BLOCKING SYSTEM TERMINALS OF ECU


  1. CHECK TELEPHONE TRANSCEIVER ASSEMBLY

    A01GJFRE24

    1. Disconnect the L180 telephone transceiver assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L180-6 (IG2) - L180-9 (E) R - W-B Ignition power supply Engine switch on (IG) 9 to 16 V
      L180-12 (+B) - L180-9 (E) W - W-B +B power supply Always 9 to 16 V
      L180-9 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the L180 telephone transceiver assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L180-1 (BLK1) - L180-9 (E) Y - W-B ID code box (immobiliser code ECU) communication input Engine switch off 11 to 14 V
      L180-1 (BLK1) - L180-9 (E) Y - W-B ID code box (immobiliser code ECU) 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 1)
      L180-2 (BLK4) - L180-9 (E) GR - W-B ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V
      L180-2 (BLK4) - L180-9 (E) 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 battery cable disconnected and reconnected

      Pulse generation

      (See waveform 2)
      L180-7 (BLK2) - L180-9 (E) B - W-B ECM communication output Engine switch off Below 1 V
      L180-7 (BLK2) - L180-9 (E) B - W-B ECM 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)
      L180-8 (BLK3) - L180-9 (E) G - W-B ECM communication input Engine switch off Below 1 V
      L180-8 (BLK3) - L180-9 (E) G - W-B ECM 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)

    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)

        A01GIK6E01
        Text in Illustration
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection

        • L180-1 (BLK1) - L180-9 (E)

        • L180-7 (BLK2) - L180-9 (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

      2. Waveform 2 (Reference)

        A01GNJGE01
        Text in Illustration
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection

        • L180-2 (BLK4) - L180-9 (E)

        • L180-8 (BLK3) - L180-9 (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

  2. CHECK ID CODE BOX (IMMOBILISER CODE ECU)


    1. Disconnect the L32 ID code box (immobiliser code ECU) connector.

      A01GL4EE46

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L32-1 (+B) - L32-8 (GND) L - W-B +B power supply Always 11 to 14 V
      L32-8 (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 L32 ID code box (immobiliser code ECU) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L32-5 (EFII) - L32-8 (GND) Y - W-B ECM input signal Engine switch off 11 to 14 V
      L32-5 (EFII) - L32-8 (GND) Y - W-B ECM input signal Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected

      Pulse generation

      (See waveform 1)
      L32-6 (EFIO) - L32-8 (GND) GR - W-B ECM output signal Engine switch off Below 1 V
      L32-6 (EFIO) - L32-8 (GND) GR - W-B ECM output signal Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected

      Pulse generation

      (See waveform 2)

    5. Inspect using an oscilloscope.


      1. Waveform 1 (Reference)

        A01GIK6E01
        Text in Illustration
        *a Approximately 160 ms. *b Approximately 270 ms.
        Item Content
        Tester Connection L32-5 (EFII) - L32-8 (GND)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected

      2. Waveform 2 (Reference)

        A01GNJGE01
        Text in Illustration
        *a Approximately 160 ms. *b Approximately 270 ms.
        Item Content
        Tester Connection L32-6 (EFIO) - L32-8 (GND)
        Tool Setting 10 V/DIV., 100 ms./DIV.
        Condition Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected

  3. CHECK ECM

    A01GJ8HE26

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      E3-1 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E2-2 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E2-1 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A13-5 (E03) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E3-4 (E04) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A14-1 (EC) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E2-5 (ME01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A14-7 (BATT) - E3-1 (E1) B - W-B Battery (for measuring battery voltage and for ECM memory) Always 9 to 14 V
      A13-2 (+B) - E3-1 (E1) B - W-B Power source of ECM Engine switch off Below 1 V
      Engine switch on (IG) 9 to 14 V
      A13-1 (+B2) - E3-7 (E1) B - W-B Power source of ECM Engine switch off Below 1 V
      Engine switch on (IG) 9 to 14 V
      A13-31 (IMI) - E3-1 (E1) L - W-B ID code box input signal Engine switch off Below 1 V
      Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected Pulse generation (See waveform 1)
      A13-30 (IMO) - E3-1 (E1) B - W-B ID code box output signal Engine switch off Below 1 V
      Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected Pulse generation (See waveform 2)

    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. Waveform 1 (Reference)

        A01GIK6E01
        Text in Illustration
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection A13-30 (IMO) - E3-1 (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)

        A01GNJGE01
        Text in Illustration
        *a Approximately 160 ms. *b Approximately 270 ms.
        Measurement Condition
        Item Content
        Tester Connection A13-31 (IMI) - E3-1 (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