REAR VIEW MONITOR SYSTEM TERMINALS OF ECU


  1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

    A01J6IZE09

    1. Disconnect the R25 radio and display receiver assembly connector.

    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
      R25-3 (ACC) - R25-7 (GND) GR - BR Accessory (On) Ignition switch off Below 1 V
      Ignition switch ACC 11 to 14 V
      R25-4 (B) - R25-7 (GND) L-Y - BR Battery Always 11 to 14 V
      R25-7 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the R25 radio and display receiver assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R19-2 (REV) - R25-7 (GND) R-Y - 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
      R20-7 (CA+) - R20-15 (CGND) B - Shielded Power source Ignition switch ON, shift lever in R 5.5 to 7.05 V
      R20-8 (V+) - R20-16 (V-) W - R 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)
      R20-15 (CGND) - Body ground Shielded - Body ground Shielding Always Below 1 V

      If the result is not as specified, the radio and display receiver assembly may have a malfunction.

    5. A01J4PAE01

      Using an oscilloscope, check waveform 1.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) R20-8 (V+) - R20-16 (V-)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition Ignition switch ON, shift lever in R
    6. A01J6T8E01

      Using an oscilloscope, check waveform 2.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) R20-8 (V+) - R20-16 (V-)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition Ignition switch ON, shift lever in R, screen blacked out by covering camera lens