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


  1. CHECK ENGINE SWITCH

    A005P3PE31

    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
      F59-6 (AGND) - Body ground - P - Body ground Transponder key amplifier ground Always Below 1 Ω -
      F59-7 (TXCT) - F59-6 (AGND) Input B - P Immobiliser communication input Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more after driver door opened and then closed Below 1 V -
      F59-8 (CODE) - F59-6 (AGND) Output L - P Immobiliser communication output Engine switch off,brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more after driver door opened and then closed Below 1 V -
      F59-10 (VC5) - F59-6 (AGND) Input Y - P Transponder key amplifier power supply Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more after driver door opened and then closed Below 1 V -

      • *1: for CVT

      • *2: for Manual Transaxle

    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
      F59-7 (TXCT) - F59-6 (AGND) Input B - P

      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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of 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
      F59-8 (CODE) - F59-6 (AGND) Output L - P

      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 electrical key transmitter sub-assembly held near engine switch*

      Pulse generation

      (See waveform 2)
      F59-10 (VC5) - F59-6 (AGND) Input Y - P

      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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of 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. A005PZTN18

        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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed
      2. A005Q81C01
        *a Waveform
        *b Waveform (detail)

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F59-8 (CODE) - F59-6 (AGND)
        Tool Setting

        • Waveform

          1 V/DIV., 20 ms./DIV.

        • Waveform (detail)

          2 V/DIV., 100 μs./DIV.
        Condition Engine switch off, engine switch pressed with electrical key transmitter sub-assembly held near engine switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A005OBHN05

        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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A005PHVE08

    1. Disconnect the F1 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
      F1-4 (+B) - F1-18 (E) Input L - W-B +B power supply Always 11 to 14 V -
      F1-18 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -

    3. Reconnect the F1 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
      F1-17 (IG1D) - F1-18 (E) Output GR - W-B Ignition power supply Engine switch off Below 1 V -
      Engine switch on (IG) 11 to 14 V -
      F1-5 (TXCT) - F1-11 (AGND) Output B - P Signal output to transponder key amplifier Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more after driver door opened and then closed Below 1 V

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      • Frame Error

      • Response
      F1-6 (CODE) - F1-11 (AGND) Input L - P Signal input from transponder key amplifier Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more after driver door opened and then closed Below 1 V
      F1-7 (VC5) - F1-11 (AGND) Output Y - P Transponder key amplifier power supply Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more after driver door opened and then closed Below 1 V
      F1-11 (AGND) - Body ground - P - Body ground Transponder key amplifier ground Always Below 1 Ω
      F1-20 (IND) - F1-18 (E) Output P - W-B Security indicator output Engine switch off → on (IG) Pulse generation → Below 2 V -

      • *1: for CVT

      • *2: for Manual Transaxle

    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
      F1-5 (TXCT) - F1-11 (AGND) Output B - P

      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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

      Pulse generation

      (See waveform 1)

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      • Frame Error

      • Response
      F1-6 (CODE) - F1-11 (AGND) Input L - P

      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 electrical key transmitter sub-assembly held near engine switch

      Tech Tips

      Remove the transmitter battery before performing this inspection.

      Pulse generation

      (See waveform 2)
      F1-7 (VC5) - F1-11 (AGND) Output Y - P

      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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

      Pulse generation

      (See waveform 3)

    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. A005PZTN19

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F1-5 (TXCT) - F1-11 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed
      2. A005Q81C01
        *a Waveform
        *b Waveform (detail)

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F1-6 (CODE) - F1-11 (AGND)
        Tool Setting

        • Waveform

          1 V/DIV., 20 ms./DIV.

        • Waveform (detail)

          2 V/DIV., 100 μs./DIV.
        Condition Engine switch off, engine switch pressed with electrical key transmitter sub-assembly held near engine switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A005OBHN06

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection F1-7 (VC5) - F1-11 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    A005P6EE31

    1. Disconnect the F21 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
      F21-1 (+B) - Body ground Input W - Body ground +B power supply Always 11 to 14 V B2789
      F21-5 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω B2789

    3. Reconnect the F21 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
      F21-3 (EFII) - F21-5 (GND) Input G - W-B

      EFI communication input

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

      		 Engine switch off 11 to 14 V

      • B279986*1

      • B2799*2

      • B279A12*1

      • B279A*2

      • EFI Code Receive

      • Engine Start Request
      F21-4 (EFIO) - F21-5 (GND) Output R - W-B

      EFI communication output

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

      		 Engine switch off 11 to 14 V → Below 1 V
      F21-3 (EFII) - F21-5 (GND) Input G - W-B

      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 cable disconnected and reconnected to battery

      Pulse generation

      (See waveform 1)
      F21-4 (EFIO) - F21-5 (GND) Output R - W-B

      EFI communication output

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

      		 Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

      Pulse generation

      (See waveform 2)

      • *1: for 8NR-FTS

      • *2: for 3ZR-FAE

    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)

        A005ONKC03
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection F21-3 (EFII) - F21-5 (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 cable disconnected and reconnected to battery

      2. Waveform 2 (Reference)

        A005OBVC02
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection F21-4 (EFIO) - F21-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

  4. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

    A005P3NC34

    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
      F78-1 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F78-3 (IGE) - F78-1 (GND) Input P - W-B Steering lock motor operation permission signal (motor operation permission signal supplied by certification ECU (smart key ECU assembly))

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


      • Shift lever in P*1

      • Steering unlocked

      • Engine switch turned off

      Pulse generation

      (See waveform 1)

      • Power Supply Short

      • Unlock Request Receive

      • Lock Request Receive
      F78-4 (SLP1) - F78-1 (GND) Output G - 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
      F78-6 (IG2) - F78-1 (GND) Input B - W-B IG signal (IG2 power supply input for steering lock motor) Engine switch off Below 1 V B2788
      Engine switch on (IG) 11 to 14 V
      F78-7 (B) - Body ground Input L - 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*1 and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).


      • *1: for CVT

    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. A005PO3C03
        *a Steering lock motor not operating
        *b Steering lock motor operating

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection

        • F78-3 (IGE) - F78-1 (GND)

        • F78-3 (IGE) - F78-1 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition

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


        • Shift lever in P*1

        • Steering unlocked

        • Engine switch turned off

        • *1: for CVT

  5. CHECK ECM

    A005Q9GC01
    *A for 8NR-FTS *B for 3ZR-FAE

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

      for 8NR-FTS
      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 Engine 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 engine switch turned on (IG) 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 Engine switch off 11 to 14 V → Below 1 V -
      A38-28 (IMI) - C62-53 (E1) Input BE - W-B ID code box (immobiliser code ECU) communication input Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

      Pulse generation

      (See waveform 2)

      		 -
      for 3ZR-FAE
      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 Engine 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 engine switch turned on (IG) 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 Engine switch off 11 to 14 V → Below 1 V -
      A38-28 (IMI) - C63-59 (E1) Input BE - W-B ID code box (immobiliser code ECU) communication input Engine switch turned on (IG) 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 engine switch turned on (IG) 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 Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

        • *1: for 8NR-FTS

        • *2: for 3ZR-FAE