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


  1. CHECK TRANSPONDER KEY ECU ASSEMBLY

    A0029F3N08

    1. Disconnect the F66 transponder key ECU assembly connector.

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      F66-1 (+B) - F66-5 (GND) Input GR - W-B Battery Always 11 to 14 V +B
      F66-2 (IG) - F66-5 (GND) Input R - W-B Ignition switch signal Ignition switch off Below 1 V IG SW
      Ignition switch ON 11 to 14 V
      F66-3 (KSW) - F66-5 (GND) Input GR - W-B Unlock warning switch signal No door control transmitter assembly in ignition key cylinder 10 kΩ or higher

      • B2780

      • Key SW
      Door control transmitter assembly in ignition key cylinder Below 1 Ω
      F66-5 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -

    3. Reconnect the F66 transponder key ECU assembly 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
      F66-8 (IND) - F66-5 (GND) Output GR - W-B Security indicator signal No door control transmitter assembly in ignition key cylinder, or 20 sec. elapsed after turning ignition switch to ACC or off (immobiliser system set) Pulse generation Immobiliser
      Door control transmitter assembly in ignition key cylinder (immobiliser system unset) Below 1 V
      F66-9 (D) - F66-5 (GND) Input/Output SB - W-B DLC3 communication Without communication Below 1 V -
      During communication Pulse generation
      F66-4 (ANT1) - F66-5 (GND) Input/Output BE - W-B Transponder key amplifier power source No door control transmitter assembly in ignition key cylinder 4 to 6 V -
      Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

      Pulse generation

      (See waveform 1)
      F66-15 (ANT2) - F66-5 (GND) Input/Output L - W-B Transponder key amplifier communication signal No door control transmitter assembly in ignition key cylinder 4 to 6 V -
      Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

      Pulse generation

      (See waveform 2)
      F66-12 (EFII) - F66-5 (GND) Input W - W-B ECM input signal 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)

      		 -
      F66-13 (EFIO) - F66-5 (GND) Output B - W-B ECM output signal Ignition switch off Below 1 V -
      Ignition switch ON

      Pulse generation

      (See waveform 4)

    5. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        A002ADQN02
        Measurement Condition
        Item Content
        Tester Connection F66-4 (ANT1) - F66-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

      2. Waveform 2 (Reference)

        A0028ITN02
        Measurement Condition
        Item Content
        Tester Connection F66-15 (ANT2) - F66-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

      3. Waveform 3 (Reference)

        A0027P4C02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F66-12 (EFII) - F66-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition 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)

        A002AS8C01
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F66-13 (EFIO) - F66-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

  2. CHECK ECM (for 1AR-FE)

    A0027PZN36

    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
      C1-16 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      C1-50 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      C1-49 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      A43-1 (BATT) - C1-16 (E1) Input GR - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
      A43-3 (+B2) - C1-16 (E1) Input R - BR Power source of ECM Ignition switch ON 11 to 14 V -
      A43-2 (+B) - C1-16 (E1) Input G - BR Power source of ECM Ignition switch ON 11 to 14 V -
      A43-29 (IMO) - C1-16 (E1) Output W - BR Transponder key ECU assembly communication output 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)

      		 -
      A43-28 (IMI) - C1-16 (E1) Input B - BR Transponder key ECU assembly communication input Ignition switch off Below 1 V -
      Ignition switch ON

      Pulse generation

      (See waveform 2)

      		 -

    2. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        A0028ASC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A43-29 (IMO) - C1-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition 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)

        A002AS8C01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A43-28 (IMI) - C1-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

  3. CHECK ECM (for 2GR-FKS)

    A0027PZN37

    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
      C1-53 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      C1-51 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      C1-20 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      A43-1 (BATT) - C1-53 (E1) Input GR - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V -
      A43-3 (+B2) - C1-53 (E1) Input R - BR Power source of ECM Ignition switch ON 11 to 14 V -
      A43-2 (+B) - C1-53 (E1) Input G - BR Power source of ECM Ignition switch ON 11 to 14 V -
      A43-45 (IMO) - C1-53 (E1) Output W - BR Transponder key ECU assembly communication output 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)

      		 -
      A43-59 (IMI) - C1-53 (E1) Input B - BR Transponder key ECU assembly communication input Ignition switch off Below 1 V -
      Ignition switch ON

      Pulse generation

      (See waveform 2)

      		 -

    2. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        A0028ASC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A43-45 (IMO) - C1-53 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition 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)

        A002AS8C01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A43-59 (IMI) - C1-53 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON