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


  1. CHECK TRANSPONDER KEY ECU ASSEMBLY

    B006ZZIN02

    1. Disconnect the K60 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
      K60-4 (+B) - K60-12 (GND) Input LA-GR - W-B Battery Always 11 to 14 V +B
      K60-5 (KSW) - K60-12 (GND) Input B - 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
      K60-12 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -

    3. Reconnect the K60 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
      K60-6 (IG) - K60-12 (GND) Input L - W-B Ignition switch signal Ignition switch off Below 1 V IG SW
      Ignition switch ON 11 to 14 V
      K60-8 (IND) - K60-12 (GND) Output W - W-B Security indicator light 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
      K60-9 (D) - K60-12 (GND) Input/Output L - W-B DLC3 communication Without communication Below 1 V -
      During communication Pulse generation
      K60-2 (ANT1) - K60-12 (GND) Input/Output R - W-B Transponder key amplifier power source No door control transmitter assembly in ignition key cylinder Below 1 V -
      Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

      Pulse generation

      (See waveform 1)
      K60-3 (ANT2) - K60-12 (GND) Input/Output W - W-B Transponder key amplifier communication signal No door control transmitter assembly in ignition key cylinder Below 1 V -
      Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

      Pulse generation

      (See waveform 2)
      K60-10 (EFII) - K60-12 (GND) Input LG - W-B ECM input signal Ignition switch off 11 to 14 V -
      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)
      K60-11 (EFIO) - K60-12 (GND) Output L - W-B ECM output signal Ignition switch off Below 1 V -
      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)

    5. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        B006ZEUN02
        Tester Connection K60-2 (ANT1) - K60-12 (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)

        B006WRWN02
        Tester Connection K60-3 (ANT2) - K60-12 (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)

        B006Y3UC02
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection K60-10 (EFII) - K60-12 (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)

        B006XASC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection K60-11 (EFIO) - K60-12 (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

  2. CHECK ECM (for 2AR-FE)

    B006X2FN01

    1. 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
      A22-45 (IMO) - C58-59 (E1) Output V - W-B Transponder key ECU assembly communication output Ignition switch off 11 to 14 V -
      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)

      		 -
      A22-28 (IMI) - C58-59 (E1) Input GR - W-B Transponder key ECU assembly communication input Ignition switch off Below 1 V -
      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)

      		 -

    2. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        B0070DVC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A22-45 (IMO) - C58-59 (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)

        B006XASC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A22-28 (IMI) - C58-59 (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

  3. CHECK ECM (for A25A-FKS)

    B006ZQXN03

    1. 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
      A24-25 (IMO) - A24-10 (E1) Output V - W-B Transponder key ECU assembly communication output Ignition switch off 11 to 14 V -
      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)

      		 -
      A24-26 (IMI) - A24-10 (E1) Input GR - W-B Transponder key ECU assembly communication input Ignition switch off Below 1 V -
      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)

      		 -

    2. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        B0070DVC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A24-25 (IMO) - A24-10 (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)

        B006XASC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection A24-26 (IMI) - A24-10 (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