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


  1. CHECK TRANSPONDER KEY ECU ASSEMBLY

    A01QS32N04

    1. Disconnect the G88 transponder 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
      G88-1 (+B) - G88-5 (GND) Input BE - BR Battery Always 11 to 14 V +B
      G88-2 (IG) - G88-5 (GND) Input LG - BR Ignition switch signal Ignition switch off Below 1 V IG SW
      Ignition switch ON 11 to 14 V
      G88-3 (KSW) - G88-5 (GND) Input P - BR Unlock warning switch signal No key in ignition key cylinder 10 kΩ or higher Key SW/B2780
      Key in ignition key cylinder Below 1 Ω
      G88-7 (CTY) - G88-5 (GND)* Input W - BR Driver door courtesy light switch signal Driver door closed 10 kΩ or higher D Door Courtesy SW
      Driver door open Below 1 Ω
      G88-5 (GND) - Body ground - BR - Body ground Ground Always Below 1 Ω -

      *: for key registration when not using GTS

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

    3. Reconnect the G88 transponder key ECU assembly connector.

    4. Measure the voltage and check for pulses according to the value(s) in the table below.

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      G88-8 (IND) - G88-5 (GND) Output GR - BR Security indicator signal No key in ignition key cylinder, or 20 seconds elapsed after turning ignition switch to ACC or off (immobiliser system set) Pulse generation Immobiliser
      Key in ignition key cylinder (immobiliser system unset) Below 1 V
      G88-9 (D) - G88-5 (GND) Input/Output Y - BR DLC3 communication Without communication Below 1 V -
      During communication Pulse generation
      G88-4 (ANT1) - G88-5 (GND) Input/Output R - BR Transponder key amplifier power source No key in ignition key cylinder 4 to 6 V -
      Within 3 seconds of inserting key into ignition key cylinder

      Pulse generation

      (See waveform 1)
      G88-15 (ANT2) - G88-5 (GND) Input/Output W - BR Transponder key amplifier communication signal No key in ignition key cylinder 4 to 6 V -
      Within 3 seconds of inserting key into ignition key cylinder

      Pulse generation

      (See waveform 2)
      G88-12 (EFII) - G88-5 (GND) Output LG - BR ECM input signal Ignition switch off 11 to 14 V -
      Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

      Pulse generation

      (See waveform 3)
      G88-13 (EFIO) - G88-5 (GND) Input P - BR ECM output signal Ignition switch off Below 1 V -
      Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

      Pulse generation

      (See waveform 4)

      If the result is not as specified, the transponder key ECU assembly may be malfunctioning.

    5. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        A01QPG2N02
        Measurement Condition
        Item Content
        Tester Connection G88-4 (ANT1) - G88-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of inserting key into ignition key cylinder

      2. Waveform 2 (Reference)

        A01QSQ3N02
        Measurement Condition
        Item Content
        Tester Connection G88-15 (ANT2) - G88-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of inserting key into ignition key cylinder

      3. Waveform 3 (Reference)

        A01QT34C02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G88-12 (EFII) - G88-5 (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 ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

      4. Waveform 4 (Reference)

        A01QTUMC01
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G88-13 (EFIO) - G88-5 (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 ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

  2. 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 Always 11 to 14 V -
    A62-2 (+B) - B77-16 (E1) Input R - BR Power source of ECM Always 11 to 14 V -
    A62-46 (MREL) - B77-16 (E1) Input P - BR EFI MAIN1 relay Always 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 Transponder key ECU assembly communication input Ignition switch off 11 to 14 V -
    A62-29 (IMO) - B77-16 (E1) Input LG - BR Transponder key ECU assembly communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-28 (IMI) - B77-16 (E1) Output P - BR Transponder key ECU assembly communication output Ignition switch off Below 1 V -
    A62-28 (IMI) - B77-16 (E1) Output P - BR Transponder key ECU assembly communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON 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 ignition switch first being turned to ON 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 ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

  3. 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 Always 11 to 14 V -
    A62-2 (+B) - B75-16 (E1) Input R - BR Power source of ECM Always 11 to 14 V -
    A62-46 (MREL) - B75-16 (E1) Input P - BR EFI MAIN1 relay Always 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 Transponder key ECU assembly communication input Ignition switch off 11 to 14 V -
    A62-29 (IMO) - B75-16 (E1) Input LG - BR Transponder key ECU assembly communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-28 (IMI) - B75-16 (E1) Output P - BR Transponder key ECU assembly communication output Ignition switch off Below 1 V -
    A62-28 (IMI) - B75-16 (E1) Output P - BR Transponder key ECU assembly communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON 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 ignition switch first being turned to ON 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 ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

  4. 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 Always 11 to 14 V -
    A62-2 (+B) - B93-59 (E1) Input R - BR Power source of ECM Always 11 to 14 V -
    A62-46 (MREL) - B93-59 (E1) Input P - BR EFI MAIN1 relay Always 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 Transponder key ECU assembly communication input Ignition switch off 11 to 14 V -
    A62-45 (IMO) - B93-59 (E1) Input LG - BR Transponder key ECU assembly communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-28 (IMI) - B93-59 (E1) Output P - BR Transponder key ECU assembly communication output Ignition switch off Below 1 V -
    A62-28 (IMI) - B93-59 (E1) Output P - BR Transponder key ECU assembly communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON 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 ignition switch first being turned to ON 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 ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

  5. 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 Always 11 to 14 V -
    A61-1 (+B) - B76-109 (E1) Input B - BR Power source of ECM Always 11 to 14 V -
    A61-45 (MREL) - B76-109 (E1) Input B - BR EFI MAIN1 relay Always 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 Transponder key ECU assembly communication input Ignition switch off 11 to 14 V -
    A61-15 (IMO) - B76-109 (E1) Input LG - BR Transponder key ECU assembly communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A61-16 (IMI) - B76-109 (E1) Output P - BR Transponder key ECU assembly communication output Ignition switch off Below 1 V -
    A61-16 (IMI) - B76-109 (E1) Output P - BR Transponder key ECU assembly communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON 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 ignition switch first being turned to ON 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 ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

  6. CHECK ECM (for 2WW)

    A01QPJ0E13

    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
    A61-14 (+B2) - A62-4 (E1) Input B - W-B Power source of ECM Always 11 to 14 V -
    A61-2 (+B) - A62-4 (E1) Input B - W-B Power source of ECM Always 11 to 14 V -
    A61-9 (MREL) - A62-4 (E1) Input B - W-B EFI MAIN1 relay Always 11 to 14 V -
    A61-15 (BATT) - A62-4 (E1) Input W - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
    A62-4 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
    A62-44 (IMO) - A62-4 (E1) Input LG - W-B Transponder key ECU assembly communication input Ignition switch off 11 to 14 V -
    A62-44 (IMO) - A62-4 (E1) Input LG - W-B Transponder key ECU assembly communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1) -
    A62-34 (IMI) - A62-4 (E1) Output P - W-B Transponder key ECU assembly communication output Ignition switch off Below 1 V -
    A62-34 (IMI) - A62-4 (E1) Output P - W-B Transponder key ECU assembly communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON 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) - A62-4 (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 ignition switch first being turned to ON 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) - A62-4 (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 ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal