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


  1. CHECK ENGINE SWITCH

    A0029RHN29

    1. Measure the voltage and resistance 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
      F49-6 (AGND) - Body ground - W - Body ground Transponder key amplifier ground Always Below 1 Ω -
      F49-7 (TXCT) - F49-6 (AGND) Input L - W Immobiliser communication input Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      F49-8 (CODE) - F49-6 (AGND) Output G - W Immobiliser communication output Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      F49-10 (VC5) - F49-6 (AGND) Input B - W Transponder key amplifier power supply Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -

    2. 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
      F49-7 (TXCT) - F49-6 (AGND) Input L - W

      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 transponder key amplifier antenna as radio waves)

      		 Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

      Pulse generation

      (See waveform 1)

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      • Frame Error

      • Response

        Tech Tips

        If immobiliser key code verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
      F49-8 (CODE) - F49-6 (AGND) Output G - W

      Signal output to certification ECU (smart key ECU assembly)

      (Radio waves from transponder key amplifier built into engine switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))

      		 Engine switch off, engine switch pressed with key held near engine switch*

      Pulse generation

      (See waveform 2)
      F49-10 (VC5) - F49-6 (AGND) Input B - W

      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 in cabin, within 30 seconds after engine switch pressed

      Pulse generation

      (See waveform 3)

      Tech Tips

      *: Remove the transmitter battery before performing this inspection.

    3. 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. A002A6VN18

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F49-7 (TXCT) - F49-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed
      2. A002BWFN03

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F49-8 (CODE) - F49-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, engine switch pressed with key held near engine switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A002BAEN05

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F49-10 (VC5) - F49-6 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B003ZN2N27

    1. Disconnect the F13 certification ECU (smart key ECU assembly) connector.

    2. Measure the voltage and resistance 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
      F13-10 (+B) - F13-11 (E) Input GR- W-B +B power supply Always 11 to 14 V -
      F13-11 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -

    3. Reconnect the F13 certification ECU (smart key ECU assembly) connector.

    4. 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
      F10-3 (IG1D) - F13-11 (E) Output G - W-B Ignition power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V -
      F13-14 (TXCT) - F13-12 (AGND) Output L - W Signal output to transponder key amplifier Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      • Frame Error

      • Response
      F13-13 (CODE) - F13-12 (AGND) Input G - W Signal input from transponder key amplifier Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      F13-15 (VC5) - F13-12 (AGND) Output B- W Transponder key amplifier power supply Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      F13-12 (AGND) - Body ground - W - Body ground Transponder key amplifier ground Always Below 1 Ω
      F13-19 (IND) - F13-11 (E) Output GR - W-B Security indicator output Engine switch off → on (IG) Pulse generation → Below 2 V -
      F10-7 (EFII) - F13-11 (E)* Input W - W-B

      EFI communication input

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

      		 Engine switch off 11 to 14 V

      • B2799

      • B279A

      • EFI Code Receive

      • Engine Start Request
      F10-6 (EFIO) - F13-11 (E)* Output B - W-B

      EFI communication output

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

      		 Engine switch off 11 to 14 V

      • *: w/o Rear Seat Heater

    5. 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
      F13-14 (TXCT) - F13-12 (AGND) Output L - W

      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 transponder key amplifier antenna as radio waves)

      		 Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

      Pulse generation

      (See waveform 1)

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      • Frame Error

      • Response
      F13-13 (CODE) - F13-12 (AGND) Input G - W

      Signal input from transponder key amplifier

      (Radio waves from transponder key amplifier built into engine switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))

      Engine switch off, engine switch pressed with key held near engine switch

      Tech Tips

      Remove the transmitter battery before performing this inspection.

      Pulse generation

      (See waveform 2)
      F13-15 (VC5) - F13-12 (AGND) Output B - W

      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 in cabin, within 30 seconds after engine switch pressed

      Pulse generation

      (See waveform 3)
      F10-7 (EFII) - F13-11 (E)* Input W - W-B

      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)

      • B2799

      • B279A

      • EFI Code Receive

      • Engine Start Request
      F10-6 (EFIO) - F13-11 (E)* Output B - W-B

      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)

      • *: w/o Rear Seat Heater

    6. 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. A002A6VN19

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F13-14 (TXCT) - F13-12 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed
      2. A002BWFN04

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F13-13 (CODE) - F13-12 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, engine switch pressed with key held near engine switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A002BAEN06

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F13-15 (VC5) - F13-12 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

      4. Waveform 4 (Reference)

        A0027P4C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F10-7 (EFII) - F13-11 (E)*
        Tool Setting 2 V/DIV., 500 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

        • *: w/o Rear Seat Heater

      5. Waveform 5 (Reference)

        A002AS8C02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F10-6 (EFIO) - F13-11 (E)*
        Tool Setting 2 V/DIV., 500 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

        • *: w/o Rear Seat Heater

  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ Rear Seat Heater)

    A002ATBN31

    1. Disconnect the F67 ID code box (immobiliser code ECU) connector.

    2. Measure the voltage and resistance 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
      F67-1 (+B) - Body ground Input Y - Body ground +B power supply Always 11 to 14 V B2789
      F67-5 (GND) - Body ground - BR - Body ground Ground Always Below 1 Ω B2789

    3. Reconnect the F67 ID code box (immobiliser code ECU) 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
      F67-3 (EFII) - F67-5 (GND) Input P - BR

