PARKING ASSIST MONITOR SYSTEM TERMINALS OF ECU


  1. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY

    A01GXXTE18

    1. Disconnect the L164 multi-media module receiver assembly connector.

    2. Measure the voltage and resistance to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L164-12 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L164-15 (IG) - L164-12 (GND1) V - W-B Power source (IG) Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      L164-16 (ACC1) - L164-12 (GND1) LG - W-B Power source (ACC) Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      L164-17 (+B1) - L164-12 (GND1) R - W-B Battery Power switch off 11 to 14 V

    3. Reconnect the L164 multi-media module receiver assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L164-1 (CANH) R CAN communication line - -
      L164-2 (CANL) G CAN communication line - -
      L164-39 (CA+) - Body ground B - Body ground Power source Power switch on (ACC) 5.5 to 7.05 V
      L164-18 (V+) - L164-19 (V-) W - R Display signal Power switch on (READY), shift lever in R, camera lens is not covered, displaying an image Pulse generation (See waveform 1)
      Power switch on (READY), shift lever in R, camera lens is covered, blacking out the screen Pulse generation (See waveform 2)
      L164-40 (CGND) - Body ground Shielded - Body ground Shielding Always Below 1 V
      L164-56 (SPD) - L164-12 (GND1) V - W-B Speed signal

      See "Vehicle Signal Check Mode" in Operation Check Click here

      		-
      L164-57 (REV) - L164-12 (GND1) R - W-B Reverse signal

      See "Vehicle Signal Check Mode" in Operation Check Click here

      		-
      L199-1 (GVIF) B Video signal (Digital) - -
    5. A01GYEIE01
      Text in Illustration
      *a Waveform 1
      *b Waveform 2
      *c Synchronization Signal
      *d Video Waveform

      Using an oscilloscope, check waveform.

      Tech Tips

      A waterproof connector is used for the television camera assembly. Therefore, inspect the waveform at the multi-media module receiver assembly with the connector connected.

      Item Content
      Terminal No. (Symbol) L164-18 (V+) - L164-19 (V-)
      Tool Setting 200 mV/DIV., 50 μsec./ DIV.
      Condition

      Waveform 1: Power switch on (READY), shift lever in R, camera lens is not covered, displaying an image

      Waveform 2: Power switch on (READY), shift lever in R, camera lens is covered, blacking out the screen

      Tech Tips

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