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Terminals Of Ecu

  1. CHECK MULTIPLEX NETWORK FRONT DOOR ECU LH (DRIVER DOOR ECU) 
    Fig 1: Identifying Multiplex Network Front Door ECU Connector Terminals
    G05292868Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D17, D18 and D19 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      ECU CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (D19-1) - Body ground W-B - Body ground Ground Always Below 1 Q
      CPUB (D19-4) - GND (D19-1) L-O - W-B +B (CPUB) power supply Always 10 to 14 V
      SIG (D19-5) - GND (D19-1) V-W - W-B +B (SIG) power supply Ignition switch OFF Below 1 V
      SIG (D19-5) - GND (D19-1) V-W - W-B +B (SIG) power supply Ignition switch ON 10 to 14 V
      BDR (D19-6) - GND (D19-1) B-R - W-B +B (BDR) power supply Always 10 to 14 V
      A+ (D18-6) - A- (D18-5) L-R - L-B
      • Door lock motor LOCK drive output
      • Door lock motor UNLOCK drive output
      		 Always Below 1 Ω
      LSW (D18-3) - CPSE (D18-20) B-R-L Door lock position switch input Door lock knob LOCK 10 kΩ or higher
      LSW (D18-3) - CPSE (D18-20) B - R-L Door lock position switch input Door lock knob UNLOCK Below 1 Ω
      KL (D18-13) - CPSE (D18-20) L-B - R-L Door key-linked door lock input Using the key, operate the driver's door lock cylinder OFF 10 kΩ or higher
      KL (D18-13) - CPSE (D18-20) L-B - R-L Door key-linked door lock input Using the key, operate the driver's door lock cylinder LOCK Below 1 Ω
      KUL (D18-4) - CPSE (D18-20) L-W - R-L Door key-linked door unlock input Using the key, operate the driver's door lock cylinder OFF 10 kΩ or higher
      KUL (D18-4) - CPSE (D18-20) L-W - R-L Door key-linked door unlock input Using the key, operate the driver's door lock cylinder UNLOCK Below 1 Ω
      ML (D17-8) - PWE (D17-29) W-Y Door control switch (master switch) LOCK input Door control switch (manual operation) OFF 10 kΩ or higher
      ML (D17-8) - PWE (D17-29) W-Y Door control switch (master switch) LOCK input Door control switch (manual operation) LOCK Below 1 Ω
      MUL (D17-19) - PWE (D17-29) W-R-Y Door control switch (master switch) UNLOCK input Door control switch (manual operation) OFF 10 kΩ or higher
      MUL (D17-19) - PWE (D17-29) W-R-Y Door control switch (master switch) UNLOCK input Door control switch (manual operation) UNLOCK Below 1 Ω
      CTY (D17-27) - GND (D19-1) R-W - W-B Driver door courtesy switch input Driver's door CLOSED 10 kΩ or higher
      CTY (D17-27) - GND (D19-1) R-W - W-B Driver door courtesy switch input Driver's door OPEN Below 1 Ω

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

    3. Connect the D17, D18 and D19 ECU connectors.
    4. Measure the voltage of the connectors.
      ECU CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      A+ (D18-6) - GND (D19-1) L-R - W-B Door lock motor LOCK drive output Door control switch (manual operation, key lock-in prevention) 1: OFF → 2: LOCK → 3: OFF
      1. Below 1 V
      2. 10 to 14 V (0.1 seconds)
      3. Below 1 V
      A- (D18-5) - GND (D19-1) L-B - W-B Door lock motor UNLOCK drive output Door control switch (manual operation, key lock-in prevention) 1: OFF → 2: UNLOCK → 3: OFF
      1. Below 1 V
      2. 10 to 14 V (0.1 seconds)
      3. Below 1 V

      If the result is not as specified, there may be a malfunction on the ECU.

  2. CHECK MULTIPLEX NETWORK FRONT DOOR ECU RH (PASSENGER DOOR ECU) 
    Fig 2: Identifying P9, P10 And P11 ECU Connectors Terminals
    G05292869Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P9, P10 and P11 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      ECU CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P11-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (P11-4) - GND (P11-1) L-O - W-B +B (CPUB) power supply Always 10 to 14 V
      SIG (P11-5) - GND (P11-1) V-W - W-B +B (SIG) power supply Ignition switch OFF Below 1 V
      SIG (P11-5) - GND (P11-D V-W - W-B +B (SIG) power supply Ignition switch ON 10 to 14 V
      BDR (P11-6) - GND (P11-D G-Y - W-B +B (BDR) power supply Always 10 to 14 V
      A+ (P10-6) - A- (P10-5) L-R - L-B
      • Door lock motor LOCK drive output
      • Door lock motor UNLOCK drive output
      		 Always Below 1 Ω
      LSW (P10-3) - CPSE (P10-20) B - R - L Door lock position switch input Door lock knob LOCK 10 kΩ or higher
      LSW (P10-3) - CPSE (P10-20) B - R - L Door lock position switch input Door lock knob UNLOCK Below 1 Ω
      ML (P9-8) - PWE (P9-29) G-R - Y Door control switch LOCK input Door control switch (manual operation) OFF 10 kΩ or higher
      ML (P9-8) - PWE (P9-29) G-R - Y Door control switch LOCK input Door control switch (manual operation) LOCK Below 1 Ω
      MUL (P9-19) - PWE (P9-29) G-B - Y Door control switch UNLOCK input Door control switch (manual operation) OFF 10 kΩ or higher
      MUL (P9-19) - PWE (P9-29) G-B - Y Door control switch UNLOCK input Door control switch (manual operation) UNLOCK Below 1 Ω
      CTY (P9-27) - GND (P11-1) R-W - W-B Passenger door courtesy switch input Passenger's door CLOSED 10 kΩ or higher
      CTY (P9-27) - GND (P11-1) R-W - W-B Passenger door courtesy switch input Passenger's door OPEN Below 1 Ω

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

    3. Reconnect the P9, P10 and P11 ECU connectors.
    4. Measure the voltage of the connectors.
      ECU CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      A+ (P10-6) - GND (P11-1) L-R - W-B Door lock motor LOCK drive output Door control switch (manual operation, key lock-in prevention) 1: OFF → 2: LOCK → 3: OFF
      1. Below 1 V
      2. 10 to 14 V (0.1 seconds)
      3. Below 1 V
      A- (P10-5) - GND (P11-1) L-B - W-B Door lock motor UNLOCK drive output Door control switch (manual operation, key lock-in prevention) 1: OFF → 2: UNLOCK → 3: OFF
      1. Below 1 V
      2. 10 to 14 V (0.1 seconds)
      3. Below 1V

      If the result is not as specified, there may be a malfunction on the ECU.

  3. CHECK THEFT WARNING ECU 
    Fig 3: Identifying Theft Warning T7 ECU Connector Terminals
    G05292870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T7 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      ECU CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (T7-20) - Body ground W-B - Body ground Ground Always Below 1 Ω
      +B2 (T7-21) - GND (T6-20) B-O - W-B +B (+B2) power supply Always 10 to 14 V
      IG (T7-24) - GND (T6-20) V-W - W-B IG power supply Ignition switch OFF Below 1 V
      IG (T7-24) - GND (T6-20) V-W - W-B IG power supply Ignition switch ON 10 to 14 V
      +B (T7-1) - GND (T6-20) L-O - W-B +B power supply Always 10 to 14 V

      If the result is not as specified, there may be a malfunction on the ECU.

  4. CHECK TRANSPONDER KEY ECU 
    Fig 4: Identifying Transponder Key T13 ECU Connector Terminals
    G05292871Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T13 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      ECU CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (T13-14) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (T13-1) - GND (T13-14) L-O - W-B +B (CPUS) power supply Always 10 to 14 V
      IG2 (T13-2) - GND (T13-14) G-B - W-B IG (IG2) power supply Ignition switch OFF Below 1 V
      IG2 (T13-2) - GND (T13-14) G-B - W-B IG (IG2) power supply Ignition switch ON 10 to 14 V
      KSW (T13-3) - GND (T13-14) LG-B - W-B Key unlock warning switch input No key in ignition key cylinder Below 1 V
      KSW (T13-3) - GND (T13-14) LG-B - W-B Key unlock warning switch input Key inserted in ignition key cylinder 10 to 14 V

      If the result is not as specified, there may be a malfunction on the ECU.

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