      EFI communication input

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

      		 Engine switch off 11 to 14 V

      • B2799

      • B279A

      • EFI Code Receive

      • Engine Start Request
      F67-4 (EFIO) - F67-5 (GND) Output B - BR

      EFI communication output

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

      		 Engine switch off 11 to 14 V
      F67-3 (EFII) - F67-5 (GND) Input P - 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)
      F67-4 (EFIO) - F67-5 (GND) Output B - 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. 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)

        A0027P4C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F67-3 (EFII) - F67-5 (GND)
        Tool Setting 2 V/DIV., 500 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)

        A002AS8C02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F67-4 (EFIO) - F67-5 (GND)
        Tool Setting 2 V/DIV., 500 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 ECU (STEERING LOCK ACTUATOR ASSEMBLY)

    A002BZJN52

    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
      F54-1 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F54-3 (IGE) - F54-1 (GND) Input V - W-B Steering lock motor operation permission signal (motor operation permission signal supplied by certification ECU (smart key ECU assembly))

      Steering lock motor operates when all conditions met, and then door opened:


      • Shift lever in P

      • Steering unlocked

      • Engine switch turned off

      Pulse generation

      (See waveform 1)

      • Power Supply Short

      • Unlock Request Receive

      • Lock Request Receive
      F54-4 (SLP1) - F54-1 (GND) Output LG - W-B Steering lock bar position signal (signal output from steering unlock sensor) Steering locked → unlocked* 11 to 14 V → Below 1.5 V Sensor Value
      F54-6 (IG2) - F54-1 (GND) Input R - W-B IG signal (IG2 power supply input for steering lock motor) Engine switch off → on (IG) Below 1 V → 11 to 14 V B2788
      F54-7 (B) - Body ground Input B - Body ground Constant power supply Always 11 to 14 V B2788

      Tech Tips

      *: The steering locks when any door is opened with the shift lever in P and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).

    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. A0027DSC03
        *a Steering lock motor not operating
        *b Steering lock motor operating

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F54-3 (IGE) - F54-1 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition

        Steering lock motor operates when both conditions met, and then door opened:


        • Shift lever in P

        • Electrical key transmitter sub-assembly carried, engine switch turned on (IG), steering unlocked, and then engine switch turned off

  5. CHECK ECM (for 1AR-FE)

    A0027PZN34

    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
      A43-3 (+B2) - C1-16 (E1) Input R - BR Ignition power supply Engine switch on (IG) 11 to 14 V -
      A43-2 (+B) - C1-16 (E1) Input G - BR Ignition power supply Engine switch on (IG) 11 to 14 V -
      A43-46 (MREL) - C1-50 (E01) Input B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A43-1 (BATT) - C1-16 (E1) Input GR - BR +B power supply Always 11 to 14 V -
      C1-50 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      C1-16 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      C1-49 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      C1-29 (+BM) - C1-16 (E1) Input R - BR +B power supply Always 11 to 14 V
      A43-29 (IMO) - C1-16 (E1) Output W - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication output Engine switch off 11 to 14 V -
      A43-29 (IMO) - C1-16 (E1) Output W - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication output 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)

      		 -
      A43-28 (IMI) - C1-16 (E1) Input B - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication input Engine switch off 11 to 14 V -
      A43-28 (IMI) - C1-16 (E1) Input B - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication input 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)

      		 -

      • *1: w/ Rear Seat Heater

      • *2: w/o Rear Seat Heater

    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)

        A0027P4C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A43-29 (IMO) - C1-16 (E1)
        Tool Setting 2 V/DIV., 500 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)

        A002AS8C02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A43-28 (IMI) - C1-16 (E1)
        Tool Setting 2 V/DIV., 500 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

  6. CHECK ECM (for 2GR-FE)

    A0027PZN35

    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
      A43-3 (+B2) - C1-49 (E1) Input R - BR Ignition power supply Engine switch on (IG) 11 to 14 V -
      A43-2 (+B) - C1-49 (E1) Input G - BR Ignition power supply Engine switch on (IG) 11 to 14 V -
      A43-46 (MREL) - C1-25 (E01) Input B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V -
      A43-1 (BATT) - C1-49 (E1) Input GR - BR +B power supply Always 11 to 14 V -
      C1-25 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      C1-49 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      C1-24 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      C1-60 (+BM) - C1-49 (E1) Input R - BR +B power supply Always 11 to 14 V
      A43-30 (IMO) - C1-49 (E1) Output W - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication output Engine switch off 11 to 14 V -
      A43-30 (IMO) - C1-49 (E1) Output W - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication output 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)

      		 -
      A43-31 (IMI) - C1-49 (E1) Input B - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication input Engine switch off 11 to 14 V -
      A43-31 (IMI) - C1-49 (E1) Input B - BR ID code box (immobiliser code ECU)*1 or certification ECU (smart key ECU assembly)*2 communication input 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)

      		 -

      • *1: w/ Rear Seat Heater

      • *2: w/o Rear Seat Heater

    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)

        A0027P4C03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A43-30 (IMO) - C1-49 (E1)
        Tool Setting 2 V/DIV., 500 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)

        A002AS8C02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A43-31 (IMI) - C1-49 (E1)
        Tool Setting 2 V/DIV., 500 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