REAR VIEW MONITOR SYSTEM TERMINALS OF ECU


  1. TELEVISION CAMERA ASSEMBLY


    1. Disconnect the P25 television camera assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P25-6 (CB+) - Body ground W - Body ground Power source Power switch on (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 P25 television camera assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P25-3 (CV+) - P25-2 (CV-) R - B Video signal

      Power switch on (IG)

      Shift lever in R

      Camera lens not covered, displaying an image

      Pulse generation

      (Refer to waveform 1)

      Power switch on (IG)

      Shift lever in R

      Camera lens covered, blacking out the screen

      Pulse generation

      (Refer to waveform 2)
      P25-5 (CGND) - Body ground Shield - Body ground Shield ground Always Below 1 Ω

      Tech Tips

      A waterproof connector is used for the television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly with the connector connected.

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

    5. A01MG2UC01
      *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 television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly with the connector connected.


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

        Item Content
        Measurement terminal P25-3 (CV+) - P25-2 (CV-)
        Measurement setting 200 mV/DIV., 50 μs./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the power switch on (ACC).

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

        Item Content
        Measurement terminal P25-3 (CV+) - P25-2 (CV-)
        Measurement setting 200 mV/DIV., 50 μs./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the power switch on (ACC).

  2. NAVIGATION RECEIVER ASSEMBLY

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