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


  1. CHECK ENGINE SWITCH

    A005KN7E02

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

      Inspection with Engine Switch Off
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      F59-6 (AGND) - Body ground - B - Body ground Ground Always Below 1 Ω -
      F59-7 (TXCT) - F59-6 (AGND) Input BE - B Immobiliser communication input Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, and 30 seconds or more after driver door opened and then closed Below 1 V -
      F59-8 (CODE) - F59-6 (AGND) Output SB - B Immobiliser communication output Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, and 30 seconds or more after driver door opened and then closed Below 1 V -
      F59-10 (VC5) - F59-6 (AGND) Input W - B Transponder key amplifier power supply Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, and 30 seconds or more after driver door opened and then closed Below 1 V -

      • *1: for CVT or Multi-mode Manual Transaxle

      • *2: for Manual Transaxle

      Inspection of Waveforms of Communication Signals between Engine Switch and Certification ECU (Smart Key ECU Assembly)
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      F59-7 (TXCT) - F59-6 (AGND) Input BE - B

      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 antenna of transponder key amplifier as electric waves)

      		 Engine switch off, key not inside vehicle, and within 30 seconds after engine switch pushed

      Pulse generation

      (See waveform 1)

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      (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)
      F59-8 (CODE) - F59-6 (AGND) Output SB - B

      Signal output to certification ECU (smart key ECU assembly)

      [Electric waves from transponder key amplifier built into engine switch used to detect electrical key transmitter information. Information then sent to certification ECU (smart key ECU assembly)].

      		 Engine switch off, and engine switch pushed while key held against engine switch*

      Pulse generation

      (See waveform 2)
      F59-10 (VC5) - F59-6 (AGND) Input W - B

      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 inside vehicle, and within 30 seconds after engine switch pushed

      Pulse generation

      (See waveform 3)

      Tech Tips

      *: Remove the transmitter battery before performing this inspection.

    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. A005LNOE30

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F59-7 (TXCT) - F59-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, key not inside vehicle, and within 30 seconds after engine switch pushed
      2. A005JH9E20

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F59-8 (CODE) - F59-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, and engine switch pushed while key held against engine switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A005KVZE01

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F59-10 (VC5) - F59-6 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, key not inside vehicle, and within 30 seconds after engine switch pushed

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A005LM7E02

    1. Disconnect the F65 certification ECU (smart key ECU assembly) connector.

    2. 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
      F65-2 (+B) - F65-11 (E) Input W - BR +B power supply Always 11 to 14 V -
      F65-10 (CUTB) - F65-11 (E) Input Y - BR Dark current cut pin* Always 11 to 14 V -
      F65-11 (E) - Body ground - BR - Body ground Ground Always Below 1 Ω -

      • *: In order to prevent the battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse between the battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of electric waves every 250 ms. that form the detection area stops).

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

    3. Reconnect the F65 certification ECU (smart key ECU assembly) connector.

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

      Inspection with Engine Switch Off
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      F63-18 (IND) - F65-11 (E) Output SB - BR Security indicator output Engine switch off → on (IG)

      Pulse generation

      → Below 2 V

      		 -
      F63-9 (TXCT) - F63-24 (AGND) Output BE - B Signal output to transponder key amplifier Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, and 30 seconds or more after driver door opened and then closed Below 1 V

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number
      F63-7 (CODE) - F63-24 (AGND) Input SB - B Signal input from transponder key amplifier Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, and 30 seconds or more after driver door opened and then closed Below 1 V
      F63-5 (IG) - F65-11 (E) Input P - BR Engine switch power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V Ignition Switch
      F63-1 (VC5) - F63-24 (AGND) Output W - B Transponder key amplifier power supply Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, and 30 seconds or more after driver door opened and then closed Below 1 V

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number
      F63-24 (AGND) - Body ground - B - Body ground Transponder key amplifier ground Always Below 1 Ω

      • *1: for CVT or Multi-mode Manual Transaxle

      • *2: for Manual Transaxle

      Inspection of Waveforms of Communication Signals between Engine Switch and Certification ECU (Smart Key ECU Assembly)
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      F63-9 (TXCT) - F63-24 (AGND) Output BE - B

      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 antenna of transponder key amplifier as electric waves]

      		 Engine switch off, key not inside vehicle, and within 30 seconds after engine switch pushed

      Pulse generation

      (See waveform 1)

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number
      F63-7 (CODE) - F63-24 (AGND) Input SB - B

      Signal input from transponder key amplifier

      [Electric waves from transponder key amplifier built into engine switch used to detect electrical key transmitter information. Information then sent to certification ECU (smart key ECU assembly)].

      		 Engine switch off, and engine switch pushed while key held against engine switch*

      Pulse generation

      (See waveform 2)
      F63-1 (VC5) - F63-24 (AGND) Output W - B

      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 inside vehicle, and within 30 seconds after engine switch pushed

      Pulse generation

      (See waveform 3)

      Tech Tips

      *: Remove the transmitter battery before performing this inspection.

