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


  1. CHECK ENGINE SWITCH


    1. A01QTB4E09

      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
      G24-6 (AGND) - Body ground - BR - Body ground Transponder key amplifier ground Always Below 1 Ω -
      G24-7 (TXCT) - G24-6 (AGND) Input L - BR Immobiliser communication input Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      G24-8 (CODE) - G24-6 (AGND) Output W - BR Immobiliser communication output Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      G24-10 (VC5) - G24-6 (AGND) Input R - BR Transponder key amplifier power supply Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -

      *1: except Manual Transaxle

      *2: 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
      G24-7 (TXCT) - G24-6 (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 certification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
      G24-8 (CODE) - G24-6 (AGND) Output W - 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)
      G24-10 (VC5) - G24-6 (AGND) Input R - 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)

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      • Frame Error

      • Response

      Tech Tips

      If immobiliser key code certification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above

      Tech Tips

      *: Remove the key battery before performing this inspection.

    3. Inspect using an oscilloscope.

      Note

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


      1. A01QPIEE18

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G24-7 (TXCT) - G24-6 (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. A01QT4IC17
        *a Key held near engine switch

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G24-8 (CODE) - G24-6 (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. A01QUIBE01

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G24-10 (VC5) - G24-6 (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)

    A01QQRMN71

    1. Disconnect the G82 certification ECU (smart key ECU assembly) connector.

    2. Measure the resistance and voltage according to the value(s) in the table below.

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      G82-2 (+B) - G82-11 (E) Input W - BR +B power supply Always 11 to 14 V -
      G82-10 (CUTB) - G82-11 (E) Input P - BR Dark current cut pin Always 11 to 14 V -
      G82-11 (E) - Body ground - BR - Body ground Ground Always Below 1 Ω -

    3. Reconnect the G82 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
      G84-5 (IG) - G82-11 (E) Input LG - BR Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V Ignition Switch
      G84-18 (IND) - G82-11 (E) Output GR - BR Security indicator output Engine switch off → on (IG) Pulse generation→ Below 2 V -
      G84-9 (TXCT) - G84-24 (AGND) Output L - BR Signal output to transponder key amplifier Engine switch off, brake pedal*1 or clutch pedal*2 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
      G84-7 (CODE) - G84-24 (AGND) Input W - BR Signal input from transponder key amplifier Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      G84-1 (VC5) - G84-24 (AGND) Output R - BR Transponder key amplifier power supply Engine switch off, brake pedal*1 or clutch pedal*2 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
      G84-24 (AGND) - Body ground - BR - Body ground Transponder key amplifier ground Always Below 1 Ω -
      G82-14 (EFII) - G82-11 (E)*3 Input LG - BR EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly]) Engine switch off 11 to 14 V

      • B2799

      • B279A

      • Engine Start Request

      • EFI Code Receive
      G82-13 (EFIO) - G82-11 (E)*3 Output P - BR EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM) Engine switch off Below 1 V

      *1: except Manual Transaxle

      *2: for Manual Transaxle

      *3: w/o ID code box (Immobiliser Code ECU)

    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
      G84-9 (TXCT) - G84-24 (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
      G84-7 (CODE) - G84-24 (AGND) Input W - 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*1

      Pulse generation

      (See waveform 2)
      G84-1 (VC5) - G84-24 (AGND) Output R - 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)
      G82-14 (EFII) - G82-11 (E)*2 Input LG - BR EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly]) Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 4)

      • B2799

      • B279A

      • Engine Start Request

      • EFI Code Receive
      G82-13 (EFIO) - G82-11 (E)*2 Output P - BR EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM) Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 5)

      Tech Tips


      • *1: Remove the key battery before performing this inspection.

      • *2: w/o ID code box (Immobiliser Code ECU)

    6. Inspect using an oscilloscope.

      Note

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


      1. A01QPIEE17

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G84-9 (TXCT) - G84-24 (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. A01QT4IC16
        *a Key held near engine switch

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G84-7 (CODE) - G84-24 (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. A01QUIBE01

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G84-1 (VC5) - G84-24 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

      4. Waveform 4 (Reference)

        A01QT34C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G82-14 (EFII) - G82-11 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      5. Waveform 5 (Reference)

        A01QTUMC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G82-13 (EFIO) - G82-11 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ ID code box [Immobiliser Code ECU])


    1. Disconnect the G44 ID code box (immobiliser code ECU) connector.

    2. A01QTXCN02

      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
      G44-1 (+B) - Body ground Input BE - Body ground +B power supply Engine switch off 11 to 14 V B2789
      G44-5 (GND) - Body ground - B - 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 G44 ID code box (immobiliser code ECU) connector.

    4. Measure the voltage and check the pulse 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
      G44-3 (EFII) - G44-5 (GND) Input LG - B EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly]) Engine switch off 11 to 14 V

      • B2799

      • B279A

      • Engine Start Request

      • EFI Code Receive
      G44-4 (EFIO) - G44-5 (GND) Output P - B EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM) Engine switch off Below 1 V
      G44-3 (EFII) - G44-5 (GND) Input LG - B EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly]) Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1)
      G44-4 (EFIO) - G44-5 (GND) Output P - B EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM) Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2)

    5. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01QT34C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G44-3 (EFII) - G44-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01QTUMC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G44-4 (EFIO) - G44-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

  4. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)


    1. A01QT62N06

      Measure the voltage and resistance and check the pulse 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
      G5-1 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      G5-3 (IGE) - G5-1 (GND) Input Y - 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 (except Manual Transaxle)

      • 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
      G5-4 (SLP1) - G5-1 (GND) Output G - W-B Steering lock bar position signal (signal output from steering unlock sensor) Steering locked → unlocked* 11 to 14 V → Below 1.2 V

      • Push Start Error

      • Sensor Value
      G5-6 (IG2) - G5-1 (GND) Input P - 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
      G5-7 (B) - Body ground Output L - Body ground Constant power supply Always 11 to 14 V B2788

      Tech Tips

      *: The steering locks when any door is opened with the shift lever in P (except Manual Transaxle) and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).

