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Terminals Of Ecu

  1. CHECK THEFT WARNING ECU 
    Fig 1: Identifying Theft Warning ECU Connector Terminals
    G05292904Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T7 ECU 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
      IG (T7-24) - GND (T7-20) V-W - W-B Ignition power supply Ignition switch OFF Below 1 V
      IG (T7-24) - GND (T7-20) V-W - W-B Ignition power supply Ignition switch ON 10 to 14 V
      +B (T7-1) - GND (T7-20) L-O - W-B +B power supply Always 10 to 14 V
      +B2 (T7-21) - GND (T7-20) B-O - W-B +B power supply Always 10 to 14 V
      GND (T7-20) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the 17 ECU connector.
    4. Measure the voltage of the connector.
      ECU CONNECTOR TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      RSSI (T7-30) - Body ground Y - Body ground Door control receiver output signal Transmitter switch ON (No key in ignition key cylinder, all doors closed) 6 to 7 V
      RSSI (T7-30) - Body ground Y - Body ground Door control receiver output signal Transmitter switch OFF (No key in ignition key cylinder, all doors closed) Alternating between below 1 V and 6 to 7 V
      RDA (T7-29) - Body ground R - Body ground Door control receiver input signal Transmitter switch ON (No key in ignition key cylinder, all doors closed) Below 1 V
      RDA (T7-29) - Body ground R - Body ground Door control receiver input signal Transmitter switch OFF (No key in ignition key cylinder, all doors closed) Alternating between 6 to 7 V and below 1 V
      RCO (T7-15) - Body ground BR-W - Body ground Power source Transmitter switch ON (No key in ignition key cylinder, all doors closed) Below 1 V
      RCO (T7-15) - Body ground BR-W - Body ground Power source Transmitter switch OFF (No key in ignition key cylinder, all doors closed) 4.6 to 5.4 V
      BZR (T7-4) - BZR2 (T7-5) L-R-W Wireless door lock buzzer Wireless door lock buzzer OFF Below 1 V
      BZR (T7-4) - BZR2 (T7-5) L-R - W Wireless door lock buzzer Wireless door lock buzzer ON Pulse generation

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

  2. CHECK TRANSPONDER KEY ECU 
    Fig 2: Identifying Transponder Key T13 ECU Connector Terminals
    G05292905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T13 ECU 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
      CPUB (T13-1) - GND (T13-14) L-O - W-B Battery (ECU power source) Always 10 to 14 V
      IG2 (T13-2) - GND (T13-14) G-B - W-B Ignition power supply Ignition switch OFF Below 1 V
      IG2 (T13-2) - GND (T13-14) G-B - W-B Ignition power supply Ignition switch ON 10 to 14 V
      KSW (T13-3) - GND (T13-14) LG-B - W-B Unlock warning switch input No key in ignition key cylinder 10 kΩ or higher
      KSW (T13-3) - GND (T13-14) LG-B - W-B Unlock warning switch input Key inserted Below 1 Ω
      GND (T13-14) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

  3. CHECK MULTIPLEX NETWORK FRONT DOOR ECU LH (DRIVER DOOR ECU) 
    Fig 3: Identifying Multiplex Network Front Door D19 ECU Connector Terminals
    G05292906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D19 ECU 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
      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 Below 1 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-D B-R - W-B Battery (ECU power source) Always 10 to 14 V
      CTY (D17-27) - GND (D19-1) R-W - W-B Driver side door courtesy switch Driver side door closed 10 kΩ or higher
      CTY (D17-27) - GND (D19-1) R-W - W-B Driver side door courtesy switch Driver side door open Below 1 Ω
      GND (D19-1) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

  4. CHECK MULTIPLEX NETWORK FRONT DOOR ECU RH (PASSENGER DOOR ECU) 
    Fig 4: Identifying P11 ECU Connector Terminals
    G05292907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P11 ECU 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
      CPUB (P11-4) - GND (P11-1) L-O - W-B Battery (ECU power source) Always 10 to 14V
      SIG (P11-5) - GND (P11-1) V-W - W-B Ignition power supply Ignition switch OFF Below 1 V
      SIG (P19-5) - GND (P11-1) V-W - W-B Ignition power supply Ignition switch ON 10 to 14 V
      BDR (P19-6) - GND (P11-1) G-Y - W-B Battery (ECU power source) Always 10 to 14 V
      CTY (P9-23) - GND (P11-D R-W - W-B Passenger side door courtesy switch Passenger side door closed 10 kΩ or higher
      CTY (P9-23) - GND (P11-1) R-W - W-B Passenger side door courtesy switch Passenger side door open Below 1 Ω
      GND (P11-1) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

  5. CHECK DRIVER SIDE JUNCTION BLOCK (DRIVER SIDE JUNCTION BLOCK ECU) 
    Fig 5: Identifying 2C And 2G Junction Block Connectors Terminals
    G05292908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 2C and 2G junction block connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      JUNCTION BLOCK CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      IG (2C-8) - Body ground L - Body ground Ignition power supply Ignition switch OFF Below 1 V
      IG (2C-8) - Body ground L - Body ground Ignition power supply Ignition switch ON 10 to 14 V
      GND (2G-8) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the 2C and 2G junction block connectors.
    4. Measure the voltage of the connectors.
      JUNCTION BLOCK CONNECTORS TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      HAZ (D4-2) - GND (2G-8) Y - W-B Hazard warning switch signal Hazard warning switch OFF Below 1 V
      HAZ (D4-2) - GND (2G-8) Y - W-B Hazard warning switch signal Hazard warning switch ON Pulse generation

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

  6. CHECK LUGGAGE ROOM JUNCTION BLOCK (LUGGAGE ROOM JUNCTION BLOCK ECU) 
    Fig 6: Identifying L24 ECU Connector Terminals
    G05292909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L24 ECU connector.
    2. Measure the resistance of the wire harness side connector.
      ECU CONNECTOR TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      SG (L24-5) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the L24 ECU connector.
    4. Measure the resistance of the connector.
      ECU CONNECTOR TERMINALS REFERENCE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      LGCY (L22-14) - Body ground P - Body ground Luggage compartment door courtesy switch signal Luggage compartment door closed Below 1 V
      LGCY (L22-14) - Body ground P - Body ground Luggage compartment door courtesy switch signal Luggage compartment door open Pulse generation
      LGCY (L24-22) - Body ground P - Body ground Luggage compartment door courtesy switch signal Luggage compartment door closed Below 1 V
      LGCY (L24-22) - Body ground P - Body ground Luggage compartment door courtesy switch signal Luggage compartment door open Pulse generation

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

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