PARKING ASSIST MONITOR SYSTEM TERMINALS OF ECU


  1. RADIO RECEIVER ASSEMBLY

    B002KF1N01

    1. Disconnect the I38 radio 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
      I38-17 (+B1) - I38-12 (GND1) P - W-B Power source Power switch off 11 to 14 V
      I38-16 (ACC1) - I38-12 (GND1) GR - W-B Power source (ACC) Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      I38-15 (IG) - I38-12 (GND1) P - W-B Power source (IG) Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      I38-12 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the I38 radio receiver assembly connector.

    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
      I38-39 (CA+) - I38-40 (CGND) B - Shielded Rear television camera assembly power source Power switch on (IG) 5.5 to 7.05 V
      I38-18 (V+) - I38-40 (CGND) W - Shielded Video signal Power switch on (IG), shift lever in R, camera lens is not covered, displaying an image Pulse generation (See waveform 1)
      Power switch on (IG), shift lever in R, camera lens is covered, blacking out screen Pulse generation (See waveform 2)
      I38-40 (CGND) - Body ground Shielded - Body ground Shielded ground Always Below 1 Ω
      I38-19 (V-) - Body ground R - Shielded Ground Always Below 1 Ω
    5. B002HRFC03
      *a Waveform 1
      *b Waveform 2
      *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

        Item Content
        Terminal No. (Symbol) I38-18 (V+) - I38-40 (CGND)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R, camera lens is not covered, displaying an image

        Tech Tips

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

      2. Waveform 2

        Item Content
        Terminal No. (Symbol) I38-18 (V+) - I38-40 (CGND)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R, camera lens is covered, blacking out screen

        Tech Tips

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