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Terminals Of Ecu [08/2013 - ]

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK LANE DEPARTURE WARNING CAMERA 
    Fig 1: Identifying Lane Departure Warning Camera Connector Terminal Identification
    GTY396555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    T12-6 (CA1P) - T12-11 (GND) B - W-B CAN communication signal Power switch on (IG) Pulse generation
    (Waveform 1)
    T12-7 (IGB) - T12-11 (GND) V - W-B Power source Power switch on (IG) 11 to 14 V
    T12-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    T12-12 (CA1N) - T12-11 (GND) W - W-B CAN communication signal Power switch on (IG) Pulse generation
    (Waveform 1)

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

    HINT: 

    Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.

    1. Waveform 1 (CAN communication signal)
      Item Content
      Terminal Name CH1: T12-6 (CA1P) - T12-11 (GND)
      CH2: T12-12 (CA1N) - T12-11 (GND)
      Tester Range 1 V/DIV., 50 μs./DIV.
      Condition Power switch on (IG)

      HINT: 

      The waveform will vary depending on the content of the digital communication (digital signal).

      Fig 2: Waveform 1 (CAN Communication Signal)
      GTY229628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK DRIVING SUPPORT ECU ASSEMBLY 
    Fig 3: Identifying Driving Support ECU Assembly Connector Terminal Identification
    GTY401446Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • As disconnecting the connector to perform inspections may cause DTCs to be stored, clear DTCs after performing inspections.
    • As the connector may be damaged if a load of more than 10 kg (22 lb) is applied to it, do not apply any more load than necessary to the connector.
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    H75-6 (SPSW) - H75-25 (GND) R - W-B Lane departure alert main switch signal Power switch on (IG), steering pad switch off 1 MΩ or higher
    Power switch on (IG), steering pad switch on (Lane departure alert main switch on) 228 to 252 Ω
    H75-17 (CA2L) - H75-25 (GND) LG - W-B CAN communication signal Power switch on (IG) Pulse generation
    (Waveform 1)
    H75-18 (CA1N) - H75-25 (GND) W - W-B CAN communication signal Power switch on (IG) Pulse generation
    (Waveform 2)
    H75-25 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    H75-30 (B) - H75-25 (GND) V - W-B Power source Power switch on (IG) 11 to 14 V
    H75-39 (CA2H) - H75-25 (GND) R - W-B CAN communication signal Power switch on (IG) Pulse generation
    (Waveform 1)
    H75-40 (CA1P) - H75-25 (GND) B - W-B CAN communication signal Power switch on (IG) Pulse generation
    (Waveform 2)

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

    HINT: 

    Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.

    1. Waveform 1 (CAN communication signal)
      Item Content
      Terminal Name CH1: H75-39 (CA2H) - H75-25 (GND)
      CH2: H75-17 (CA2L) - H75-25 (GND)
      Tester Range 1 V/DIV., 50 μs./DIV.
      Condition Power switch on (IG)

      HINT: 

      The waveform will vary depending on the content of the digital communication (digital signal).

      Fig 4: Waveform 1 (CAN Communication Signal)
      GTY229628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Waveform 2 (CAN communication signal)
      Item Content
      Terminal Name CH1: H75-40 (CA1P) - H75-25 (GND)
      CH2: H75-18 (CA1N) - H75-25 (GND)
      Tester Range 1 V/DIV., 50 μs./DIV.
      Condition Power switch on (IG)

      HINT: 

      The waveform will vary depending on the content of the digital communication (digital signal).

      Fig 5: Waveform 2 (CAN Communication Signal)
      GTY229628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) 
    Fig 6: Identifying Skid Control ECU Connector Terminal Identification (Brake Booster With Master Cylinder Assembly)
    GTY404686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *a Component without harness connected
    (Skid Control ECU (Brake Booster with Master Cylinder Assembly))    		 - -
    Terminal No. (Symbol) Terminal Description
    A24-13 (BZ) Skid control buzzer assembly signal output
    1. TERMINAL INSPECTION
      1. Disconnect the connector and measure the voltage on the wire harness side.
        Fig 7: Skid Control ECU Connector Terminal Identification (Brake Booster With Master Cylinder Assembly)
        GTY410511Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Front view of wire harness connector
        (to Skid Control ECU (Brake Booster with Master Cylinder Assembly))        		 - -

        HINT: 

        The voltage cannot be measured with the connector connected to the skid control ECU (brake booster with master cylinder assembly) as the connector is watertight.

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        A24-13 (BZ) - Body ground B - Body ground Skid control buzzer assembly output Power switch on (IG), buzzer not sounding 11 to 14 V
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