PARKING ASSIST MONITOR SYSTEM TERMINALS OF ECU


  1. REAR TELEVISION CAMERA ASSEMBLY


    1. Disconnect the T20 rear television camera assembly connector.

      B000K2IE12

    2. Measure the voltage on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T20-6 (CB+) - Body ground L - Body ground Power source Ignition switch ACC 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 T20 rear television camera assembly connector.

    4. Measure the voltage and check for pulses at each terminal of the connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T20-3 (CV+) - T20-2 (CV-) W - R Video signal

      Ignition switch ON

      Shift lever in R

      Camera lens not covered, displaying image

      Pulse generation

      (See waveform 1)

      Ignition switch ON

      Shift lever in R

      Camera lens covered, blacking out screen

      Pulse generation

      (See waveform 2)
      T20-5 (CGND) - Body ground LG - Body ground Shield ground Always Below 1 V

      Tech Tips

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly with the connector connected.

      If the result is not as specified, the rear television camera assembly may be malfunctioning.

    5. B000ITOE22
      Text in Illustration
      *a Waveform 1 (camera lens is not covered, displaying an image)
      *b Waveform 2 (camera lens is 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 radio and display receiver assembly with the connector connected.


      1. Waveform 1 (camera lens is not covered, displaying an image)

        Item Content
        Measurement terminal T20-3 (CV+) - T20-2 (CV-)
        Measurement setting 200 mV/DIV., 50 μs./DIV.
        Condition Ignition switch ON, shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the ignition switch is turned to ACC.

      2. Waveform 2 (camera lens is covered, blacking out the screen)

        Item Content
        Measurement terminal T20-3 (CV+) - T20-2 (CV-)
        Measurement setting 200 mV/DIV., 50 μs./DIV.
        Condition Ignition switch ON, shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the ignition switch is turned to ACC.

  2. RADIO AND DISPLAY RECEIVER ASSEMBLY Click here