PARKING ASSIST MONITOR SYSTEM(w/ Parallel Parking Assist Function) TERMINALS OF ECU


  1. REAR TELEVISION CAMERA ASSEMBLY


    1. Disconnect the T1 rear television camera assembly connector.

      A0022HHN01

    2. Measure the voltage on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T1-6 (CB+) - Body ground B - Body ground Power source Power switch on (ACC) 5.5 to 7.05 V

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

    3. Measure the resistance on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T1-1 (CURT) - 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.

    4. Reconnect the T1 rear television camera assembly connector.

    5. Measure the voltage and check for pulses at each terminal of the connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T1-3 (CV+) - T1-2 (CV-) R - W Video signal

      Power switch on (IG)

      Shift lever in R

      Camera lens not covered, displaying image

      Pulse generation

      (Refer to waveform 1)

      Power switch on (IG)

      Shift lever in R

      Camera lens covered, blacking out screen

      Pulse generation

      (Refer to waveform 2)
      T1-5 (CGND) - Body ground L - Body ground Shield ground Always Below 1 V

      Tech Tips

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio receiver assembly with the connector connected.

      If the result is not as specified, the rear television camera assembly may be malfunctioning.

    6. A0020LAC04
      *a Waveform 1 (camera lens is not covered, displaying an image)
      *b Waveform 2 (camera lens is covered, blacking out the screen)
      *c Synchronization Signal
      *d Video Waveform

      Reference (Oscilloscope waveform):

      Tech Tips

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio receiver assembly with the connector connected.


      1. Waveform 1 (camera lens is not covered, displaying an image)

        Item Content
        Measurement terminal T1-3 (CV+) - T1-2 (CV-)
        Measurement setting 200 mV/DIV., 50 μs./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the power switch is on (ACC).

      2. Waveform 2 (camera lens is covered, blacking out the screen)

        Item Content
        Measurement terminal T1-3 (CV+) - T1-2 (CV-)
        Measurement setting 200 mV/DIV., 50 μs./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the power switch is on (ACC).

  2. RADIO RECEIVER ASSEMBLY

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    w/o Navigation System: Click here