ENGINE IMMOBILISER SYSTEM TERMINALS OF ECU


  1. CHECK ENGINE SWITCH

    A001C6ME02

    1. Disconnect the L36 switch connector.

    2. Measure the resistance of the wire harness.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L36-5 (GND) - Body ground W - 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 L36 switch connector.

    4. Measure the resistance and voltage of the connector.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L36-8 (AGND) - Body ground L - Body ground Ground Always Below 1 Ω
      L36-14 (VC5) - L36-8 (AGND) V - L Power supply Key is not in cabin Below 1 V
      Press engine switch* 4.6 to 5.4 V
      L36-10 (CODE) - L36-8 (AGND) W - L Demodulated signal of key code data Key is not in cabin Below 1 V
      Press engine switch and hold key close to engine switch* Pulse generation (see waveform 1)
      L36-9 (TXCT) - L36-8 (AGND) BE - L Key code output signal Key is not in cabin Below 1 V
      Press engine switch and hold key close to engine switch* Pulse generation (see waveform 2)

      Tech Tips

      *: Remove the key's battery before performing this inspection.

    5. A0019VRE01
      *1 Waveform 1:

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) L36-10 (CODE) - L36-8 (AGND)
      Tool Setting 2 V/DIV., 20 msec./DIV.
      Condition Press engine switch and hold key close to engine switch*

      Tech Tips

      *: Remove the key's battery before performing this inspection.

    6. A001EADE01
      *1 Waveform 2:

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) L36-9 (TXCT) - L36-8 (AGND)
      Tool Setting 2 V/DIV., 20 msec./DIV.
      Condition Press engine switch and hold key close to engine switch*

      Tech Tips

      *: Remove the key's battery before performing this inspection.

  2. CHECK CERTIFICATION ECU

    A001C1WE06

    1. Disconnect the L15 ECU connector.

    2. Measure the resistance and voltage of the wire harness side connector.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L15-1 (+B1) - L15-17 (E) L - W-B +B power supply Always 11 to 14 V
      L15-18 (IG) - L15-17 (E) L - W-B Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V

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

    3. Reconnect the L15 ECU connector.

    4. Measure the resistance and voltage of the connector.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-40 (AGND) - Body ground L - Body ground engine switch ground Always Below 1 Ω
      L15-30 (VC5) - L15-40 (AGND) V - L Engine switch power supply Key is not in cabin Below 1 V
      Press engine switch* 4.6 to 5.4 V
      L15-9 (CODE) - L15-40 (AGND) W - L Engine switch CODE input Key is not in cabin Below 1 V
      Press engine switch and hold key close to engine switch* Pulse generation (see waveform 1)
      L15-8 (TXCT) - L15-40 ()AGND BE - L Engine switch TX output Key is not in cabin Below 1 V
      Press engine switch and hold key close to engine switch* Pulse generation (see waveform 2)

      Tech Tips

      *: Remove the key's battery before performing this inspection.

    5. A0019VRE01
      *1 Waveform 1:

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) L15-9 (CODE) - L15-40 (AGND)
      Tool Setting 2 V/DIV., 20 msec./DIV.
      Condition Press engine switch and hold key close to engine switch*

      Tech Tips

      *: Remove the key's battery before performing this inspection.

    6. A001EADE01
      *1 Waveform 2:

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) L15-8 (TXCT) - L15-40 (AGND)
      Tool Setting 2 V/DIV., 20 msec./DIV.
      Condition Press engine switch and hold key close to engine switch*

      Tech Tips

      *: Remove the key's battery before performing this inspection.

  3. CHECK ID CODE BOX

    A001F2TE03

    1. Disconnect the L32 ECU connector.

    2. Measure the resistance and voltage of the wire harness side connector.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L32-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L32-1 (+B) - L32-8 (GND) L - W-B +B power supply Always 11 to 14 V

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

    3. Reconnect the L32 ECU connector.

    4. Measure the voltage of the connector.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L32-5 (EFII) - L32-8 (GND)

      B - W-B*1

      Y - W-B*2

      ECM input signal*1

      Telephone transceiver input signal*2

      		 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)
      L32-6 (EFIO) - L32-8 (GND)

      L - W-B*1

      GR - W-B*2

      ECM output signal*1

      Telephone transceiver output signal*2

      		 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)

      Tech Tips

      *1: w/o Blocking System

      *2: w/ Blocking System

    5. A0019TOE01
      *1 Waveform 1:

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) L32-5 (EFII) - L32-8 (GND)
      Tool Setting 10 V/DIV., 100 msec./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
    6. A001DKIE01
      *1 Waveform 2:

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) L32-6 (EFIO) - L32-8 (GND)
      Tool Setting 10 V/DIV., 100 msec./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

  4. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

    A001E4QE14

    1. Disconnect the DA and DF ECU connectors.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      DA-40 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DA-41 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DF-1 (ACC) - GND2 (DA-40) B - W-B ACC power supply Engine switch off Below 1 V
      Engine switch on (ACC) 11 to 14 V
      DF-1 (IG) - DA-40 (GND2) B - W-B IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V

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

  5. CHECK STEERING LOCK ACTUATOR (STEERING LOCK ECU)

    A001FKRE04

    1. Disconnect the L33 ECU connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L33-2 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
      L33-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L33-7 (B) - Body ground P - Body ground +B power supply Always 11 to 14 V
      L33-6 (IG2) - Body ground L - Body ground Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V

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

  6. CHECK ECM (for 1UR-FSE)

    A001ELBE02

    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*1 - W-B

      B*2 - 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*1 - W-B

      B*2 - 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)

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. A001DKIE02
      *1 Waveform 1:

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) A13-31 (IMI) - E3-1 (E1)
      Tool Setting 10 V/DIV., 100 msec./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. A0019TOE02
      *1 Waveform 2:

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) A13-30 (IMO) - E3-1 (E1)
      Tool Setting 10 V/DIV., 100 msec./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

  7. CHECK ECM (for 1UR-FE)

    A001ELBE02

    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*1

      Telephone transceiver input signal*2

      		 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*1

      Telephone transceiver output signal*2

      		 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)

      Tech Tips

      *1: w/o Blocking System

      *2: w/ Blocking System

    2. A001DKIE02
      *1 Waveform 1:

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols) A13-31 (IMI) - E3-1 (E1)
      Tool Setting 10 V/DIV., 100 msec./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. A0019TOE02
      *1 Waveform 2:

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols) A13-30 (IMO) - E3-1 (E1)
      Tool Setting 10 V/DIV., 100 msec./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

  8. CHECK TELEPHONE TRANSCEIVER ASSEMBLY (w/ Blocking System)

    A001AWWE02

    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
      Engine switch off Below 1 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. A0019TOE01
      *1 Waveform 1:

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference):
      Item Content
      Terminal No. (Symbols)

      • L180-1 (BLK1) - L180-9 (E)

      • L180-7 (BLK2) - L180-9 (E)
      Tool Setting 10 V/DIV., 100 msec./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. A001DKIE01
      *1 Waveform 2:

      Using an oscilloscope, check the waveform 2.

      Waveform 2 (Reference):
      Item Content
      Terminal No. (Symbols)

      • L180-8 (BLK3) - L180-9 (E)

      • L180-2 (BLK4) - L180-9 (E)
      Tool Setting 10 V/DIV., 100 msec./DIV.
      Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected