ENGINE IMMOBILISER SYSTEM TERMINALS OF ECU


  1. CHECK POWER SWITCH


    1. Disconnect the E38 power switch connector.

      A003SYWE30

    2. Measure the resistance according to the value(s) in the table below.

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E38-8 (AGND) - Body ground BR - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the E38 power switch connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E38-9 (TXCT) - E38-8 (AGND) L - BR Key code output signal

      • Power switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      E38-9 (TXCT) - E38-8 (AGND) L - BR Key code output signal

      • Power switch off

      • Key not in cabin

      • Within 30 seconds of power switch pressed

      Pulse generation

      (See waveform 1)
      E38-10 (CODE) - E38-8 (AGND) P - BR Demodulated signal of key code data

      • Power switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      E38-10 (CODE) - E38-8 (AGND) P - BR Demodulated signal of key code data

      • Power switch off

      • Key battery removed

      • Power switch touched with key and pressed

      Pulse generation

      (See waveform 2)
      E38-14 (VC5) - E38-8 (AGND) SB - BR Power supply

      • Power switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      E38-14 (VC5) - E38-8 (AGND) SB - BR Power supply

      • Power switch off

      • Key not in cabin

      • Within 30 seconds of power switch pressed

      Pulse generation

      (See waveform 3)

      If the result is not as specified, the power switch may have a malfunction.

    5. Inspect using an oscilloscope.


      1. A003RK4E01

        Waveform 1 (Reference)

        Item Content
        Tester Connection E38-9 (TXCT) - E38-8 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Power switch off

        • Key not in cabin

        • Within 30 seconds of power switch pressed
      2. A003S6UE01

        Waveform 2 (Reference)

        Item Content
        Tester Connection E38-10 (CODE) - E38-8 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Power switch off

        • Key battery removed

        • Power switch touched with key and pressed
      3. A003TNFE01

        Waveform 3 (Reference)

        Item Content
        Tester Connection E38-14 (VC5) - E38-8 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition

        • Power switch off

        • Key not in cabin

        • Within 30 seconds of power switch pressed

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Disconnect the E117 certification ECU (smart key ECU assembly) connector.

      A003UJME56

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E117-1 (+B) - E117-17 (E) W - W-B +B power supply Power switch off 11 to 14 V
      E117-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the E117 certification ECU (smart key ECU assembly) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E117-2 (IND) - Body ground Y - Body ground Security indicator light signal

      • Power switch on (IG)

      • Security indicator light off

      		 Below 2 V
      E117-2 (IND) - Body ground Y - Body ground Security indicator light signal

      • Power switch off

      • Security indicator light blinks

      		 Pulse generation
      E117-8 (TXCT) - E117-40 (AGND) L - BR Power switch TXCT output

      • Power switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      E117-8 (TXCT) - E117-40 (AGND) L - BR Power switch TXCT output

      • Power switch off

      • Key not in cabin

      • Within 30 seconds of power switch pressed

      		 Pulse generation (See waveform 1)
      E117-9 (CODE) - E117-40 (AGND) P - BR Power switch CODE input

      • Power switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      E117-9 (CODE) - E117-40 (AGND) P - BR Power switch CODE input

      • Power switch off

      • Key battery removed

      • Power switch touched with key and pressed

      		 Pulse generation (See waveform 2)
      E117-18 (IG) - E117-17 (E) B - W-B IG power supply Power switch off Below 1 V
      E117-18 (IG) - E117-17 (E) B - W-B IG power supply Power switch on (IG) 11 to 14 V
      E117-30 (VC5) - E117-40 (AGND) SB - BR Power switch power supply

      • Power switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      E117-30 (VC5) - E117-40 (AGND) SB - BR Power switch power supply

      • Power switch off

      • Key not in cabin

      • Within 30 seconds of power switch pressed

      		 Pulse generation (See waveform 3)
      E117-40 (AGND) - Body ground BR - Body ground Power switch ground Always Below 1 Ω

      If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

    5. Inspect using an oscilloscope.


      1. A003RK4E01

        Waveform 1 (Reference)

