power window switch DOWN (AUTO operation) → Driver side power window fully open 10 to 14 V → 0 V
      PWS (P22-6) - GND (P22-2) O - W-B Power window lock switch output Ignition switch ON, Power window lock switch UNLOCK → LOCK 10 to 14 V → 0 V
      VCC (P22-19) - GND (P22-2) O - W-B Power window motor power source Constant 10 to 14 V
  2. CHECK MULTIPLEX NETWORK SWITCH (FRONT PASSENGER SIDE) 
    Fig 2: Identifying Multiplex Network Switch (Front Passenger Side) Connector Terminals
    G05274236Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P19 switch connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P19-7) - Body ground W-B - Body ground Ground Constant Below 1 Ω

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BDR (P19-12) - GND (P19-7) G - W-B +B power supply Constant 10 to 14 V

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

    3. Reconnect the P19 switch connector and reset power window motor.
    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      UP (P19-6) - GND (P19-7) GR - W-B Power window motor UP output Ignition switch ON, Regulator switch OFF → UP (Manual operation) 0 V → 10 to 14 V
      UP (P19-6) - GND (P19-7) GR - W-B Power window motor UP output Ignition switch ON, Front passenger side power window fully open → Regulator switch UP (AUTO operation) → Front passenger side power window fully closed 0 V → 10 to 14 V → 0 V
      DN (P19-1) - GND (P19-7) B - W-B Power window motor DOWN output Ignition switch ON, Regulator switch OFF → DOWN (Manual operation) 10 to 14 V → 0 V
      DN (P19-1) - GND (P19-7) B - W-B Power window motor DOWN output Ignition switch ON, Front passenger side power window fully closed → Regulator switch DOWN (AUTO operation) → Front passenger side power window fully open 10 to 14 V → 0 V
      PCT (P19-11) - GND (P19-7) O - W-B Power window lock switch output Ignition switch ON, Power window lock switch UNLOCK → LOCK 10 to 14 V → 0 V
      VCC (P19-5) - SGND (P19-8) LG - R Power window motor power source Constant 10 to 14 V

      If the result is not as specified, the multiplex network switch may have a malfunction.

  3. CHECK MULTIPLEX NETWORK SWITCH (REAR LH) 
    Fig 3: Identifying Multiplex Network Switch (Rear LH) P20 Switch Connector Terminals
    G05274237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P20 switch connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P20-7) - Body ground W-B - Body ground Ground Constant Below 1 Ω
      SEL2 (P20-10) - GND (P20-7) W-B - W-B Terminal for identification of rear LH switch Constant Below 1 Ω

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BDR (P20-12) - GND (P20-7) LG - W-B +B power supply Constant 10 to 14 V
    3. Reconnect the P20 switch connector and reset the power window motor.
    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATIONS TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      UP (P20-6) - GND (P20-7) V - W-B Power window motor UP output Ignition switch ON, Regulator switch OFF → UP (Manual operation) 0 V → 10 to 14 V
      UP (P20-6) - GND (P20-7) V - W-B Power window motor UP output Ignition switch ON, Rear LH power window fully open → Regulator switch UP (AUTO operation) → Rear LH power window fully closed 0 V → 10 to 14 V → 0 V
      DN (P20-1) - GND (P20-7) W - W-B Power window motor DOWN output Ignition switch ON, Regulator switch OFF → DOWN (Manual operation) 10 to 14 V → 0 V
      DN (P20-1) - GND (P20-7) W - W-B Power window motor DOWN output Ignition switch ON, Rear LH power window fully closed → Regulator switch DOWN (AUTO operation) → Rear LH power window fully open 10 to 14 V → 0 V
      PCT1 (P20-11) - GND (P20-7) GR - W-B Power window lock switch output Ignition switch ON, Power window lock switch UNLOCK → LOCK 10 to 14 V → 0 V
      VCC (P20-5) - SGND (P20-8) L - BR Power window motor power source Constant 10 to 14 V

      If the result is not as specified, the multiplex network switch may have a malfunction.

  4. CHECK MULTIPLEX NETWORK SWITCH (REAR RH) 
    Fig 4: Identifying Multiplex Network Switch (Rear RH) P21 Switch Connector Terminals
    G05274238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P21 switch connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P21-7) - Body ground W-B - Body ground Ground Constant Below 1 Ω
      SEL1 (P21-9) - GND (P21-7) W-B - W-B Terminal for identification of rear RH switch Constant Below 1 Ω

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BDR (P21-12) - GND (P21-7) LG - W-B +B power supply Constant 10 to 14 V
    3. Reconnect the P21 switch connector and reset the power window motor.
    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      UP (P21-6) - GND (P21-7) V - W-B Power window motor UP output Ignition switch ON, Regulator switch OFF → UP (Manual operation) 0 V → 10 to 14 V
      UP (P21-6) - GND (P21-7) V - W-B Power window motor UP output Ignition switch ON, Rear RH power window fully open → Regulator switch UP (AUTO operation) → Rear RH power window fully closed 0 V → 10 to 14 V → 0 V
      DN (P21-1) - GND (P21-7) W - W-B Power window motor DOWN output Ignition switch ON, Regulator switch OFF → DOWN (Manual operation) 10 to 14 V → 0 V
      DN (P21-1) - GND (P21-7) W - W-B Power window motor DOWN output Ignition switch ON, Rear RH power window fully closed → Regulator switch DOWN (AUTO operation) → Rear RH power window fully open 10 to 14 V → 0 V
      PCT1 (P21-11) - GND (P21-7) GR - W-B Power window lock switch output Ignition switch ON, Power window lock switch UNLOCK → LOCK 10 to 14 V → 0 V
      VCC (P21-5) - SGND (P21-8) L - BR Power window motor power source Constant 10 to 14 V

      If the result is not as specified, the multiplex network switch may have a malfunction.

  5. CHECK INSTRUMENT PANEL J/B (BODY ECU) 
    Fig 5: Identifying Instrument Panel J/B (Body ECU) Connector Terminals
    G05274239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the B4, B5 and B6 ECU connectors.
    2. Disconnect the 1F and 1M J/B connectors.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      KSW (B4-21) - Body ground B - Body ground Key unlock warning switch input No key in ignition key cylinder → Key inserted 10 kΩ or higher → Below 1 Ω
      PCTY (B5-23) - Body ground L - W-B Front passenger side courtesy switch input Passenger side door CLOSED → OPEN 10 kΩ or higher → Below 1 Ω
      DCTY (B6-14) - Body ground L - Body ground Driver side courtesy switch input Driver side door CLOSED → OPEN 10 kΩ or higher → Below 1 Ω
      GND1 (1F-10) - Body ground W-B - Body ground Ground Constant Below 1 Ω
      GND2 (1M-9) - Body ground W-B - Body ground Ground Constant Below 1 Ω

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

    4. Reconnect the B4, B5 and B6 ECU connectors.
    5. Reconnect the 1M and 1F J/B connectors.
    6. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      KSW (B4-21) - Body - ground B - Body ground Key unlock warning switch input No key in ignition key cylinder → Key inserted 10 to 14 V → 0 V

      If the result is not as specified, the instrument panel J/B (body ECU) may have a malfunction.

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