PARKING ASSIST MONITOR SYSTEM TERMINALS OF ECU


  1. REAR TELEVISION CAMERA ASSEMBLY


    1. Disconnect the U18 connector from the rear television camera assembly.

      A01CGDCE05

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U18-3 (CGND) - Body ground Shield - Body ground Ground Always Below 1 V
      U18-4 (CB+) - U18-3 (CGND) B - Shield Power source

      Engine switch on (IG)

      Shift lever in R

      		 5.5 to 7.05 V

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

    3. Reconnect the U18 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
      U18-2 (CV+) - U18-1 (CV-) R - W Video signal

      Engine switch on (IG)

      Shift lever in R

      Camera lens not covered, displaying an image

      Pulse generation

      (See waveform 1)

      Engine switch on (IG)

      Shift lever in R

      Camera lens covered, blacking out screen

      Pulse generation

      (See waveform 2)

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

    5. A01CDG0E22
      Text in Illustration
      *a Waveform 1 (camera lens not covered, displaying an image)
      *b Waveform 2 (camera lens covered, blacking out the screen)
      *c Synchronization Signal
      *d 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 (camera lens is not covered, displaying an image)

        Item Content
        Terminal No. (Symbol) U18-2 (CV+) - U18-1 (CV-)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Engine 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) U18-2 (CV+) - U18-1 (CV-)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Engine switch on (IG), shift lever in R

        Tech Tips

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

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