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


  1. CHECK TRANSPONDER KEY ECU ASSEMBLY

    A005OZVE12

    1. Disconnect the F22 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.

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      F22-1 (+B) - F22-5 (GND) Input W - W-B Battery Always 11 to 14 V +B
      F22-2 (IG) - F22-5 (GND) Input B - W-B Ignition switch signal Ignition switch off Below 1 V IG SW
      Ignition switch ON 11 to 14 V
      F22-3 (KSW) - F22-5 (GND) Input V - W-B 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
      F22-5 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -

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

    3. Reconnect the F22 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
      F22-8 (IND) - F22-5 (GND) Output P - W-B Security indicator signal No key in ignition key cylinder, or 20 sec. 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
      F22-9 (D) - F22-5 (GND) Input/Output SB - W-B DLC3 communication Without communication Below 1 V -
      During communication Pulse generation
      F22-4 (ANT1) - F22-5 (GND) Input/Output V - W-B 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)

      F22-15 (ANT2) - F22-5 (GND) Input/Output W - W-B 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)

      F22-12 (EFII) - F22-5 (GND) Output G - 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)

      -
      F22-13 (EFIO) - F22-5 (GND) Input R - W-B ECM output signal Ignition switch off Below 1 V -
      Ignition switch ON

      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)

        A005QBWN02
        Tester Connection F22-4 (ANT1) - F22-5 (GND)
        Tool Setting 20 V/DIV., 2 s./DIV.
        Condition Within 3 seconds of inserting key into ignition key cylinder
      2. Waveform 2 (Reference)

        A005OTQN02
        Tester Connection F22-15 (ANT2) - F22-5 (GND)
        Tool Setting 20 V/DIV., 2 s./DIV.
        Condition Within 3 seconds of inserting key into ignition key cylinder
      3. Waveform 3 (Reference)

        A005ONKC02
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection F22-12 (EFII) - F22-5 (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)

        A005OBVC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection F22-13 (EFIO) - F22-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON
  2. CHECK ECM


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


      1. for 8NR-FTS:

        B008M4WE05
        Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
        C62-53 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
        A38-45 (IMO) - C62-53 (E1) Output GR - W-B ID code box (immobiliser code ECU) communication output Ignition switch off 11 to 14 V -
        A38-45 (IMO) - C62-53 (E1) Output GR - W-B ID code box (immobiliser code ECU) communication output Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery

        Pulse generation

        (See waveform 1)

        -
        A38-28 (IMI) - C62-53 (E1) Input BE - W-B ID code box (immobiliser code ECU) communication input Ignition switch off 11 to 14 V -
        A38-28 (IMI) - C62-53 (E1) Input BE - W-B ID code box (immobiliser code ECU) communication input Ignition switch turned on (IG) using registered electrical key transmitter sub-assembly

        Pulse generation

        (See waveform 2)

        -
      2. for 3ZR-FAE:

        A005Q9GE06
        Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
        C63-59 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
        A38-45 (IMO) - C63-59 (E1) Output GR - W-B ID code box (immobiliser code ECU) communication output Ignition switch off 11 to 14 V -
        A38-45 (IMO) - C63-59 (E1) Output GR - W-B ID code box (immobiliser code ECU) communication output Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery

        Pulse generation

        (See waveform 1)

        -
        A38-28 (IMI) - C63-59 (E1) Input BE - W-B ID code box (immobiliser code ECU) communication input Ignition switch off 11 to 14 V -
        A38-28 (IMI) - C63-59 (E1) Input BE - W-B ID code box (immobiliser code ECU) communication input Ignition switch turned ON using registered electrical key transmitter sub-assembly

        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)

        A005ONKC03
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection
        • A38-45 (IMO) - C62-53 (E1)*1

        • A38-45 (IMO) - C63-59 (E1)*2

        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of ignition switch turned ON after cable disconnected and reconnected to battery

        • *1: for 8NR-FTS

        • *2: for 3ZR-FAE

      2. Waveform 2 (Reference)

        A005OBVC02
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection
        • A38-28 (IMI) - C62-53 (E1)*1

        • A38-28 (IMI) - C63-59 (E1)*2

        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch turned ON using registered electrical key transmitter sub-assembly

        • *1: for 8NR-FTS

        • *2: for 3ZR-FAE