IMMOBILISER SYSTEM(w/ Entry and Start System) TERMINALS OF ECU


  1. CHECK ENGINE SWITCH

    A00Y8BGN09

    1. Measure the resistance and voltage 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
      E36-6 (AGND) - Body ground - BR - Body ground Transponder key amplifier ground Always Below 1 Ω -
      E36-7 (TXCT) - E36-6 (AGND) Input L - BR Immobiliser communication input Engine switch off, brake pedal*1,*2 or clutch pedal*3 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      E36-8 (CODE) - E36-6 (AGND) Output P - BR Immobiliser communication output Engine switch off, brake pedal*1,*2 or clutch pedal*3 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      E36-10 (VC5) - E36-6 (AGND) Input W - BR Transponder key amplifier power supply Engine switch off, brake pedal*1,*2 or clutch pedal*3 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -

      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      • *3: for Manual Transaxle

    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
      E36-7 (TXCT) - E36-6 (AGND) Input L - BR

      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

        Tech Tips

        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
      E36-8 (CODE) - E36-6 (AGND) Output P - BR

      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)
      E36-10 (VC5) - E36-6 (AGND) Input W - BR

      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)

      If the result is not as specified, the engine switch may be malfunctioning.

      Tech Tips

      *: Remove the key battery before performing this inspection.

    3. Using an oscilloscope, check the waveform.

      Tech Tips

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


      1. A00YA2NN18

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection E36-7 (TXCT) - E36-6 (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. A00Y51LC11
        *a Key held near engine switch

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection E36-8 (CODE) - E36-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, engine switch pressed with key held near engine switch*

        Tech Tips

        *: Remove the key battery before performing this inspection.

      3. A00Y6HON05

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection E36-10 (VC5) - E36-6 (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)

    A00Y5B2N39

    1. Disconnect the E33 certification ECU (smart key ECU assembly) connector.

    2. Measure the resistance and voltage 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
      E33-2 (+B) - E33-11 (E) Input L- W-B +B power supply Always 11 to 14 V -
      E33-10 (CUTB) - E33-11 (E) Input LG - W-B Stand-by power Always 11 to 14 V -
      E33-11 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -

    3. Reconnect the E33 certification ECU (smart key ECU assembly) connector.

    4. Measure the resistance and voltage 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
      E35-5 (IG) - E33-11 (E) Input GR - W-B Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V Ignition Switch
      E35-18 (IND) - E33-11 (E) Output Y - W-B Security indicator output Engine switch off → on (IG)

      Pulse generation

      → Below 2 V

      		 -
      E35-9 (TXCT) - E35-24 (AGND) Output L - BR Signal output to transponder key amplifier Engine switch off, brake pedal*1,*2 or clutch pedal*3 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
      E35-7 (CODE) - E35-24 (AGND) Input P - BR Signal input from transponder key amplifier Engine switch off, brake pedal*1,*2 or clutch pedal*3 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      E35-1 (VC5) - E35-24 (AGND) Output W - BR Transponder key amplifier power supply Engine switch off, brake pedal*1,*2 or clutch pedal*3 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      E35-24 (AGND) - Body ground - BR - Body ground Transponder key amplifier ground Always Below 1 Ω

      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      • *3: for Manual Transaxle

    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
      E35-9 (TXCT) - E35-24 (AGND) Output L - BR

      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
      E35-7 (CODE) - E35-24 (AGND) Input P - BR

      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)
      E35-1 (VC5) - E35-24 (AGND) Output W - BR

      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)

      If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.

      Tech Tips

      *: Remove the key battery before performing this inspection.

    6. Using an oscilloscope, check the waveform.

      Tech Tips

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


      1. A00YA2NN19

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection E35-9 (TXCT) - E35-24 (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. A00Y51LC11
        *a Key held near engine switch

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection E35-7 (CODE) - E35-24 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, engine switch pressed with key held near engine switch*

        Tech Tips

        *: Remove the key battery before performing this inspection.

      3. A00Y6HON06

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection E35-1 (VC5) - E35-24 (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 STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

    A00Y9F4N25

    1. Measure the voltage resistance and check for pulses 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
      E37-1 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      E37-3 (IGE) - E37-1 (GND) Input P - W-B Steering lock motor operation permission signal (motor operation permission signal supplied by certification ECU (smart key ECU assembly))

      Steering lock motor operates when both conditions met, and then door opened:


      • Shift lever in P*1 or N*2

      • Key carried, engine switch turned on (IG), steering unlocked, and then engine switch turned off

      Pulse generation

      (See waveform 1)

      • Power Supply Short

      • Unlock Request Receive

      • Lock Request Receive
      E37-4 (SLP1) - E37-1 (GND) Output G - W-B Steering lock bar position signal (signal output from steering unlock sensor) Steering locked → unlocked*1 11 to 14 V → Below 1.2 V

      • Push Start Error

      • Sensor Value
      E37-6 (IG2) - E37-1 (GND) Input GR - W-B IG signal (IG2 power supply input for steering lock motor) Engine switch off → on (IG) Below 1 V → 11 to 14 V

      • B2788

      • Ignition Switch
      E37-7 (B) - Body ground Output L - Body ground Constant power supply Always 11 to 14 V B2788

      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      If the result is not as specified, the steering lock ECU (steering lock actuator assembly) may be malfunctioning.

