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Terminals Of Ecu

  1. PARKING ASSIST ECU 
    Fig 1: Identifying Parking Assist ECU Connector Terminal Identification
    GTY283332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F106 connector from the parking assist ECU.
    2. Measure the voltage and resistance of each terminal of the wire harness side connector.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F106-1 (+B) - F106-3 (GND1) V - W-B Power source signal Power switch off 11 to 14 V
      F106-3 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F106-7 (IG) - F106-3 (GND1) V - W-B IG power source signal power switch on (IG) 11 to 14 V
      F106-8 (ACC) - F106-3 (GND1) SB - W-B ACC power source signal power switch on (ACC) 11 to 14 V

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

    3. Reconnect the F106 connector to the parking assist ECU.
    4. Measure the voltage and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F106-21 (CANL) - F106-3 (GND1) W - W-B CAN communication signal CAN communication circuit Pulse generation
      F106-22 (CANH) - F106-3 (GND1) R - W-B CAN communication signal CAN communication circuit Pulse generation
      F106-24 (TX-) - F106-25 (TX+) Y - L AVC-LAN communication signal - -
      F105-11 (CV-) - F106-3 (GND1) B - W-B Rear television camera ground Always Below 1 V
      F105-12 (CV+) - F106-3 (GND1) R - W-B Rear television camera display signal (NTSC) input Power switch on (READY)
      Reverse (R) selected
      Camera lens not covered, displaying an image      		 Pulse generation
      (See waveform 1)
      Power switch on (READY)
      Reverse (R) selected
      Camera lens covered, blacking out screen      		 Pulse generation
      (See waveform 2)
      F105-13 (CGND) - F106-3 (GND1) Shield - W-B Rear television camera ground (shield) Always Below 1 V
      F105-14 (CB+) - F106-3 (GND1) W - W-B Power source to rear television camera Power switch on (READY)
      Reverse (R) selected      		 5.8 to 7.0 V

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

    5. Reference (Oscilloscope waveform):
      Fig 2: Identifying Waveform 2
      GTY247467Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.

      1. Waveform 1 (camera lens not covered, displaying an image)
        Item Content
        Terminal No. (Symbol) F105-12 (CV+) - F106-3 (GND1)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (READY), reverse (R) selected

        HINT: 

        The video waveform changes according to the image sent by the rear television camera assembly.

      2. Waveform 2 (camera lens covered, blacking out the screen)
        Item Content
        Terminal No. (Symbol) F105-12 (CV+) - F106-3 (GND1)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (READY), reverse (R) selected

        HINT: 

        The video waveform changes according to the image sent by the rear television camera assembly.

        TEXT IN ILLUSTRATION

        *1 Waveform 1 (camera lens not covered, displaying an image)
        *2 Waveform 2 (camera lens covered, blacking out the screen)
        *3 Synchronization Signal
        *4 Video Waveform
  2. REAR TELEVISION CAMERA ASSEMBLY 
    1. Disconnect the L32 connector from the rear television camera assembly.
      Fig 3: Identifying Rear Television Camera Assembly Connector Terminal Identification
      GTY280627Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage of each terminal of the wire harness side connector.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L32-4 (CB+) - Body ground W - Body ground Power source Power switch on (READY)
      Reverse (R) selected      		 5.8 to 7.0 V

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

    3. Reconnect the L32 connector to the rear television camera assembly.
    4. Check for pulses between each terminal of the connector.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L32-2 (CV+) - L32-1 (CV-) R - B Display signal Power switch on (READY)
      Reverse (R) selected
      Camera lens not covered, displaying an image      		 Pulse generation
      (See waveform 1)
      Power switch on (READY)
      Reverse (R) selected
      Camera lens covered, blacking out screen      		 Pulse generation
      (See waveform 2)

      HINT: 

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.

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

    5. Reference (Oscilloscope waveform):
      Fig 4: Identifying Waveform 2
      GTY247467Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.

      1. Waveform 1 (camera lens not covered, displaying an image)
        Item Content
        Terminal No. (Symbol) L32-2 (CV+) - L32-1 (CV-)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (READY), reverse (R) selected

        HINT: 

        The video waveform changes according to the image sent by the rear television camera assembly.

      2. Waveform 2 (camera lens is covered, blacking out the screen)
        Item Content
        Terminal No. (Symbol) L32-2 (CV+) - L32-1 (CV-)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (READY), reverse (R) selected

        HINT: 

        The video waveform changes according to the image sent by the rear television camera assembly.

        TEXT IN ILLUSTRATION

        *1 Waveform 1 (camera lens not covered, displaying an image)
        *2 Waveform 2 (camera lens covered, blacking out the screen)
        *3 Synchronization Signal
        *4 Video Waveform
  3. CENTER INSTRUMENT CLUSTER FINISH PANEL ASSEMBLY (MULTI-DISPLAY) 

    Refer to TERMINALS OF ECU

  4. MULTI-DISPLAY 

    Refer to TERMINALS OF ECU

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