      Inspection Communication Signals between Engine Switch and Certification ECU (Smart Key ECU Assembly) (for 1NZ-FE)
      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC
      F65-14 (EFII) - F65-11 (E) 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
      Input LG - BR

      EFI communication input

      (Signal input from ECM to certification ECU (smart key ECU assembly)

      		 Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      Pulse generation

      (See waveform 4)
      F65-13 (EFIO) - F65-11 (E) Output R - BR

      EFI communication output

      (Signal output from certification ECU (smart key ECU assembly) to ECM)

      		 Engine switch off 11 to 14 V
      Output R - BR

      EFI communication output

      (Signal output from certification ECU (smart key ECU assembly) to ECM)

      		 Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      Pulse generation

      (See waveform 5)

    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. A005LNOE30

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F63-9 (TXCT) - F63-24 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, key not inside vehicle, and within 30 seconds after engine switch pushed
      2. A005JH9E20

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F63-7 (CODE) - F63-24 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, and engine switch pushed while key held against engine switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A005KVZE01

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F63-1 (VC5) - F63-24 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, key not inside vehicle, and within 30 seconds after engine switch pushed

      4. Waveform 4(Reference)

        A005HLJE01
        Text in Illustration
        *A for 1ND-TV *B except 1ND-TV
        *a Approximately 160 ms *b Approximately 510 ms
        *c Approximately 270 ms - -
        Measurement Condition
        Item Content
        Tester Connection F65-14 (EFII) - F65-11 (E)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      5. Waveform 5(Reference)

        A005KZHE01
        Text in Illustration
        *A for 1ND-TV *B except 1ND-TV
        *a Approximately 160 ms *b Approximately 510 ms
        *c Approximately 270 ms - -
        Measurement Condition
        Item Content
        Tester Connection F65-13 (EFIO) - F65-11 (E)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    A005LKLE02

    1. Disconnect the F60 ID code box (immobiliser code ECU) connector.

    2. 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
      F60-1 (+B) - F60-5 (GND) Input BE - BR +B power supply Always 11 to 14 V B2789
      F60-5 (GND) - Body ground - BR - 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 F60 ID code box (immobiliser code ECU) connector.

    4. Measure the 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
      F60-3 (EFII) - F60-5 (GND) Input LG - BR

      EFI communication input

      (Signal input from ECM to ID code box [immobiliser code ECU])

      		 Engine switch off 11 to 14 V

      • B2799

      • B279A

      • Engine Start Request

      • EFI Code Receive
      Input LG - BR

      EFI communication input

      (Signal input from ECM to ID code box [immobiliser code ECU])

      		 Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)
      F60-4 (EFIO) - F60-5 (GND) Output R - BR

      EFI communication output

      (Signal output from ID code box [immobiliser code ECU] to ECM)

      		 Engine switch off 11 to 14 V
      Output R - BR

      EFI communication output

      (Signal output from ID code box [immobiliser code ECU] to ECM)

      		 Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      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)

        A005HLJE01
        Text in Illustration
        *A for 1ND-TV *B for 1NR-FE
        *a Approximately 160 ms *b Approximately 510 ms
        *c Approximately 270 ms - -
        Measurement Condition
        Item Content
        Tester Connection F60-3 (EFII) - F60-5 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      2. Waveform 2 (Reference)

        A005KZHE01
        Text in Illustration
        *A for 1ND-TV *B for 1NR-FE
        *a Approximately 160 ms *b Approximately 510 ms
        *c Approximately 270 ms - -
        Measurement Condition
        Item Content
        Tester Connection F60-4 (EFIO) - F60-5 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

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

    A005HFVE02

    1. Measure the 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
      F61-1 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F61-3 (IGE) - Body ground Input L - Body ground Steering lock motor operation permission signal (motor operation permission signal supplied by power source control ECU)

      When all of the following conditions are met:


      • Shift lever in P*1

      • Shift lever in N*2

      • Steering lock unlocked

      • Engine switch off

      • Driver side door close to open

      		 11 to 14 V (Steering lock motor not operating) → Below 1 V (Steering lock motor operating)

      • Power Supply Short

      • Unlock Request Receive

      • Lock Request Receive
      F61-4 (SLP1) - Body ground Output P - Body ground Steering lock bar position signal (signal output from steering unlock sensor) Steering locked → unlocked*3 11 to 14 V → Below 1.2 V

      • Push Start Error

      • Sensor Value
      F61-6 (IG2) - Body ground Input SB - Body ground IG signal (IG2 power supply input for steering lock motor) Engine switch off → on (IG) Below 1 V → 11 to 14 V

      • B2788*4

      • Ignition Switch
      F61-7 (B) - Body ground Input GR - Body ground Constant power supply Always 11 to 14 V B2788*4

      • *1: for CVT

      • *2: for Multi-mode Manual Transaxle

      Tech Tips


      • *3: The steering locks when any door is opened with the shift lever in P (for CVT) or N (for Multi-Mode Manual Transaxle) and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).

      • *4: This DTC indicates an IG2 input malfunction. If the power source mode recognized by the certification ECU (smart key ECU assembly) and the power source mode recognized by the steering lock actuator assembly (steering lock ECU) do not match, this DTC is stored.