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Terminals Of Ecu [09/2014 - 10/2015]

  1. CHECK SEAT BELT CONTROL ECU 
    Fig 1: Seat Belt Control ECU Connector Terminal Identification
    GTY533494Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the U34 and U35 seat belt control ECU connectors.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U34-7 (+B) - Body ground R - Body ground Battery Always 11 to 14 V
      U34-8 (PGND) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      U35-8 (IG1) - Body ground G - Body ground Seat belt control ECU power supply Power switch on (IG) 11 to 14 V
      U35-8 (IG1) - Body ground G - Body ground Seat belt control ECU power supply Power switch off Below 1 V

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

    3. Reconnect the U34 and U35 seat belt control ECU connectors.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U34-2 (MOR+) - U34-1 (MOR-) B - LG Seat belt motor RH power supply Power switch on (IG) 4.0 to 8.5 V
      U34-2 (MOR+) - U34-1 (MOR-) B - LG Seat belt motor RH power supply Power switch off Below 1 V
      U34-3 (MOL+) - U34-4 (MOL-) L - W Seat belt motor LH power supply Power switch on (IG) 4.0 to 8.5 V
      U34-3 (MOL+) - U34-4 (MOL-) L - W Seat belt motor LH power supply Power switch off Below 1 V
  2. CHECK DRIVING SUPPORT ECU ASSEMBLY 
    Fig 2: Driving Support ECU Assembly Connector Terminal Identification
    GTY528044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N5 driving support ECU assembly connector.
      NOTE:

      If a load of more than 10 kg (22 lb.) is placed on the connector, it may break. Do not place more load than is necessary on the connector.

    2. 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
      N5-5 (PBSW) - Body ground L - Body ground Pre-collision system cancel switch signal Pre-collision system cancel switch on Below 1 Ω
      N5-5 (PBSW) - Body ground L - Body ground Pre-collision system cancel switch signal Pre-collision system cancel switch off 10 kΩ or higher
      N5-17 (CA2L) - Body ground LG - Body ground CAN communication system Power switch on (IG) Pulse generation
      (See waveform 2)
      N5-18 (CA1N) - Body ground W - Body ground CAN communication system Power switch on (IG) Pulse generation
      (See waveform 2)
      N5-25 (GND) - Body ground BR - Body ground Body ground Always Below 1 Ω
      N5-27 (STP-) - Body ground R - Body ground Stop light switch signal input Brake pedal depress 11 to 14 V
      N5-27 (STP-) - Body ground R - Body ground Stop light switch signal input Brake pedal release Below 1 V
      N5-28 (ST1-) - Body ground GR - Body ground Stop light switch signal input Power switch on (IG),
      brake pedal release      		 11 to 14 V
      N5-28 (ST1-) - Body ground GR - Body ground Stop light switch signal input Power switch on (IG),
      brake pedal depress      		 Below 1 V
      N5-30 (B) - Body ground L - Body ground Power supply Power switch on (IG) 11 to 14 V
      N5-30 (B) - Body ground L - Body ground Power supply Power switch off Below 1 V
      N5-39 (CA2H) - Body ground V - Body ground CAN communication system Power switch on (IG) Pulse generation
      (See waveform 1)
      N5-40 (CA1P) - Body ground G - Body ground CAN communication system Power switch on (IG) Pulse generation
      (See waveform 1)

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

    3. Using an oscilloscope, check waveform 1.
      Fig 3: Waveform 1
      GTY526045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      MEASUREMENT CONDITION

      Item Content
      Tester Connection
      • N5-39 (CA2H) - Body ground
      • N5-40 (CA1P) - Body ground
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Vehicle Condition Power switch on (IG)

      Using an oscilloscope, check waveform 2.

      Fig 4: Waveform 2
      GTY535072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      MEASUREMENT CONDITION

      Item Content
      Tester Connection
      • N5-17 (CA2L) - Body ground
      • N5-18 (CA1N) - Body ground
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Vehicle Condition Power switch on (IG)
  3. CHECK DRIVER MONITOR ECU ASSEMBLY 
    Fig 5: Driver Monitor ECU Assembly Connector Terminal Identification
    GTY531910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N4 driver monitor ECU assembly connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N4-1 (IG) - N4-2 (GND) LG - W-B Camera power supply Power switch on (IG) 11 to 14 V
      N4-1 (IG) - N4-2 (GND) LG - W-B Camera power supply Power switch off Below 1 V
      N4-2 (GND) - Body ground W-B - Body ground Body ground Always Below 1 V
      N4-16 (CGND) - Body ground B - Body ground Camera ground Always Below 1 Ω

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

    3. Reconnect the N4 driver monitor ECU assembly connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N4-11 (CANL) - Body ground W - Body ground CAN communication system Power switch on (IG) Pulse generation
      (See waveform 1)
      N4-12 (CANH) - Body ground R - Body ground CAN communication system Power switch on (IG) Pulse generation
      (See waveform 2)
      N4-13 (CB+) - Body ground W - Body ground Camera power supply power switch on (IG) 5.5 to 6.5 V
      N4-13 (CB+) - Body ground W - Body ground Camera power supply Power switch off Below 1 V
      N4-14 (CV+) - N4-15 (CV-) R - Shielded Camera output Power switch on (IG) Pulse generation
    5. Using an oscilloscope, check waveform 1.
      Fig 6: Waveform 2
      GTY535072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      MEASUREMENT CONDITION

      Item Content
      Tester Connection N4-11 (CANL) - Body ground
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Vehicle Condition Power switch on (IG)
    6. Using an oscilloscope, check waveform 2.
      Fig 7: Waveform 1
      GTY526045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      MEASUREMENT CONDITION

      Item Content
      Tester Connection N4-12 (CANH) - Body ground
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Vehicle Condition Power switch on (IG)
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