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


  1. CHECK TRANSPONDER KEY AMPLIFIER


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

      A011BFLE44
      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.


      1. A0117JQE01

        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. A011BUVE01

        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

  2. 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.

      A011AUGE18
      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: for LHD

      • *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: for LHD

      • *2: for RHD

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

    3. Inspect using an oscilloscope.


      1. A011BUVE01

        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. A0117JQE01

        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. A0119ZKE01

        Waveform 3

        Tester Connection D29-13 (EFIO) - D29-16 (GND)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
      4. A01185ZE01

        Waveform 4

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

  3. 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.

      A011A7IE01
      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. A0119ZKE01

      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. A01185ZE01

        Waveform 2

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

  4. 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.

      A0118PXE03
      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.


      1. A0119ZKE01

        Waveform 1

        Tester Connection A19-77 (IMI) - A19-2 (E1)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
      2. A01185ZE01

        Waveform 2

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