        Item Content
        Tester Connection E117-8 (TXCT) - E117-40 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Power switch off

        • Key not in cabin

        • Within 30 seconds of power switch pressed
      2. A003S6UE01

        Waveform 2 (Reference)

        Item Content
        Tester Connection E117-9 (CODE) - E117-40 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Power switch off

        • Key battery removed

        • Power switch touched with key and pressed
      3. A003TNFE01

        Waveform 3 (Reference)

        Item Content
        Tester Connection E117-30 (VC5) - E117-40 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition

        • Power switch off

        • Key not in cabin

        • Within 30 seconds of power switch pressed

  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU)


    1. Disconnect the E22 ID code box (immobiliser code ECU) connector.

      A003RIOE34

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E22-1 (+B) - E22-8 (GND) B - W-B +B power supply Power switch off 11 to 14 V
      E22-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the E22 ID code box (immobiliser code ECU) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E22-5 (EFII) - E22-8 (GND) L - W-B Power management control ECU (HV CPU) output signal Power switch off 11 to 14 V
      E22-5 (EFII) - E22-8 (GND) L - W-B Power management control ECU (HV CPU) output signal Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected

      Pulse generation

      (See waveform 1)
      E22-6 (EFIO) - E22-8 (GND) R - W-B Power management control ECU (HV CPU) input signal Power switch off 11 to 14 V
      E22-6 (EFIO) - E22-8 (GND) R - W-B Power management control ECU (HV CPU) input signal Power switch on (IG)

      Pulse generation

      (See waveform 2)

      • If the result is not as specified, the ID code box (immobiliser code ECU) may have a malfunction.

    5. Inspect using an oscilloscope.


      1. A003UYUE01

        Waveform 1 (Reference)

        Item Content
        Tester Connection E22-5 (EFII) - E22-8 (GND)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected
      2. A003TJDE01

        Waveform 2 (Reference)

        Item Content
        Tester Connection E22-6 (EFIO) - E22-8 (GND)
        Tool Setting 5 V/DIV., 50 ms./DIV.
        Condition Power switch on (IG)

  4. CHECK TRANSMISSION CONTROL ECU ASSEMBLY


    1. Disconnect the A96 and A97 transmission control ECU assembly connectors.

      A003SBUE05

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

      Tech Tips

      Measure the values on the wire harness side with the connectors disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A96-15 (BATT) - Body ground B - Body ground Battery power supply Power switch off 11 to 14 V
      A97-1 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      A97-5 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A97-6 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

  5. CHECK POWER MANAGEMENT CONTROL ECU (HV CPU)


    1. Disconnect the E111 power management control ECU (HV CPU) connector.

      A003SPPE03

    2. Measure the resistance according to the value(s) in the table below.

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E111-6 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the E111 power management control ECU (HV CPU) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E112-20 (IMO) - E111-6 (E1) L - BR ID code box (immobiliser code ECU) input signal Power switch off 11 to 14 V
      E112-20 (IMO) - E111-6 (E1) L - BR ID code box (immobiliser code ECU) input signal Within 3 seconds of power switch on (READY), or within 3 seconds of power switch first turned on (IG) after battery disconnected and connected

      Pulse generation

      (See waveform 1)
      E112-21 (IMI) - E111-6 (E1) R - BR ID code box (immobiliser code ECU) output signal Power switch off 11 to 14 V
      E112-21 (IMI) - E111-6 (E1) R - BR ID code box (immobiliser code ECU) output signal Power switch on (IG)

      Pulse generation

      (See waveform 2)

      If the result is not as specified, the power management control ECU (HV CPU) may have a malfunction.

    5. Waveform:


      1. A003UYUE01

        Waveform 1 (Reference)

        Item Content
        Tester Connection E112-20 (IMO) - E111-6 (E1)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected
      2. A003TJDE01

        Waveform 2 (Reference)

        Item Content
        Tester Connection E112-21 (IMI) - E111-6 (E1)
        Tool Setting 5 V/DIV., 50 ms./DIV.
        Condition Power switch on (IG)