IMMOBILISER SYSTEM TERMINALS OF ECU


  1. CHECK POWER SWITCH

    A01MH65E25

    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
      G2-6 (AGND) - Body ground - G - Body ground Transponder key amplifier ground Always Below 1 Ω -
      G2-7 (TXCT) - G2-6 (AGND) Input GR - G Immobiliser communication input Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      G2-8 (CODE) - G2-6 (AGND) Output R - G Immobiliser communication output Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V -
      G2-10 (VC5) - G2-6 (AGND) Input P - G Transponder key amplifier power supply Power 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
      G2-7 (TXCT) - G2-6 (AGND) Input GR - G

      Signal input from certification ECU (smart key ECU assembly)

      (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into power switch, and then transmitted by transponder key amplifier antenna as radio waves)

      		 Power switch off, key not in cabin, within 30 seconds after power 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
      G2-8 (CODE) - G2-6 (AGND) Output R - G

      Signal output to certification ECU (smart key ECU assembly)

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

      		 Power switch off, power switch pressed with key held near power switch*

      Pulse generation

      (See waveform 2)
      G2-10 (VC5) - G2-6 (AGND) Input P - G

      Transponder key amplifier power supply

      (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into power switch activated)

      		 Power switch off, key not in cabin, within 30 seconds after power 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. A01MG3SN18

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G2-7 (TXCT) - G2-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Power switch off, key not in cabin, within 30 seconds after power switch pressed
      2. A01MGPNE06

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G2-8 (CODE) - G2-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Power switch off, power switch pressed with key held near power switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A01MFQPN05

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G2-10 (VC5) - G2-6 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Power switch off, key not in cabin, within 30 seconds after power switch pressed

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01MGZVE33

    1. Disconnect the G41 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
      G41-10 (+B) - G41-11 (E) Input R - W-B +B power supply Power switch off 11 to 14 V -
      G41-11 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -

    3. Reconnect the G41 certification ECU (smart key ECU assembly) connector.

    4. Measure the voltage, 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
      G40-3 (IG1D) - G41-11 (E) Output LG - W-B IG signal Power switch off → on (IG) Below 1 V → 11 to 14 V -
      G41-14 (TXCT) - G41-12 (AGND) Output GR - G Signal output to transponder key amplifier Power 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
      G41-13 (CODE) - G41-12 (AGND) Input R - G Signal input from transponder key amplifier Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      G41-15 (VC5) - G41-12 (AGND) Output P - G Transponder key amplifier power supply Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      G41-12 (AGND) - Body ground - G - Body ground Transponder key amplifier ground Always Below 1 Ω
      G41-19 (IND) - G41-11 (E) Output G - W-B Security indicator output Power switch off → on (IG) Pulse generation → Below 2 V -

    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
      G41-14 (TXCT) - G41-12 (AGND) Output GR - G

      Signal output to transponder key amplifier

      (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into power switch, and then transmitted by transponder key amplifier antenna as radio waves)

      		 Power switch off, key not in cabin, within 30 seconds after power switch pressed

      Pulse generation

      (See waveform 1)

      • BCC Malfunction

      • Abnormal Status

      • Different Encrypt Code

      • Different Serial Number

      • Frame Error

      • Response
      G41-13 (CODE) - G41-12 (AGND) Input R - G

      Signal input from transponder key amplifier

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

      		 Power switch off, power switch pressed with key held near power switch*

      Pulse generation

      (See waveform 2)
      G41-15 (VC5) - G41-12 (AGND) Output P - G

      Transponder key amplifier power supply

      (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into power switch activated)

      		 Power switch off, key not in cabin, within 30 seconds after power switch pressed

      Pulse generation

      (See waveform 3)

      Tech Tips

      *: Remove the transmitter battery before performing this inspection.

    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. A01MG3SN19

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G41-14 (TXCT) - G41-12 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Power switch off, key not in cabin, within 30 seconds after power switch pressed
      2. A01MGPNE07

        Waveform 2 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G41-13 (CODE) - G41-12 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Power switch off, power switch pressed with key held near power switch*

        Tech Tips

        *: Remove the transmitter battery before performing this inspection.

      3. A01MFQPN06

        Waveform 3 (Reference)

        Measurement Condition
        Item Content
        Tester Connection G41-15 (VC5) - G41-12 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Power switch off, key not in cabin, within 30 seconds after power switch pressed

  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    A01MG5BE26

    1. Disconnect the G15 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
      G15-1 (+B) - Body ground Input R - Body ground +B power supply Power switch off 11 to 14 V B2789
      G15-5 (GND) - Body ground - BR - Body ground Ground Always Below 1 Ω B2789

    3. Reconnect the G15 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
      G15-3 (EFII) - G15-5 (GND) Input G - BR

      EFI communication input

      (Signal input from EV control ECU to ID code box (immobiliser code ECU))

      		 Power switch off 11 to 14 V

      • B2799

      • B279A

      • EV Code Receive

      • System Start Request
      G15-4 (EFIO) - G15-5 (GND) Output Y - BR

      EFI communication output

      (Signal output from ID code box (immobiliser code ECU) to EV control ECU)

      		 Power switch off 11 to 14 V
      G15-3 (EFII) - G15-5 (GND) Input G - BR

      EFI communication input

      (Signal input from EV control ECU to ID code box (immobiliser code ECU))

      		 Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)
      G15-4 (EFIO) - G15-5 (GND) Output Y - BR

      EFI communication output

      (Signal output from ID code box (immobiliser code ECU) to EV control ECU)

      		 Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary 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)

        A01MFUQC03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G15-3 (EFII) - G15-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      2. Waveform 2 (Reference)

        A01MJJCC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G15-4 (EFIO) - G15-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

  4. CHECK TRANSMISSION CONTROL ECU ASSEMBLY

    A01MFVNE20

    1. Disconnect the A25 and A26 transmission control ECU connectors.

    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
      A26-1 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      A26-5 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      A26-6 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      A25-16 (+B) - Body ground Input G - Body ground +B power supply Power switch off 11 to 14 V -
      A25-15 (BATT) - Body ground Input P - Body ground +B power supply Power switch off 11 to 14 V -

  5. CHECK EV CONTROL ECU

    A01MHF0E13

    1. Measure the voltage, 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
      G45-6 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      G46-23 (IMO) - G45-6 (E1) Output G - W-B ID code box (immobiliser code ECU) communication output Power switch off 11 to 14 V -
      G46-23 (IMO) - G45-6 (E1) Output G - W-B ID code box (immobiliser code ECU) communication output Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)

      		 -
      G46-22 (IMI) - G45-6 (E1) Input Y - W-B ID code box (immobiliser code ECU) communication input Power switch off 11 to 14 V -
      G46-22 (IMI) - G45-6 (E1) Input Y - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      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)

        A01MFUQC03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G46-23 (IMO) - G45-6 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      2. Waveform 2 (Reference)

        A01MJJCC02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G46-22 (IMI) - G45-6 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected