Engine Immobiliser System (For Hatchback) Terminals Of Ecu

Vehicle Interior. Yaris. Ncp93, 131
Theft Deterrent Keyless Entry. Yaris. Ncp93, 131

  1. CHECK TRANSPONDER KEY AMPLIFIER

  1. CHECK TRANSPONDER KEY ECU ASSEMBLY

  1. CHECK ECM

Engine Immobiliser System (For Hatchback) -- Terminals Of Ecu



CHECK TRANSPONDER KEY AMPLIFIER

Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

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

    Terminal No. (Symbol)
    		Input/Output
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    		Related Data List Item/DTC
    D140-7 (AGND) - Body ground
    		-
    		GR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    		-
    D140-1 (VC5) - D140-7 (AGND)
    		Input
    		P - GR
    		Transponder key amplifier power supply
    		No key in ignition key cylinder
    		Below 1 V
    		-
    D140-4 (CODE) - D140-7 (AGND)
    		Output
    		G - GR
    		Demodulated signal of key code data
    		No key in ignition key cylinder
    		Below 1 V
    		-
    D140-5 (TXCT) - D140-7 (AGND)
    		Input
    		L - GR
    		Key code output signal
    		No key in ignition key cylinder
    		Below 1 V
    		-

  2. Check for pulses according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Input/Output
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    		Related Data List Item/DTC
    D140-1 (VC5) - D140-7 (AGND)
    		Input
    		P - GR
    		Transponder key amplifier power supply
    		Key inserted in ignition key cylinder
    		Pulse generation (See waveform 1)
    1. BCC Malfunction
    2. Abnormal Status
    3. Different Encrypt Code
    4. Different Serial Number
    (If immobiliser key code certification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above)
    D140-4 (CODE) - D140-7 (AGND)
    		Output
    		G - GR
    		Demodulated signal of key code data
    		Key inserted in ignition key cylinder
    		Pulse generation (See waveform 2)
    D140-5 (TXCT) - D140-7 (AGND)
    		Input
    		L - GR
    		Key code output signal
    		Key inserted in ignition key cylinder
    		Pulse generation (See waveform 3)


  3. Inspect using an oscilloscope.

    NOTICE:
    The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.



      Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Measurement Condition
      Item
      		Content
      Tester Connection
      		D140-1 (VC5) - D140-7 (AGND)
      Tool Setting
      		1 V/DIV., 20 ms./DIV.
      Condition
      		Key inserted in ignition key cylinder


      2. Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

    2. Waveform 2 (Reference)

      Measurement Condition
      Item
      		Content
      Tester Connection
      		D140-4 (CODE) - D140-7 (AGND)
      Tool Setting
      		1 V/DIV., 20 ms./DIV.
      Condition
      		Key inserted in ignition key cylinder


      3. Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

    3. Waveform 3 (Reference)

      Measurement Condition
      Item
      		Content
      Tester Connection
      		D140-5 (TXCT) - D140-7 (AGND)
      Tool Setting
      		1 V/DIV., 20 ms./DIV.
      Condition
      		Key inserted in ignition key cylinder

CHECK TRANSPONDER KEY ECU ASSEMBLY

Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

  1. Disconnect the D139 transponder key ECU assembly connector.

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

    Terminal No. (Symbol)
    		Input/Output
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    		Related Data List Item/DTC
    D139-16 (GND) - Body ground
    		-
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    		-
    D139-1 (+B) - D139-16 (GND)
    		Input
    		Y - BR
    		Battery
    		Always
    		11 to 14 V
    		+B
    D139-2 (IG) - D139-16 (GND)
    		Input
    		V - BR
    		Ignition switch
    		Ignition switch off
    		Below 1 V
    		IG SW
    Ignition switch ON
    		11 to 14 V
    D139-3 (KSW) - D139-16 (GND)
    		Input
    		BE - BR
    		Unlock warning switch
    		No key in ignition key cylinder
    		10 kΩ or higher
    		Key SW/B2780
    Key inserted in ignition key cylinder
    		Below 1 Ω

  3. Reconnect the D139 transponder key ECU connector.

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

    Terminal No. (Symbol)
    		Input/Output
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    		Related Data List Item/DTC
    D139-14 (VC5) - D139-16 (GND)
    		Input
    		P - BR
    		Transponder key amplifier power supply
    		No key in ignition key cylinder
    		Below 1 V
    1. BCC Malfunction
    2. Abnormal Status
    3. Different Encrypt Code
    4. Different Serial Number
    (If immobiliser key code certification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above)
    Key inserted in ignition key cylinder
    		Pulse generation (See waveform 1)
    D139-4 (TXCT) - D139-16 (GND)
    		Input
    		L - BR
    		Key code output signal
    		No key in ignition key cylinder
    		Below 1 V
    Key inserted in ignition key cylinder
    		Pulse generation (See waveform 2)
    D139-15 (CODE) - D139-16 (GND)
    		Output
    		G - BR
    		Demodulated signal of key code data
    		No key in ignition key cylinder
    		Below 1 V
    Key inserted in ignition key cylinder
    		Pulse generation (See waveform 3)
    D139-13 (EFIO) - D139-16 (GND)
    		Input
    		R - BR
    		ECM output signal
    		Ignition switch off
    		Below 1 V
    		E/G Start Permission
    Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected
    		Pulse generation (See waveform 4)
    D139-12 (EFII) - D139-16 (GND)
    		Output
    		LG - BR
    		ECM input signal
    		Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected
    		Pulse generation (See waveform 5)
    		E/G Start Permission
    D139-8 (IND) - D139-16 (GND)
    		Output
    		SB - BR
    		Theft warning indicator light signal
    		Engine immobiliser system set
    		Pulse generation
    		Immobiliser
    Engine immobiliser system unset
    		Below 1 V
    D139-9 (D) - D139-16 (GND)
    		Input/Output
    		B - BR
    		Diagnosis tester communication
    		Always
    		Pulse generation
    		-
    D139-5 (AGND) - Body ground
    		-
    		GR - Body ground
    		Transponder key amplifier ground
    		Always
    		Below 1 Ω
    		-


