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Terminals Of Ecu [09/2015 - 08/2019]

  1. CHECK DRIVING SUPPORT ECU ASSEMBLY 
    GTY621500Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance according to the value (s) in the table below.

      HINT: 

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A72-7 (B) - A72-28 (GND) GR - W-B Power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      A72-3 (BZ) - A72-28 (GND) R - W-B Skid control buzzer assembly output Engine switch on (IG), buzzer not sounding 11 to 14 V
      Engine switch on (IG), buzzer sounding Below 1 V
      A72-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    2. Check for pulses according to the value (s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A72-8 (CA1P) - A72-28 (GND) Y - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 1)
      A72-9 (CA1N) - A72-28 (GND) W - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 2)
      A72-10 (CA2H) - A72-28 (GND) B - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 1)
      A72-11 (CA2L) - A72-28 (GND) G - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 2)
    3. WAVEFORM 1
      1. CAN communication signal
        Item Content
        Terminal Name Between A72-8 (CA1P) - A72-28 (GND)
        Between A72-10 (CA2H) - A72-28 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

        GTY527215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. WAVEFORM 2
      1. CAN communication signal
        Item Content
        Terminal Name Between A72-9 (CA1N) - A72-28 (GND)
        Between A72-11 (CA2L) - A72-28 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

        GTY531906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK MILLIMETER WAVE RADAR SENSOR 
    GTY627604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance according to the value (s) in the table below.

      HINT: 

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A70-8 (IGB) - A70-1 (SGND) G - W-B Power source Engine switch on (IG) 11 to 14 V
      A70-1 (SGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    2. Check for pulses according to the value (s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A70-3 (CA2H) - A70-1 (SGND) BR - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 1)
      A70-2 (CA2L) - A70-1 (SGND) V - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 2)
      A70-5 (CA1P) - A70-1 (SGND) L - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 1)
      A70-6 (CA1N) - A70-1 (SGND) GR - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 2)
    3. WAVEFORM 1
      1. CAN communication signal
        Item Content
        Terminal Name Between A70-3 (CA2H) and A70-1 (SGND)
        Between A70-5 (CA1P) and A70-1 (SGND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

        GTY527215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. WAVEFORM 2
      1. CAN communication signal
        Item Content
        Terminal Name Between A70-2 (CA2L) and A70-1 (SGND)
        Between A70-6 (CA1N) and A70-1 (SGND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

        GTY531906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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