ENGINE IMMOBILISER SYSTEM (w/o Entry and Start System) > TERMINALS OF ECU

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CHECK TRANSPONDER KEY AMPLIFIER


  1. Disconnect the D31 amplifier connector and measure the resistance according to the value(s) in the table below.


    B065593E44


    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D31-7 (AGND) - Body ground
    		R - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  2. Reconnect the D31 amplifier connector and measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D31-1 (VC5) - D31-7 (AGND)
    		Y - R
    		Power source
    		No key is in ignition key cylinder
    		Below 1 V
    Key is in ignition key cylinder
    		4.6 to 5.4 V
    D31-4 (CODE) - D31-7 (AGND)
    		L - R
    		Demodulated signal of key code data
    		No key is in ignition key cylinder
    		Below 1 V
    Key is in ignition key cylinder
    		Waveform 1
    D31-5 (TXCT) - D31-7 (AGND)
    		W - R
    		Key code output signal
    		No key is in ignition key cylinder
    		Below 1 V
    Key is in ignition key cylinder
    		Waveform 2
    If the result is not as specified, the amplifier may have a malfunction.



  3. Inspect using an oscilloscope.



      B139208E01

    1. Waveform 1
      Tester Connection
      		D31-4 (CODE) - D31-7 (AGND)
      Tool Setting
      		2 V/DIV., 20 ms./DIV.
      Condition
      		Key is in ignition key cylinder



      2. B139205E01

    2. Waveform 2
      Tester Connection
      		D31-5 (TXCT) - D31-7 (AGND)
      Tool Setting
      		2 V/DIV., 10 ms./DIV.
      Condition
      		Key is in ignition key cylinder


CHECK TRANSPONDER KEY ECU


  1. Disconnect the D29 ECU connector and measure the resistance and voltage according to the value(s) in the table below.


    B088367E18


    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D29-16 (GND) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    D29-1 (+B) - D29-16 (GND)
    		Y - W-B
    		Battery
    		Always
    		11 to 14 V
    D29-2 (IG) - D29-16 (GND)
    		V - W-B
    		Ignition switch signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		11 to 14 V
    D29-3 (KSW) - D29-16 (GND)
    		SB - W-B*1
    LG - W-B*2
    		Unlock warning switch signal
    		No key is in ignition key cylinder
    		10 kΩ or higher
    Key is in ignition key cylinder
    		Below 1 Ω
    1. *1: for LHD
    2. *2: for RHD
    If the result is not as specified, there may be a malfunction on the wire harness side.

  2. Reconnect the D29 ECU connector and measure the resistance and voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D29-5 (AGND) - Body ground
    		R - Body ground
    		Ground
    		Always
    		Below 1 Ω
    D29-3 (KSW) - D29-16 (GND)
    		SB - W-B*1
    LG - W-B*2
    		Unlock warning switch signal
    		No key is in ignition key cylinder
    		11 to 14 V
    Key is in ignition key cylinder
    		Below 1 V
    D29-14 (VC5) - D29-5 (AGND)
    		Y - R
    		Power source
    		No key is in ignition key cylinder
    		Below 1 V
    Key is in ignition key cylinder
    		4.6 to 5.4 V
    D29-4 (TXCT) - D29-5 (AGND)
    		W - R
    		Transponder key amplifier communication signal
    		No key is in ignition key cylinder
    		Below 1 V
    Key is in ignition key cylinder
    		Waveform 1
    D29-15 (CODE) - D29-5 (AGND)
    		L - R
    		Transponder key amplifier communication signal
    		No key is in ignition key cylinder
    		Below 1 V
    Key is in ignition key cylinder
    		Waveform 2
    D29-13 (EFIO) - D29-16 (GND)
    		BR - W-B*1
    LG - W-B*2
    		ECM output signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Waveform 3
    D29-12 (EFII) - D29-16 (GND)
    		GR - W-B*1
    LG - W-B*2
    		ECM input signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Waveform 4
    D29-9 (D) - D29-16 (GND)
    		R - W-B*1
    LG - W-B*2
    		Diagnostic tester communication
    		Without communication
    		Below 1 V
    During communication
    		Pulse generation
    D29-7 (CTY) - D29-16 (GND)
    		LG - W-B
    		Door courtesy signal
    		Switch pushed
    		11 to 14 V
    Switch free
    		Below 1 V

    1. *1: for LHD
    2. *2: for RHD
    If the result is not as specified, the ECU may have a malfunction.



  3. Inspect using an oscilloscope.



      B139205E01

    1. Waveform 1
      Tester Connection
      		D29-4 (TXCT) - D29-5 (AGND)
      Tool Setting
      		2 V/DIV., 10 ms./DIV.
      Condition
      		Key is in ignition key cylinder



      2. B139208E01

    2. Waveform 2
      Tester Connection
      		D29-15 (CODE) - D29-5 (AGND)
      Tool Setting
      		2 V/DIV., 20 ms./DIV.
      Condition
      		Key is in ignition key cylinder



      3. B139206E01

    3. Waveform 3
      Tester Connection
      		D29-13 (EFIO) - D29-16 (GND)
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON



      4. B164432E01

    4. Waveform 4
      Tester Connection
      		D29-12 (EFII) - D29-16 (GND)
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON


CHECK ECM (for 1KR-FE and 1NR-FE)


  1. The values listed under "Specified Condition" are reference values. Because waterproof connectors are used for ECM, inspections can not be performed with the connectors connected.


    A199322E01


    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    B8-105 (E1) - Body ground
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    A18-11 (IMI) - B8-105 (E1)
    		G-B - BR
    		Transponder key ECU input signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Waveform 1
    A18-10 (IMO) - B8-105 (E1)
    		W-L - BR
    		Transponder key ECU output signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Waveform 2



    2. B139206E01

  2. Inspect using an oscilloscope.

    1. Waveform 1
      Tester Connection
      		A18-11 (IMI) - B8-105 (E1)
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON



      2. B164432E01

    2. Waveform 2
      Tester Connection
      		A18-10 (IMO) - B8-105 (E1)
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON


CHECK ECM (for 1ND-TV)


  1. The values listed under "Specified Condition" are reference values. Because waterproof connectors are used for ECM, inspections can not be performed with the connectors connected.


    A157743E03


    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A19-2 (E1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    A19-77 (IMI) - A19-2 (E1)
    		G-B - W-B
    		Transponder key ECU input signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Waveform 1
    A19-78 (IMO) - A19-2 (E1)
    		W-L - W-B
    		Transponder key ECU output signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Waveform 2



  2. Inspect using an oscilloscope.



      B139206E01

    1. Waveform 1
      Tester Connection
      		A19-77 (IMI) - A19-2 (E1)
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON



      2. B164432E01

    2. Waveform 2
      Tester Connection
      		A19-78 (IMO) - A19-2 (E1)
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON