REAR VIEW MONITOR SYSTEM(for Radio and Display Type) TERMINALS OF ECU


  1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

    A01SKAAN02

    1. Disconnect the G37 and G40 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 Specified Condition
      G37-1 (IG) - Body ground G - Body ground Power source of IG Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      G40-3 (ACC1) - Body ground GR - Body ground Power source of ACC Ignition switch off Below 1 V
      Ignition switch ACC

      11 to 14 V*1

      10.5 to 16 V*2
      G40-4 (+B1) - Body ground SB - Body ground Battery Always

      11 to 14 V*1

      10.5 to 16 V*2
      G40-7 (GND1) - Body ground BR - Body ground Ground Always Below 1 Ω

      *1: w/o Stop and Start System

      *2: w/ Stop and Start System

    3. Reconnect the G37 and G40 radio and display receiver assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G37-2 (REV) - Body ground R - Body ground 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
      G38-12 (V+) - G38-24 (V-) R - W Display signal Ignition switch ON, shift lever in R Pulse generation (See waveform 1)
      Ignition switch ON, shift lever in R, screen blacked out by covering camera lens Pulse generation (See waveform 2)
      G38-11 (CA+) - G38-23 (CGND) B - Shielded Power source Ignition switch ACC 5.5 to 7.05 V
      G38-23 (CGND) - Body ground Shielded - Body ground Shielding Always Below 1 V
    5. A01SJ7AN05

      Using an oscilloscope, check waveform 1.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) G38-12 (V+) - G38-24 (V-)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Ignition switch ON, shift lever in R
    6. A01SGTRN04

      Using an oscilloscope, check waveform 2.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) G38-12 (V+) - G38-24 (V-)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Ignition switch ON, shift lever in R, screen blacked out by covering camera lens