  5. Inspect using an oscilloscope.

    NOTICE:
    The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.



      Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Measurement Condition
      Item
      		Content
      Tester Connection
      		D139-14 (VC5) - D139-16 (GND)
      Tool Setting
      		1 V/DIV., 20 ms./DIV.
      Condition
      		Key inserted in ignition key cylinder


      2. Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

    2. Waveform 2 (Reference)

      Measurement Condition
      Item
      		Content
      Tester Connection
      		D139-4 (TXCT) - D139-16 (GND)
      Tool Setting
      		1 V/DIV., 20 ms./DIV.
      Condition
      		Key inserted in ignition key cylinder


      3. Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

    3. Waveform 3 (Reference)

      Measurement Condition
      Item
      		Content
      Tester Connection
      		D139-15 (CODE) - D139-16 (GND)
      Tool Setting
      		1 V/DIV., 20 ms./DIV.
      Condition
      		Key inserted in ignition key cylinder


    4. Waveform 4 (Reference)


      Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu


      Text in Illustration
      *a
      		Waveform A
      		*b
      		Waveform B
      *c
      		Approximately 160 ms
      		*d
      		Approximately 510 ms
      *e
      		Approximately 270 ms
      		-
      		-
      Measurement Condition
      Item
      		Content
      Tester Connection
      		D139-13 (EFIO) - D139-16 (GND)
      Tool Setting
      		2 V/DIV., 500 ms./DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected


    5. Waveform 5 (Reference)


      Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu


      Text in Illustration
      *a
      		Waveform A
      		*b
      		Waveform B
      *c
      		Approximately 160 ms
      		*d
      		Approximately 510 ms
      *e
      		Approximately 270 ms
      		-
      		-
      Measurement Condition
      Item
      		Content
      Tester Connection
      		D139-12 (EFII) - D139-16 (GND)
      Tool Setting
      		2 V/DIV., 500 ms./DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected

CHECK ECM

Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu

  1. Measure the voltage and check for pulses according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Input/Output
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    		Related Data List Item/DTC
    C51-16 (E1) - Body ground
    		-
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    		-
    A72-1 (BATT) - C51-16 (E1)
    		Input
    		Y - W-B
    		+B power supply
    		Always
    		11 to 14 V
    		-
    A72-3 (+B2) - C51-16 (E1)
    		Input
    		L - W-B
    		+B power supply
    		Ignition switch ON
    		11 to 14 V
    		-
    A72-2 (+B) - C51-16 (E1)
    		Input
    		B - W-B
    		+B power supply
    		Ignition switch ON
    		11 to 14 V
    		-
    A72-29 (IMO) - C51-16 (E1)
    		Input
    		W - W-B
    		Transponder key ECU assembly communication input
    		Ignition switch off
    		11 to 14 V
    		-
    Transponder key ECU assembly communication input
    		Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and connected.
    		Pulse generation
    (See waveform 1)
    		-
    A72-28 (IMI) - C51-16 (E1)
    		Output
    		G - W-B
    		Transponder key ECU assembly communication output
    		Ignition switch off
    		11 to 14 V
    		-
    Transponder key ECU assembly communication output
    		Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected
    		Pulse generation
    (See waveform 2)
    		-


  2. Inspect using an oscilloscope.



    1. Waveform 1 (Reference)


      Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu


      Text in Illustration
      *a
      		Waveform A
      		*b
      		Waveform B
      *c
      		Approximately 160 ms
      		*d
      		Approximately 510 ms
      *e
      		Approximately 270 ms
      		-
      		-
      Measurement Condition
      Item
      		Content
      Tester Connection
      		A72-29 (IMO) - C51-16 (E1)
      Tool Setting
      		2 V/DIV., 500 ms./DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected


    2. Waveform 2 (Reference)


      Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Engine Immobiliser System (For Hatchback) Terminals Of Ecu


      Text in Illustration
      *a
      		Waveform A
      		*b
      		Waveform B
      *c
      		Approximately 160 ms
      		*d
      		Approximately 510 ms
      *e
      		Approximately 270 ms
      		-
      		-
      Measurement Condition
      Item
      		Content
      Tester Connection
      		A72-28 (IMI) - C51-16 (E1)
      Tool Setting
      		2 V/DIV., 500 ms./DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected