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Terminals Of Ecu

  1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) 
    Fig 1: Identifying Main Body ECU Connectors Terminal
    G04943821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA, DD, DF, L12 and L13 ECU connectors.
    2. Measure the resistance and voltage according to value(s) in the table below.
      MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) (DISCONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      DA-4O (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DA-41 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DF-1 (ACC) - DA-40 (GND2) B-W-B ACC power supply Engine switch off Below 1 Ω
      Engine switch on (ACC) 11 to 14 V
      DF-1 (IG) - DA-40 (GND2) B-W-B IG power supply Engine switch off Below 1 Ω
      Engine switch on (IG) 11 to 14 V
      L13-24 (DCTY) - Body ground W - Body ground Driver side door courtesy light switch input Driver side door open Below 1 Ω
      Driver side door closed 10 kΩ or higher
      L12-21 (PCTY) - Body ground L - Body ground Passenger side door courtesy light switch input Passenger side door open Below 1 Ω
      Passenger side door closed 10 kΩ or higher
      L12-7(RCTY)-Body ground R - Body ground Rear RH side door courtesy light switch input Rear RH side door open Below 1 Ω
      Rear RH side door closed 10 kΩ or higher
      DD-12(LCTY)-Body ground L - Body ground Rear LH side door courtesy light switch input Rear LH side door open Below 1 Ω
      Rear LH side door closed 10 kΩ or higher

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

    3. Reconnect the DA, DD, DF, L12 and L3 ECU connectors.
    4. Measure the voltage according to the value(s) in the table below.
      MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) (RECONNECT)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L11-14(HAZ)-Body ground O - Body ground Turn signal light drive Hazard warning signal switch ON Pulse generation
      Hazard warning signal switch OFF Below 1 Ω

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

  2. CHECK FRONT MULTIPLEX NETWORK LIGHT ECU (FRONT CONTROLLER) 
    Fig 2: Identifying Front Multiplex Network Light ECU Connector
    G04951556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage according to the value(s) in the table below.
      FRONT MULTIPLEX NETWORK LIGHT ECU (FRONT CONTROLLER)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A52-14 (BZR) - Body ground B - Body ground Wireless door lock buzzer output Wireless door lock buzzer ON 10 to 14 V
      Wireless door lock buzzer OFF Below 1 V

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

  3. CHECK LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU) 
    Fig 3: Identifying Luggage Room Junction Block Connector Terminal
    G04950358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.
      LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU)

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      S63-9 (LCTY) - Body ground G - Body ground Luggage compartment door courtesy light switch input Luggage compartment door open Below 1 Ω
      Luggage compartment door closed 10 kΩ or higher

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

  4. CHECK CERTIFICATION ECU 
    Fig 4: Identifying L15 And L16 ECU Connector Terminal
    G04944572Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L15 ECU connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      CERTIFICATION ECU RESISTANCE AND VOLTAGE

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L15-1 (+B1)-L15-17(E) L-W-B Battery power supply Always 11 to 14 V
      L15-18(IG)-L15-17(E) L-W-B IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V

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

    3. Reconnect the L15 ECU connector.
    4. Measure the voltage according to the value(s) in the table below.
      CERTIFICATION ECU VOLTAGE

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-39(RSSI)-L15-17 (E) W-W-B Door control receiver output signal Engine switch off, all doors closed and transmitter switch not pressed 11 to 14 V
      Engine switch off, all doors closed and transmitter switch pressed Below 1 V
      L15-38(RDA)-L15-17(E) R-W-B Door control receiver output signal Engine switch off, all doors closed and transmitter switch not pressed 4.6 to 5.4 V
      Engine switch off, all doors closed and transmitter switch pressed Pulse generation
      L15-37(ASEL)-L15-17 (E) L-W-B Change of door control receiver (door to luggage compartment) All doors closed and transmitter LUGGAGE switch not pressed Below 1 V
      All doors closed and transmitter LUGGAGE switch pressed 4.6 to 5.4 V
      L15-29 (RCO)-L15-17(E) G-W-B Supply battery to door control receiver Engine switch off, all doors closed and transmitter switch pressed 4.6 to 5.4 V

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

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