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Terminals Of Ecu [09/2022 - ]

  1. CHECK ENGINE SWITCH 
    Fig 1: Engine Switch Connector Terminal Identification
    GTY459133Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      K50-6 (AGND) - Body ground - LG - Body ground Transponder key amplifier ground Always Below 1 Ω -
      K50-7 (TXCT) - K50-6 (AGND) Input G - LG Immobiliser communication input Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      K50-8 (CODE) - K50-6 (AGND) Output B - LG Immobiliser communication output Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      K50-10 (VC5) - K50-6 (AGND) Input BE - LG Transponder key amplifier power supply Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
    2. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      K50-7 (TXCT) - K50-6 (AGND) Input G - LG Signal input from certification ECU (smart key ECU assembly)
      (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into engine switch, and then transmitted by transponder key amplifier antenna as radio waves)      		 Engine switch off, key not in cabin, within 30 seconds after engine switch pressed Pulse generation
      (See waveform 1)
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response

        HINT: 

        If immobiliser key code verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
      K50-8 (CODE) - K50-6 (AGND) Output B - LG Signal output to certification ECU (smart key ECU assembly)
      (Radio waves from transponder key amplifier built into engine switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))      		 Engine switch off, engine switch pressed with key held near engine switch* Pulse generation
      (See waveform 2)
      K50-10 (VC5) - K50-6 (AGND) Input BE - LG Transponder key amplifier power supply
      (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into engine switch activated)      		 Engine switch off, key not in cabin, within 30 seconds after engine switch pressed Pulse generation
      (See waveform 3)

      HINT: 

      *: Remove the transmitter battery before performing this inspection.

    3. Using an oscilloscope, check the waveform.
      NOTE:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1 (Reference)
        Fig 2: Waveform 1 (Reference)
        GTY429541Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K50-7 (TXCT) - K50-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed
      2. Waveform 2 (Reference)
        Fig 3: Waveform 2
        GTY433827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K50-8 (CODE) - K50-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, engine switch pressed with key held near engine switch*

        HINT: 

        *: Remove the transmitter battery before performing this inspection.

      3. Waveform 3 (Reference)
        Fig 4: Waveform 3 (Reference)
        GTY426468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K50-10 (VC5) - K50-6 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed
  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    Fig 5: Certification ECU (Smart Key ECU Assembly) Connector Terminal Identification
    GTY469145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the K6 certification ECU (smart key ECU assembly) connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      K6-10 (+B) - K6-11 (E) Input BE- BR +B power supply Always 11 to 14 V -
      K6-11 (E) - Body ground - BR - Body ground Ground Always Below 1 Ω -
    3. Reconnect the K6 certification ECU (smart key ECU assembly) connector.
    4. Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      A13-3 (IG1D) - K6-11 (E) Output V - BR Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V -
      K6-14 (TXCT) - K6-12 (AGND) Output G - LG Signal output to transponder key amplifier Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response
      K6-13 (CODE) - K6-12 (AGND) Input B - LG Signal input from transponder key amplifier Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      K6-15 (VC5) - K6-12 (AGND) Output BE - LG Transponder key amplifier power supply Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      K6-12 (AGND) - Body ground - LG - Body ground Transponder key amplifier ground Always Below 1 Ω
      K6-19 (IND) - K6-11 (E) Output G - BR Security indicator output Engine switch off → on (IG) Pulse generation → Below 2 V -
    5. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      K6-14 (TXCT) - K6-12 (AGND) Output G - LG Signal output to transponder key amplifier
      (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into engine switch, and then transmitted by transponder key amplifier antenna as radio waves)      		 Engine switch off, key not in cabin, within 30 seconds after engine switch pressed Pulse generation
      (See waveform 1)
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response
      K6-13 (CODE) - K6-12 (AGND) Input B - LG Signal input from transponder key amplifier
      (Radio waves from transponder key amplifier built into engine switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))      		 Engine switch off, engine switch pressed with key held near engine switch* Pulse generation
      (See waveform 2)
      K6-15 (VC5) - K6-12 (AGND) Output BE - LG Transponder key amplifier power supply
      (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into engine switch activated)      		 Engine switch off, key not in cabin, within 30 seconds after engine switch pressed Pulse generation
      (See waveform 3)

      HINT: 

      *: Remove the transmitter battery before performing this inspection.

    6. Using an oscilloscope, check the waveform.
      NOTE:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1 (Reference)
        Fig 6: Waveform 1 (Reference)
        GTY429542Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K6-14 (TXCT) - K6-12 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed
      2. Waveform 2 (Reference)
        Fig 7: Waveform 2
        GTY433828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K6-13 (CODE) - K6-12 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, engine switch pressed with key held near engine switch*

        HINT: 

        *: Remove the transmitter battery before performing this inspection.

