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Terminals Of Ecu

  1. CHECK POWER MANAGEMENT CONTROL ECU 
    Fig 1: Power Management Control ECU Connector Terminal Identification
    GTY232737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A22, L5 and L6 connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A22-2 (IG2D) - Body ground V - Body ground IG2 relay operation signal Always 131 to 230 Ω
      A22-23 (STP) - Body ground L - Body ground Stop light switch signal Brake pedal depressed 11 to 14 V
      A22-23 (STP) - Body ground L - Body ground Stop light switch signal Brake pedal released Below 1 V
      L5-1 (AM22) - Body ground W - Body ground +B power supply Always 9.5 to 16 V
      L6-7 (AM21) - Body ground W - Body ground +B power supply Always 9.5 to 16 V
      L5-6 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      L6-24 (CA1L) - Body ground W - Body ground CAN communication line Always 10 kΩ or higher
      L6-25 (CA1H) - Body ground B - Body ground CAN communication line Always 10 kΩ or higher
      L6-17 (SSW2) - Body ground Y - Body ground Power switch signal Power switch pushed Below 1 Ω
      L6-17 (SSW2) - Body ground Y - Body ground Power switch signal Power switch not pushed 10 kΩ or higher
      L5-7 (SSW1) - Body ground B - Body ground Power switch signal Power switch pushed Below 1 Ω
      L5-7 (SSW1) - Body ground B - Body ground Power switch signal Power switch not pushed 10 kΩ or higher
      L6-1 (ACCD) - Body ground G - Body ground ACC relay operation signal Always 50.625 to 61.875 Ω
      L6-2 (IG1D) - Body ground B - Body ground IG1 relay operation signal Always 50.625 to 61.875 Ω
      L6-11 (LIN2) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher

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

    3. Reconnect the A22, L5 and L6 connectors.
    4. Measure the voltage and check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A22-2 (IG2D) - L5-6 (E1) V - BR IG2 signal Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more
      A22-2 (IG2D) - L5-6 (E1) V - BR IG2 signal Power switch on (ACC) Below 1 V
      L5-9 (INDW) - L5-6 (E1) G - BR Warning signal Brake pedal depressed, park (P) selected, power switch on (ACC, IG) 8 to 14 V
      A22-22 (PCON) - L5-6 (E1) LG - BR P position signal Park (P) selected Pulse generation
      (See waveform 1)
      A22-28 (PPOS) - L5-6 (E1) W - BR P position signal Park (P) selected Pulse generation
      (See waveform 1)
      L6-17 (SSW2) - L5-6 (E1) Y - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more
      L6-17 (SSW2) - L5-6 (E1) Y - BR Power switch signal Power switch pushed Below 1 V
      L5-7 (SSW1) - L5-6 (E1) B - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more
      L5-7 (SSW1) - L5-6 (E1) B - BR Power switch signal Power switch pushed Below 1 V
      L6-1 (ACCD) - L5-6 (E1) G - BR ACC signal Power switch on (ACC) Output voltage at terminal AM21 or AM22 is -2 V or more
      L6-1 (ACCD) - L5-6 (E1) G - BR ACC signal Power switch off Below 1 V
      L6-2 (IG1D) - L5-6 (E1) B - BR IG1 signal Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more
      L6-2 (IG1D) - L5-6 (E1) B - BR IG1 signal Power switch on (ACC) Below 1 V
      L5-8 (INDS) - L5-6 (E1) R - BR Vehicle condition signal Brake pedal depressed, park (P) selected 8 to 14 V
      L5-14 (SPDI) - L5-6 (E1) V - BR Vehicle speed signal Power switch on (IG), wheel rotated slowly Pulse generation
      (See waveform 2)
      L6-20 (IMO) - L5-6 (E1) L - BR Immobilizer communication status Immobilizer communicating Pulse generation
      (See waveform 3)
      L6-21 (IMI) - L5-6 (E1) R - BR Immobilizer communication status Immobilizer communicating Pulse generation
      (See waveform 4)

      If the result is not as specified, the ECU may have a malfunction.

    5. Using an oscilloscope, check the signal waveform of the ECU.
      1. Waveform 1
        Fig 2: Identifying Waveform 1
        GTY308625Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Tester Connection CH1: A22-22 (PCON) - L5-6 (E1)
        CH2: A22-28 (PPOS) - L5-6 (E1)
        Tool Setting 10 V/DIV., 10 ms./DIV.
        Vehicle Condition Power switch on (IG)
      2. Waveform 2
        Fig 3: Identifying Waveform 2
        GTY138951Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Tester Connection L5-14 (SPDI) - L5-6 (E1)
        Tool Setting 5 V/DIV., 10 ms./DIV.
        Vehicle Condition Driving at approx. 20 km/h (12 mph)

        HINT: 

        The wavelength becomes shorter as the vehicle speed increases.

      3. Waveform 3
        Fig 4: Identifying Waveform 3
        GTY213844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Tester Connection L6-20 (IMO) - L5-6 (E1)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Vehicle Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected
      4. Waveform 4
        Fig 5: Identifying Waveform 4
        GTY180510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Tester Connection L6-21 (IMI) - L5-6 (E1)
        Tool Setting 5 V/DIV., 50 ms./DIV.
        Vehicle Condition Power switch on (IG)
  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    Fig 6: Certification ECU (Smart Key ECU Assembly) Connector Terminal Identification
    GTY219900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L62 connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L62-1 (+B) - Body ground B - Body ground +B power supply Always 11 to 14 V
      L62-9 (CANH) - Body ground BE - Body ground CAN communication line Always 10 kΩ or higher
      L62-10 (CANL) - Body ground P - Body ground CAN communication line Always 10 kΩ or higher
      L62-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L62-16 (IG) - Body ground BE - Body ground IG power supply Power switch on (IG) 11 to 14 V
      L62-29 (LIN) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher

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

    3. Reconnect the L62 connector.
    4. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L62-34 (EFII) - L62-15 (E)*1 L - W-B Immobilizer communication status Immobilizer communicating Pulse generation
      (See waveform 1)
      L62-35 (EFIO) - L62-15 (E)*1 R - W-B Immobilizer communication status Immobilizer communicating Pulse generation
      (See waveform 1)
      • *1: except Canada

      If the result is not as specified, the ECU may have a malfunction.

    5. Using an oscilloscope, check the signal waveform of the ECU.
      1. Waveform 1
        Fig 7: Identifying Waveform 1
        GTY213749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Tester Connection CH1: L62-34 (EFII) - L62-15 (E)
        CH2: L62-35 (EFIO) - L62-15 (E)
        Tool Setting 5 V/DIV., 200 ms./DIV.
        Vehicle Condition Power switch off → Power switch on (IG) → Power switch on (READY)
  3. CHECK TRANSMISSION CONTROL ECU ASSEMBLY 
    Fig 8: Transmission Control ECU Assembly Connector Terminal Identification
    GTY229253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A23 and A24 connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A24-1 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      A24-5 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A24-6 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A23-16 (+B) - Body ground L - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      A23-16 (+B) - Body ground L - Body ground Ignition power supply Power switch off Below 1 V
      A23-15 (BATT) - Body ground SB - Body ground +B power supply Except power switch on (READY) 11 to 14 V
      A23-15 (BATT) - Body ground SB - Body ground +B power supply Power switch on (READY) 11 to 15.5 V
      A24-15 (CA1L) - Body ground BR - Body ground CAN communication line Always 10 kΩ or higher
      A24-16 (CA1H) - Body ground Y - Body ground CAN communication line Always 10 kΩ or higher
      A24-24 (LIN) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher
      • If the result is not as specified, there may be a malfunction in the wire harness.
  4. CHECK ID CODE BOX (IMMOBILIZER CODE ECU) [for Canada] 
    Fig 9: L10 ID Code Box (Immobilizer Code ECU) Connector Terminal Identification
    GTY221018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L10 connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L10-1 (+B) - L10-8 (GND) B - W-B +B power supply Always 11 to 14 V
      L10-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L10-3 (LIN1) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher

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

    3. Reconnect the L10 ID code box (immobilizer code ECU) connector.
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L10-5 (EFII) - L10-8 (GND) L - W-B Power management control ECU (HV CPU) output signal Power switch off 11 to 14 V
      L10-5 (EFII) - L10-8 (GND) L - W-B Power management control ECU (HV CPU) output signal Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected Pulse generation
      (See waveform 1)
      L10-6 (EFIO) - L10-8 (GND) R - W-B Power management control ECU (HV CPU) input signal Power switch off Below 1 V
      L10-6 (EFIO) - L10-8 (GND) R - W-B Power management control ECU (HV CPU) input signal Power switch on (IG) Pulse generation
      (See waveform 2)
      • If the result is not as specified, the ID code box (immobilizer code ECU) may have a malfunction.
    5. Inspect using an oscilloscope.
      1. Waveform 1 (Reference)
        Fig 10: Identifying Waveform 1
        GTY123956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection L10-5 (EFII) - L10-8 (GND)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected
      2. Waveform 2 (Reference)
        Fig 11: Identifying Waveform 2
        GTY180510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection L10-6 (EFIO) - L10-8 (GND)
        Tool Setting 5 V/DIV., 50 ms./DIV.
        Condition Power switch on (IG)
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