REAR VIEW MONITOR SYSTEM TERMINALS OF ECU


  1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

    A002MJDE02

    1. Disconnect the H105 and H107 radio and display receiver assembly connectors.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
      H105-1 (IG) - H107-7 (GND1) L - BR Power source (IG) Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      H107-3 (ACC1) - H107-7 (GND1) GR - BR Power source (ACC) Ignition switch off Below 1 V
      Ignition switch ACC 11 to 14 V
      H107-4 (+B1) - H107-7 (GND1) SB - BR Power source (+B) Always 11 to 14 V
      H107-7 (GND1) - Body ground BR - Body ground Ground Always Below 1 Ω
    3. Reconnect the H105 and H107 radio and display receiver assembly connectors.

    4. Measure the voltage and waveform according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
      H105-2 (REV) - H107-7 (GND1) R - BR Reverse signal Ignition switch ON, shift lever in R 7.5 to 14 V
      Ignition switch ON, shift lever not in R Below 1 V
      H123-11 (CA+) - H123-23 (CGND) B - Shielded Power source Ignition switch ON 5.5 to 7.05 V
      H123-12 (V+) - H123-23 (CGND) R - Shielded Display signal Ignition switch ON, camera lens not covered, displaying an image Pulse generation (See waveform 1)
      Ignition switch ON, camera lens covered, blacking out screen Pulse generation (See waveform 2)
      H123-23 (CGND) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    5. Using an oscilloscope, check the waveform.

      A002LPTE01

      1. Waveform 1

        Measurement Condition
        Item Content
        Terminal No. (Symbol) H123-12 (V+) - H123-23 (CGND)
        Tool Setting 200 mV/DIV., 50 μs/DIV.
        Condition Ignition switch ON, camera lens not covered, displaying an image

        Tech Tips

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

      2. Waveform 2

        Measurement Condition
        Item Content
        Terminal No. (Symbol) H123-12 (V+) - H123-23 (CGND)
        Tool Setting 200 mV/DIV., 50 μs/DIV.
        Condition Ignition switch ON, camera lens covered, blacking out screen

        Tech Tips

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

        Text in Illustration
        *a Waveform 1
        *b Waveform 2
        *c Synchronized Signal
        *d Video Waveform