REAR VIEW MONITOR SYSTEM(for Inner Rear View Mirror Type) TERMINALS OF ECU


  1. CHECK INNER REAR VIEW MIRROR ASSEMBLY

    A004TPNE02

    1. Disconnect the K12 inner rear view mirror 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
      K12-1 (IG) - K12-2 (E) L - W-B Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      K12-2 (E) - Body ground W-B - 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 K12 inner rear view mirror assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K12-3 (REV) - K12-2 (E) R - W-B Reverse signal Ignition switch ON, shift lever in R 11 to 14 V
      Ignition switch ON, shift lever not in R Below 1 V
      K12-6 (CV-) - Body ground W - Body ground Shielded Always Below 1 V
      K12-7 (CV+) - K12-6 (CV-) 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)
      K12-13 (CGND) - K12-2 (E) Shielded - W-B Rear television camera ground (shield) Always Below 1 V
      K12-14 (CB+) - K12-13 (CGND) B - Shielded Power source Ignition switch ON, shift lever in R 5.5 to 7.05 V

      If the result is not as specified, the inner rear view mirror assembly may have a malfunction.

    5. A004R5QE05

      Using an oscilloscope, check waveform 1.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) K12-7 (CV+) - K12-6 (CV-)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition Ignition switch ON, shift lever in R
    6. A004P03E06

      Using an oscilloscope, check waveform 2.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) K12-7 (CV+) - K12-6 (CV-)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition Ignition switch ON, shift lever in R, screen blacked out by covering camera lens