      Tech Tips

      *1: The steering locks when any door is opened with the shift lever in P*1 or N*2 and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

    2. Using an oscilloscope, check the waveform.

      Tech Tips

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


      1. A00Y6WXC03
        *a Steering lock motor not operating
        *b Steering lock motor operating

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection E37-3 (IGE) - E37-1 (GND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition

        Steering lock motor operates when both conditions met, and then door opened:


        • Shift lever in P*1 or N*2

        • Key carried, engine switch turned on (IG), steering unlocked, and then engine switch turned off

        • *1: for CVT

        • *2: for Multi-Mode Manual Transaxle

  4. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    A00YAGIN11

    1. Disconnect the E87 ID code box (immobiliser code ECU) connector.

    2. Measure the resistance and voltage 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
      E87-1 (+B) - E87-5 (GND) Input W - BR +B power supply Always 11 to 14 V B2789
      E87-5 (GND) - Body ground - BR - Body ground Ground Always Below 1 Ω B2789

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

    3. Reconnect the E87 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
      E87-3 (EFII) - E87-5 (GND) Input LG - 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)

      • B2799

      • B279A

      • Engine Start Request

      • EFI Code Receive
      E87-4 (EFIO) - E87-5 (GND) Output P - BR

      EFI communication output

      (Signal output from ID code box (immobiliser code ECU) to ECM)

      		 Engine switch off Below 1 V
      E87-4 (EFIO) - E87-5 (GND) Output P - BR

      EFI communication output

      (Signal output from ID code box (immobiliser code ECU) to ECM)

      		 Engine switch on (IG)

      Pulse generation

      (See waveform 2)

      • If the result is not as specified, the ID code box (immobiliser code ECU) may be malfunctioning.

    5. Using an oscilloscope, check the waveform.

      Tech Tips

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


      1. Waveform 1 (Reference)

        A00Y879C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection E87-3 (EFII) - E87-5 (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)

        A00Y7KFC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection E87-4 (EFIO) - E87-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Engine switch on (IG)

  5. CHECK ECM (for 1NR-FE or 1ZR-FAE)

    A00YAA4N06
    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    B31-16 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
    A50-1 (BATT) - B31-16 (E1) Input P - BR +B power supply Always 11 to 14 V -
    A50-2 (+B) - B31-16 (E1) Input B - BR +B power supply Engine switch on (IG) 11 to 14 V -
    A50-3 (+B2) - B31-16 (E1) Input B - BR +B power supply Engine switch on (IG) 11 to 14 V -
    A50-29 (IMO) - B31-16 (E1) Input LG - 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 1)

    		 -
    A50-28 (IMI) - B31-16 (E1) Output P - BR ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V -
    A50-28 (IMI) - B31-16 (E1) Output P - BR ID code box (immobiliser code ECU) communication output Engine switch on (IG)

    Pulse generation

    (See waveform 2)

    		 -

    1. Using an oscilloscope, check the waveform.

      Tech Tips

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


      1. Waveform 1 (Reference)

        A00Y879C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A50-29 (IMO) - B31-16 (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)

        A00Y7KFC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A50-28 (IMI) - B31-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Engine switch on (IG)

  6. CHECK ECM (for 1ND-TV)

    A00Y98BN01
    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    A101-2 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
    A101-23 (BATT) - A101-2 (E1) Input W - W-B +B power supply Always 11 to 14 V -
    A101-1 (+B) - A101-2 (E1) Input B - W-B +B power supply Engine switch on (IG) 11 to 14 V -
    A101-61 (+B2) - A101-2 (E1) Input B - W-B +B power supply Engine switch on (IG) 11 to 14 V -
    A101-78 (IMO) - A101-2 (E1) Input LG - 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 1)

    		 -
    A101-77 (IMI) - A101-2 (E1) Output P - W-B ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V -
    A101-77 (IMI) - A101-2 (E1) Output P - W-B ID code box (immobiliser code ECU) communication output Engine switch on (IG)

    Pulse generation

    (See waveform 2)

    		 -

    1. Using an oscilloscope, check the waveform.

      Tech Tips

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


      1. Waveform 1 (Reference)

        A00Y879C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A101-78 (IMO) - A101-2 (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)

        A00Y7KFC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A101-77 (IMI) - A101-2 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Engine switch on (IG)

  7. CHECK ECM (for 1AD-FTV)

    A00Y9CAN04
    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    B164-109 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
    A118-2 (BATT) - B164-109 (E1) Input W - BR +B power supply Always 11 to 14 V -
    A118-1 (+B) - B164-109 (E1) Input B - BR +B power supply Engine switch on (IG) 11 to 14 V -
    A118-20 (+B2) - B164-109 (E1) Input B - BR +B power supply Engine switch on (IG) 11 to 14 V -
    A118-15 (IMO) - B164-109 (E1) Input LG - 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 1)

    		 -
    A118-16 (IMI) - B164-109 (E1) Output P - BR ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V -
    A118-16 (IMI) - B164-109 (E1) Output P - BR ID code box (immobiliser code ECU) communication output Engine switch on (IG)

    Pulse generation

    (See waveform 2)

    		 -

    1. Using an oscilloscope, check the waveform.

      Tech Tips

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


      1. Waveform 1 (Reference)

        A00Y879C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A118-15 (IMO) - B164-109 (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)

        A00Y7KFC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A118-16 (IMI) - B164-109 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Engine switch on (IG)