    2. Inspect using an oscilloscope.

      Note

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


      1. A01QUEIC03
        *a Steering lock motor not operating
        *b Steering lock motor operating

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G5-3 (IGE) - G5-1 (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*

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

        *: except Manual Transaxle

  5. CHECK ECM (for 2AR-FE)

    A01QPJ0E04

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    A62-3 (+B2) - B77-16 (E1) Input P - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-2 (+B) - B77-16 (E1) Input R - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-46 (MREL) - B77-16 (E1) Input P - BR EFI MAIN1 relay Engine switch on (IG) 11 to 14 V -
    A62-1 (BATT) - B77-16 (E1) Input W - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
    B77-16 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
    A62-29 (IMO) - B77-16 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Engine switch off 11 to 14 V -
    A62-29 (IMO) - B77-16 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-28 (IMI) - B77-16 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Engine switch off Below 1 V -
    A62-28 (IMI) - B77-16 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2) -

    1. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01QT34C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-29 (IMO) - B77-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01QTUMC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-28 (IMI) - B77-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

  6. CHECK ECM (for 3ZR-FE [for K111, K111F])

    A01QPJ0E05

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    A62-3 (+B2) - B75-16 (E1) Input P - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-2 (+B) - B75-16 (E1) Input R - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-46 (MREL) - B75-16 (E1) Input P - BR EFI MAIN1 relay Engine switch on (IG) 11 to 14 V -
    A62-1 (BATT) - B75-16 (E1) Input W - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
    B75-16 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
    A62-29 (IMO) - B75-16 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Engine switch off 11 to 14 V -
    A62-29 (IMO) - B75-16 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-28 (IMI) - B75-16 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Engine switch off Below 1 V -
    A62-28 (IMI) - B75-16 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2) -

    1. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01QT34C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-29 (IMO) - B75-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01QTUMC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-28 (IMI) - B75-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

  7. CHECK ECM (for 3ZR-FE [except K111, K111F], 3ZR-FAE)

    A01QPJ0E07

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    A62-3 (+B2) - B93-59 (E1) Input P - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-2 (+B) - B93-59 (E1) Input R - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-46 (MREL) - B93-59 (E1) Input P - BR EFI MAIN1 relay Engine switch on (IG) 11 to 14 V -
    A62-1 (BATT) - B93-59 (E1) Input W - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
    B93-59 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
    A62-45 (IMO) - B93-59 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Engine switch off 11 to 14 V -
    A62-45 (IMO) - B93-59 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-28 (IMI) - B93-59 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Engine switch off Below 1 V -
    A62-28 (IMI) - B93-59 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2) -

    1. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01QT34C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-45 (IMO) - B93-59 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01QTUMC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-28 (IMI) - B93-59 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

  8. CHECK ECM (for 2AD-FHV, 2AD-FTV [for DPF], 2AD-FTV [for CCo])

    A01QPIRE29

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    A61-20 (+B2) - B76-109 (E1) Input B - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A61-1 (+B) - B76-109 (E1) Input B - BR Power source of ECM Engine switch on (IG) 11 to 14 V -
    A61-45 (MREL) - B76-109 (E1) Input B - BR EFI MAIN1 relay Engine switch on (IG) 11 to 14 V -
    A61-2 (BATT) - B76-109 (E1) Input W - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
    B76-109 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
    A61-15 (IMO) - B76-109 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Engine switch off 11 to 14 V -
    A61-15 (IMO) - B76-109 (E1) Input LG - BR Certification ECU (smart key ECU assembly) communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A61-16 (IMI) - B76-109 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Engine switch off Below 1 V -
    A61-16 (IMI) - B76-109 (E1) Output P - BR Certification ECU (smart key ECU assembly) communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2) -

    1. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01QT34C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A61-15 (IMO) - B76-109 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01QTUMC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A61-16 (IMI) - B76-109 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

  9. CHECK ECM (for 2WW)

    A01QOYEE05

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
    A62-14 (+B2) - B112-4 (E1) Input B - W-B Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-2 (+B) - B112-4 (E1) Input B - W-B Power source of ECM Engine switch on (IG) 11 to 14 V -
    A62-9 (MREL) - B112-4 (E1) Input B - W-B EFI MAIN1 relay Engine switch on (IG) 11 to 14 V -
    A62-15 (BATT) - B112-4 (E1) Input W - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
    B112-4 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
    A62-44 (IMO) - B112-4 (E1) Input LG - W-B Certification ECU (smart key ECU assembly) communication input Engine switch off 11 to 14 V -
    A62-44 (IMO) - B112-4 (E1) Input LG - W-B Certification ECU (smart key ECU assembly) communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-34 (IMI) - B112-4 (E1) Output P - W-B Certification ECU (smart key ECU assembly) communication output Engine switch off Below 1 V -
    A62-34 (IMI) - B112-4 (E1) Output P - W-B Certification ECU (smart key ECU assembly) communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2) -

    1. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01QT34C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-44 (IMO) - B112-4 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01QTUMC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-34 (IMI) - B112-4 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal