REAR VIEW MONITOR SYSTEM TERMINALS OF ECU

  1. MULTI-MEDIA MODULE RECEIVER ASSEMBLY

    E283796N01

    1. Disconnect the H56 and H57 multi-media module 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

      H56-3 (ACC) - H56-7 (GND1)

      GR - BR

      Power source (ACC)

      Engine switch off

      Below 1 V

      Engine switch on (ACC)

      11 to 14 V

      H56-4 (+B1) - H56-7 (GND1)

      SB - BR

      Power source (+B)

      Always

      11 to 14 V

      H56-7 (GND1) - Body ground

      BR - Body ground

      Ground

      Always

      Below 1 Ω

      H57-1 (IG) - H56-7 (GND1)

      L - BR

      Power source (IG)

      Engine switch off

      Below 1 V

      Engine switch on (IG)

      11 to 14 V

    3. Reconnect the H56 and H57 multi-media module 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

      H58-11 (CA+) - H58-23 (CGND)

      B - Shielded

      Rear television camera assembly power source

      Engine switch on (ACC)

      5.5 to 7.05 V

      H58-12 (V+) - H58-23 (CGND)

      R - Shielded

      Video signal

      Engine switch on (IG), camera lens not covered, displaying an image

      Pulse generation

      (See waveform 1)

      Engine switch on (IG), camera lens covered, blacking out screen

      Pulse generation

      (See waveform 2)

      H58-23 (CGND) - Body ground

      Shielded - Body ground

      Shielded ground

      Always

      Below 1 Ω

      H58-24 (V-) - H58-23 (CGND)

      W - Shielded

      Ground

      Always

      Below 1 Ω
    5. E265840C03

      *a

      Waveform 1

      *b

      Waveform 2

      *c

      Synchronization Signal

      *d

      Video Waveform

      Reference (Oscilloscope waveform):

      1. Waveform 1

        Item

        Content

        Terminal No. (Symbol)

        H58-12 (V+) - H58-23 (CGND)

        Tool Setting

        200 mV/DIV., 50 μsec./DIV.

        Condition

        Engine switch on (IG), camera lens not covered, displaying an image
        Tip:

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

      2. Waveform 2

        Item

        Content

        Terminal No. (Symbol)

        H58-12 (V+) - H58-23 (CGND)

        Tool Setting

        200 mV/DIV., 50 μsec./DIV.

        Condition

        Engine switch on (IG), camera lens covered, blacking out screen
        Tip:

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