PARKING ASSIST MONITOR SYSTEM TERMINALS OF ECU


  1. PARKING ASSIST ECU

    A01NETIE03

    1. Disconnect the F54 connector from the 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
      F54-1 (+B) - F54-3 (GND1) R - W-B Power source signal Power switch off 11 to 14 V
      F54-3 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F54-7 (IG) - F54-3 (GND1) W - W-B IG power source signal Power switch on (IG) 11 to 14 V
      F54-8 (ACC) - F54-3 (GND1) GR - 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 F54 connector to the 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
      F54-21 (CANL) - F54-3 (GND1) L - W-B CAN communication signal CAN communication circuit Pulse generation
      F54-22 (CANH) - F54-3 (GND1) Y - W-B CAN communication signal CAN communication circuit Pulse generation
      F54-24 (TX-) - F54-25 (TX+) L - P AVC-LAN communication signal - -
      F55-11 (CV-) - F54-3 (GND1) W - W-B Rear television camera ground Always Below 1 V
      F55-12 (CV+) - F54-3 (GND1) R - W-B Rear television camera display signal (NTSC) input

      Power switch on (IG)

      Shift lever in R

      Under normal conditions

      Pulse generation

      (See waveform 1)

      Power switch on (IG)

      Shift lever in R

      Camera lens is covered, blacking out screen

      Pulse generation

      (See waveform 2)
      F55-13 (CGND) - F54-3 (GND1) Shield - W-B Rear television camera ground (shield) Always Below 1 V
      F55-14 (CB+) - F54-3 (GND1) B - W-B Power source to rear television camera

      Power switch on (IG)

      Shift lever in R

      		 5.8 to 7.0 V

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

    5. A01NFQZE01
      Text in Illustration
      *1 Waveform 1 (under normal conditions)
      *2 Waveform 2 (camera lens is covered, blacking out the screen)
      *3 Synchronized Signal
      *4 Video Waveform

      Reference (Oscilloscope waveform):

      Tech Tips

      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 (under normal conditions)

        Item Content
        Terminal No. (Symbol) F55-12 (CV+) - F54-3 (GND1)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

        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) F55-12 (CV+) - F54-3 (GND1)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

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

  2. REAR TELEVISION CAMERA ASSEMBLY


    1. Disconnect the Y14 connector from the rear television camera assembly.

      A01NDACE06

    2. Measure the voltage of each terminal of the wire harness side connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      Y14-4 (CB+) - Body ground B - Body ground Power source

      Power switch on (IG)

      Shift lever in R

      		 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 Y14 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
      Y14-2 (CV+) - Y14-1 (CV-) R - W Display signal

      Power switch on (IG)

      Shift lever in R

      Under normal conditions

      Pulse generation

      (See waveform 1)

      Power switch on (IG)

      Shift lever in R

      Camera lens covered, blacking out screen

      Pulse generation

      (See waveform 2)

      Tech Tips

      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. A01NFQZE01
      Text in Illustration
      *1 Waveform 1 (under normal conditions)
      *2 Waveform 2 (camera lens is covered, blacking out the screen)
      *3 Synchronized Signal
      *4 Video Waveform

      Reference (Oscilloscope waveform):

      Tech Tips

      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 (under normal conditions)

        Item Content
        Terminal No. (Symbol) Y14-2 (CV+) - Y14-1 (CV-)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

        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) Y14-2 (CV+) - Y14-1 (CV-)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

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

  3. MULTI-DISPLAY ASSEMBLY Click here