      3. Waveform 3 (Reference)
        Fig 8: Waveform 3 (Reference)
        GTY426469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K6-15 (VC5) - K6-12 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed
  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU) 
    Fig 9: ID Code Box (Immobilizer Code ECU) Connector Terminal Identification
    GTY464788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the K83 ID code box (immobiliser code ECU) connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      K83-1 (+B) - Body ground Input G - Body ground +B power supply Always 11 to 14 V B2789
      K83-5 (GND) - Body ground - BR - Body ground Ground Always Below 1 Ω B2789
    3. Reconnect the K83 ID code box (immobiliser code ECU) connector.
    4. Measure the voltage and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      K83-3 (EFII) - K83-5 (GND) Input W - BR EFI communication input
      (Signal input from ECM to ID code box (immobiliser code ECU))      		 Engine switch off 11 to 14 V
      • B2799-86*1
      • B2799*2
      • B279A-12*1
      • B279A*2
      • EFI/EV Code Receive
      • Engine/System Start Request
      K83-4 (EFIO) - K83-5 (GND) Output P - BR EFI communication output
      (Signal output from ID code box (immobiliser code ECU) to ECM)      		 Engine switch off 11 to 14 V
      K83-3 (EFII) - K83-5 (GND) Input W - BR EFI communication input
      (Signal input from ECM to ID code box (immobiliser code ECU))      		 Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 1)
      K83-4 (EFIO) - K83-5 (GND) Output P - BR EFI communication output
      (Signal output from ID code box (immobiliser code ECU) to ECM)      		 Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 2)
      1. *1: except 2UR-GSE
      2. *2: for 2UR-GSE
    5. Using an oscilloscope, check the waveform.
      NOTE:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1 (Reference)
        Fig 10: Waveform 1
        GTY367336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K83-3 (EFII) - K83-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
      2. Waveform 2 (Reference)
        Fig 11: Waveform 2
        GTY384373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection K83-4 (EFIO) - K83-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
  4. CHECK ECM (for 2UR-GSE) 
    GTY1082744Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      A116-6 (+B2) - F154-1 (E1) Input B-R - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A116-7 (+B) - F154-1 (E1) Input B-R - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A116-3 (MREL) - F153-2 (E01) Input Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A116-5 (BATT) - F154-1 (E1) Input L - W-B +B power supply Always 11 to 14 V -
      F153-2 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F154-1 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F153-1 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F152-1 (+BM) - F154-1 (E1) Input L - W-B +B power supply Always 11 to 14 V  
      A116-9 (IMO) - F154-1 (E1) Output W - W-B ID code box (immobiliser code ECU) communication output Engine switch off 11 to 14 V -
      A116-9 (IMO) - F154-1 (E1) Output W - W-B ID code box (immobiliser code ECU) communication output Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 1)      		 -
      A116-8 (IMI) - F154-1 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Engine switch off 11 to 14 V -
      A116-8 (IMI) - F154-1 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 2)      		 -
    2. Using an oscilloscope, check the waveform.
      NOTE:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1 (Reference)
        Fig 12: Waveform 1
        GTY367336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection A116-9 (IMO) - F154-1 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
      2. Waveform 2 (Reference)
        Fig 13: Waveform 2
        GTY384373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection A116-8 (IMI) - F154-1 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
  5. CHECK ECM (for 2GR-FKS) 
    GTY822582Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      A106-3 (+B2) - F102-53 (E1) Input B-R - BR Ignition power supply Engine switch on (IG) 11 to 14 V -
      A106-2 (+B) - F102-53 (E1) Input R - BR Ignition power supply Engine switch on (IG) 11 to 14 V -
      A106-46 (MREL) - F102-51 (E01) Input Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A106-1 (BATT) - F102-53 (E1) Input L - BR +B power supply Always 11 to 14 V -
      F102-51 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F102-53 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      F102-20 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      A106-8 (+BM) - F102-53 (E1) Input P - BR +B power supply Always 11 to 14 V  
      A106-45 (IMO) - F102-53 (E1) Output W - BR ID code box (immobiliser code ECU) communication output Engine switch off 11 to 14 V -
      A106-45 (IMO) - F102-53 (E1) Output W - BR ID code box (immobiliser code ECU) communication output Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 1)      		 -
      A106-59 (IMI) - F102-53 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Engine switch off 11 to 14 V -
      A106-59 (IMI) - F102-53 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 2)      		 -
    2. Using an oscilloscope, check the waveform.
      NOTE:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1 (Reference)
        Fig 14: Waveform 1
        GTY367336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection A106-45 (IMO) - F102-53 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
      2. Waveform 2 (Reference)
        Fig 15: Waveform 2
        GTY384373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection A106-59 (IMI) - F102-53 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
  6. CHECK ECM (for 8AR-FTS) 
    Fig 16: ECM (for 8AR-FTS) Connector Terminal Identification
    GTY652677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      A91-3 (+B2) - F78-53 (E1) Input B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A91-2 (+B) - F78-53 (E1) Input R - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A91-46 (MREL) - F78-51 (E01) Input Y - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A91-1 (BATT) - F78-53 (E1) Input L - W-B +B power supply Always 11 to 14 V -
      F78-51 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F78-53(E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F78-50 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F78-48 (+BM) - F78-53 (E1) Input P - W-B +B power supply Always 11 to 14 V  
      A91-45 (IMO) - F78-53 (E1) Output W - W-B ID code box (immobiliser code ECU) communication output Engine switch off 11 to 14 V -
      A91-45 (IMO) - F78-53 (E1) Output W - W-B ID code box (immobiliser code ECU) communication output Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 1)      		 -
      A91-28 (IMI) - F78-53 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Engine switch off 11 to 14 V -
      A91-28 (IMI) - F78-53 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
      (See waveform 2)      		 -
    2. Using an oscilloscope, check the waveform.
      NOTE:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1 (Reference)
        Fig 17: Waveform 1
        GTY367336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection A91-45 (IMO) - F78-53 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
      2. Waveform 2 (Reference)
        Fig 18: Waveform 2
        GTY384373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        MEASUREMENT CONDITION

        Item Content
        Tester Connection A91-28 (IMI) - F78-53 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
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