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Terminals Of Ecu [08/2015 - 08/2019]

  1. PARKING ASSIST ECU 
    Fig 1: Parking Assist ECU Connector End View
    GTY670167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the I1 and I2 parking assist ECU connectors.
    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
      I1-1 (+B) - I1-4 (GND1) L - W-B Power source signal Always 10 to 16 V
      I1-4 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I1-8 (IG) - I1-4 (GND1) L - W-B IG Power source signal Engine switch on (IG) 10 to 16 V
      Engine switch off Below 1 V
      I1-9 (ACC) - I1-4 (GND1) P - W-B ACC Power source signal Engine switch on (ACC) 10 to 16 V
      Engine switch off Below 1 V
      I2-7 (BLSW) - I1-4 (GND1) L - W-B Front and side monitor main switch power source signal Engine switch on (IG), wide view front and side monitor switch on 10 to 16 V
    3. Reconnect the I1 and I2 parking assist ECU connectors.
    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
      I1-10 (TX-) LG AVC-LAN communication signal - -
      I1-11(TX+) L AVC-LAN communication signal - -
      I2-36 (BCV-) - I2-35 (BGND) W - GR Front television camera ground Always Below 1 V
      I2-12 (BCV+) - I2-35 (BGND) R - GR Front television camera display signal input Engine switch on (IG), wide view front and side monitor switch on Pulse generation
      (See waveform)
      I2-35 (BGND) - I1-4 (GND1) GR - W-B Front television camera ground (shield) Always Below 1 Ω
      I2-11 (BCB+) - I2-35 (BGND) B - GR Power source to front television camera Engine switch on (IG), wide view front and side monitor switch on 5.5 to 7.05 V
    5. Using an oscilloscope, check waveform.
      Fig 2: Identifying Waveform 1 And Waveform 2
      GTY612877Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Waveform 1 (under normal conditions)
      *b Waveform 2 (camera lens is covered, blacking out the screen)
      *c Synchronized Signal
      *d Video Waveform

      HINT: 

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

      1. Waveform 1
        MEASUREMENT CONDITION

        Item Content
        Terminal No. (Symbol) I2-12 (BCV+) - I2-35 (BGND)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Waveform A: Engine switch on (IG), wide view front and side monitor switch on and camera lens is not covered, displaying an image
      2. Waveform 2
        MEASUREMENT CONDITION

        Item Content
        Terminal No. (Symbol) I2-12 (BCV+) - I2-35 (BGND)
        Tool Setting 200 mV/DIV., 50 μsec./DIV.
        Condition Waveform B: Engine switch on (IG), wide view front and side monitor switch on and camera lens is covered, blacking out the screen.
  2. MULTI-MEDIA MODULE RECEIVER ASSEMBLY (w/ Navigation System)  
  3. MULTI-MEDIA MODULE RECEIVER ASSEMBLY (w/o Navigation System)  
  4. MULTI-DISPLAY ASSEMBLY (w/ Navigation System)  
  5. MULTI-DISPLAY ASSEMBLY (w/o Navigation System)  
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