ENGINE IMMOBILISER SYSTEM > TERMINALS OF ECU

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CHECK TRANSPONDER KEY AMPLIFIER

B065593E08

  1. Disconnect the T9 amplifier connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    T9-7 (AGND) - Body ground
    		L - Body ground
    		Ground
    		Always
    		Below 1 Ω
    1. If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the T9 amplifier connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    T9-1 (VC5) - T9-7 (AGND)
    		GR-B - L
    		Power source
    		No key in ignition key cylinder
    		Below 1 V
    T9-1 (VC5) - T9-7 (AGND)
    		GR-B - L
    		Power source
    		Key inserted
    		4.6 to 5.4 V
    T9-4 (CODE) - T9-7 (AGND)
    		P-G - L
    		Demodulated signal of key code data
    		No key in ignition key cylinder →
    Key inserted
    		Pulse generation
    (see waveform 1)
    T9-5 (TXCT) - T9-7 (AGND)
    		LG-R - L
    		Key code output signal
    		No key in ignition key cylinder →
    Key inserted
    		Pulse generation
    (see waveform 2)
    T9-7 (AGND) - Body ground
    		L - Body ground
    		Ground
    		Always
    		Below 1 Ω
    1. If the result is not as specified, there may be a malfunction on the amplifier.


  5. Inspect using an oscilloscope.



      B051053E02

    1. Waveform 1

      Tester Connection
      		T9-4 (CODE) - T9-7 (AGND)
      Tool Setting
      		2 V/DIV., 20 msec/DIV.
      Condition
      		No key in ignition key cylinder → Key inserted


      2. B051052E01

    2. Waveform 2

      Tester Connection
      		T9-5 (TXCT) - T9-7 (AGND)
      Tool Setting
      		2 V/DIV., 20 msec/DIV.
      Condition
      		No key in ignition key cylinder → Key inserted

CHECK TRANSPONDER KEY ECU ASSEMBLY

B081103E01

  1. Disconnect the T10 ECU 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
    T10-16 (GND) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    T10-1 (+B) - T10-16 (GND)
    		R - W-B
    		Battery
    		Always
    		11 to 14 V
    T10-2 (IG) - T10-16 (GND)
    		BE - W-B
    		Ignition switch
    		Ignition switch OFF
    		Below 1 V
    T10-2 (IG) - T10-16 (GND)
    		BE - W-B
    		Ignition switch
    		Ignition switch ON
    		11 to 14 V
    T10-3 (KSW) - T10-5 (AGND)
    		G-B - L
    		Unlock warning switch
    		No key in ignition key cylinder
    		10 kΩ or higher
    T10-3 (KSW) - T10-5 (AGND)
    		G-B - L
    		Unlock warning switch
    		Key inserted
    		Below 1Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the T10 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
    T10-14 (VC5) - T10-16 (GND)
    		GR-B - W-B
    		Power source
    		No key in ignition key cylinder
    		0 V
    T10-14 (VC5) - T10-16 (GND)
    		GR-B - W-B
    		Power source
    		Key inserted
    		4.6 to 5.4 V
    T10-4 (TXCT) - T10-16 (GND)
    		LG-R - W-B
    		Transponder key amplifier communication signal
    		No key in ignition key cylinder →
    Key inserted
    		Pulse generation
    (see waveform 1)
    T10-15 (CODE) - T10-16 (GND)
    		P-G - W-B
    		Transponder key amplifier communication signal
    		No key in ignition key cylinder →
    Key inserted
    		Pulse generation
    (see waveform 2)
    T10-13 (EFIO) - T10-16 (GND)
    		L-W - W-B
    		ECM output signal
    		Ignition switch OFF → ON
    		Pulse generation
    (see waveform 3)
    T10-12 (EFII) - T10-16 (GND)
    		LG-B - W-B
    		ECM input signal
    		Ignition switch off
    		11 to 14 V
    Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected.
    		Pulse generation
    (see waveform 4)
    If the result is not as specified, there may be a malfunction on the ECU.


  5. Inspect using an oscilloscope.



      B051052E02

    1. Waveform 1

      Tester Connection
      		T10-4 (TXCT) - T10-16 (GND)
      Tool Setting
      		2.5 V/DIV., 20 msec/DIV.
      Condition
      		No key in ignition key cylinder → Key inserted


      2. B051053E04

    2. Waveform 2

      Tester Connection
      		T10-15 (CODE) - T10-16 (GND)
      Tool Setting
      		2.5 V/DIV., 20 msec/DIV.
      Condition
      		No key in ignition key cylinder → Key inserted


      3. B051050E01

    3. Waveform 3

      Tester Connection
      		T10-13 (EFIO) - T10-16 (GND)
      Tool Setting
      		12 V/DIV., 100 msec/DIV.
      Condition
      		Ignition switch OFF → ON


      4. B229710E01

    4. Waveform 4

      Tester Connection
      		T10-12 (EFII) - T10-16 (GND)
      Tool Setting
      		5 V/DIV., 500 ms/DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected.

CHECK ECM (for 2TR-FE)

A066714E18

  1. Disconnect the E4 ECM connectors.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E4-3 (E1) - Body ground
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    1. If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the E4 ECM connectors.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E7-16 (IMI) - E4-3 (E1)
    		L-W - BR
    		Transponder key ECU input signal
    		Ignition switch off
    		Below 1 V
    Ignition switch on
    		Pulse generation
    (see waveform 1)
    E7-15 (IMO) - E4-3 (E1)
    		LG-B - BR
    		Transponder key ECU output signal
    		Ignition switch off
    		11 to 14 V
    Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected.
    		Pulse generation
    (see waveform 2)
    1. If the result is not as specified, the ECM may have a malfunction.


  5. Inspect using an oscilloscope.



      B051050E01

    1. Waveform 1

      Tester Connection
      		E7-16 (IMI) - E4-3 (E1)
      Tool Setting
      		10 V/DIV., 100 msec/DIV.
      Condition
      		Ignition switch on


      2. B229710E01

    2. Waveform 2

      Tester Connection
      		E7-15 (IMO) - E4-3 (E1)
      Tool Setting
      		5 V/DIV., 500 msec/DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected.

CHECK ECM (for 1GR-FE)

A193170E02

  1. Disconnect the E11 ECM connectors.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E11-12 (E1) - Body ground
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    1. If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Disconnect the E11 ECM connectors.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E14-14 (IMI) - E11-12 (E1)
    		L-W - BR
    		Transponder key ECU input signal
    		Ignition switch off
    		Below 1 V
    Ignition switch on
    		Pulse generation
    (see waveform 1)
    E14-20 (IMO) - E11-12 (E1)
    		LG-B - BR
    		Transponder key ECU output signal
    		Ignition switch off
    		11 to 14 V
    Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected.
    		Pulse generation
    (see waveform 2)
    1. If the result is not as specified, the ECM may have a malfunction.


  5. Inspect using an oscilloscope.



      B051050E01

    1. Waveform 1

      Tester Connection
      		E14-14 (IMI) - E11-12 (E1)
      Tool Setting
      		10 V/DIV., 100 msec/DIV.
      Condition
      		Ignition switch on


      2. B229710E01

    2. Waveform 2

      Tester Connection
      		E14-20 (IMO) - E11-12 (E1)
      Tool Setting
      		5 V/DIV., 500 msec/DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after ignition switch first turned on (IG) after battery disconnected and connected.