REAR VIEW MONITOR SYSTEM TERMINALS OF ECU


  1. RADIO RECEIVER ASSEMBLY

    B0057O5N02

    1. Disconnect the I120 and I121 radio 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 Specified Condition
      I120-3 (ACC1) - I120-7 (GND1) GR - W-B Power source (ACC) Engine switch off Below 1 V
      Engine switch on (ACC) 11 to 14 V
      I120-4 (+B1) - I120-7 (GND1) P - W-B Power source (+B) Engine switch off 11 to 14 V
      I120-7 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I121-1 (IG) - I120-7 (GND1) P - W-B Power source (IG) Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V

    3. Reconnect the I120 and I121 radio receiver assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I122-11 (CA+) - I122-23 (CGND) B - Shielded Rear television camera assembly power source Engine switch on (ACC) 5.5 to 7.05 V
      I122-12 (V+) - I122-23 (CGND) W - Shielded 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)
      I122-23 (CGND) - Body ground Shielded - Body ground Shielded ground Always Below 1 Ω
      I122-24 (V-) - I122-23 (CGND) R - Shielded Ground Always Below 1 Ω
    5. B0058VBC03
      *a Waveform 1
      *b Waveform 2
      *c Synchronization Signal
      *d Video Waveform

      Reference (Oscilloscope waveform):


      1. Waveform 1

        Item Content
        Terminal No. (Symbol) I122-12 (V+) - I122-23 (CGND)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Engine switch on (IG), shift lever in R, 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

        Item Content
        Terminal No. (Symbol) I122-12 (V+) - I122-23 (CGND)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Engine switch on (IG), shift lever in R, camera lens covered, blacking out screen

        Tech Tips

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