Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

Vehicle Interior. Corolla. Zre142 Aze141
Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

  1. CHECK ENGINE SWITCH

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  1. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

  1. CHECK STEERING LOCK ECU

  1. CHECK ECM

  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

Engine Immobiliser System (W/ Smart Key System) -- Terminals Of Ecu



CHECK ENGINE SWITCH


  1. Disconnect the E38 engine switch connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E38-8 (AGND) - Body ground
    		GR - 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 E38 engine switch connector.

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E38-8 (AGND) - Body ground
    		GR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E38-14 (VC5) - E38-8 (AGND)
    		BE - GR
    		Power supply
    		Key is not in cabin
    		Below 1 V
    E38-14 (VC5) - E38-8 (AGND)
    		BE - GR
    		Power supply
    		Key is in cabin*
    		4.6 to 5.4 V
    E38-10 (CODE) - E38-8 (AGND)
    		G - GR
    		Demodulated signal of key code data
    		Key is not in cabin
    		Below 1 V
    E38-10 (CODE) - E38-8 (AGND)
    		G - GR
    		Demodulated signal of key code data
    		Press engine switch and hold key close to engine switch*
    		Pulse generation
    (See waveform 1)
    E38-9 (TXCT) - E38-8 (AGND)
    		SB - GR
    		Key code output signal
    		Key is not in cabin
    		Below 1 V
    E38-9 (TXCT) - E38-8 (AGND)
    		SB - GR
    		Key code output signal
    		Press engine switch and hold key close to engine switch*
    		Pulse generation
    (See waveform 2)
    1. If the result is not as specified, the engine switch may have a malfunction.


  5. Inspect using an oscilloscope.



      Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Item
      		Content
      Tester Connection
      		E38-10 (CODE) - E38-8 (AGND)
      Tool Setting
      		2 V/DIV., 50 ms./DIV.
      Condition
      		Press engine switch and hold key close to engine switch*
      HINT:
      *: Remove the key battery before performing this inspection.


      2. Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    2. Waveform 2 (Reference)

      Item
      		Content
      Tester Connection
      		E38-9 (TXCT) - E38-8 (AGND)
      Tool Setting
      		2 V/DIV., 50 ms./DIV.
      Condition
      		Press engine switch and hold key close to engine switch*
      HINT:
      *: Remove the key battery before performing this inspection.

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


  1. Disconnect the E36 certification ECU (smart key ECU assembly) connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E36-17 (E) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E36-1 (+B) - E36-17 (E)
    		GR - W-B
    		+B power supply
    		Always
    		11 to 14 V
    E36-18 (IG) - E36-17 (E)
    		B - W-B
    		Ignition power supply
    		Engine switch off
    		Below 1 V
    1. If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the E36 certification ECU (smart key ECU assembly) connector.

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E36-40 (AGND) - Body ground
    		GR - Body ground
    		Engine switch ground
    		Always
    		Below 1 Ω
    E36-30 (VC5) - E36-40 (AGND)
    		BE - GR
    		Engine switch power supply
    		Key is not in cabin
    		Below 1 V
    E36-30 (VC5) - E36-40 (AGND)
    		BE - GR
    		Engine switch power supply
    		Key is in cabin*
    		4.6 to 5.4 V
    E36-9 (CODE) - E36-40 (AGND)
    		G - GR
    		Engine switch CODE input
    		Key is not in cabin
    		Below 1 V
    E36-9 (CODE) - E36-40 (AGND)
    		G - GR
    		Engine switch CODE input
    		Press engine switch and hold key close to engine switch*
    		Pulse generation (See waveform 1)
    E36-8 (TXCT) - E36-40 (AGND)
    		SB - GR
    		Engine switch TXCT output
    		Key is not in cabin
    		Below 1 V
    E36-8 (TXCT) - E36-40 (AGND)
    		SB - GR
    		Engine switch TXCT output
    		Press engine switch and hold key close to engine switch*
    		Pulse generation (See waveform 2)
    1. If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.


  5. Inspect using an oscilloscope.



      Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Item
      		Content
      Tester Connection
      		E36-9 (CODE) - E36-40 (AGND)
      Tool Setting
      		2 V/DIV., 50 ms./DIV.
      Condition
      		Press engine switch and hold key close to engine switch*
      HINT:
      *: Remove the key battery before performing this inspection.


      2. Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    2. Waveform 2 (Reference)

      Item
      		Content
      Tester Connection
      		E36-8 (TXCT) - E36-40 (AGND)
      Tool Setting
      		2 V/DIV., 50 ms./DIV.
      Condition
      		Press engine switch and hold key close to engine switch*
      HINT:
      *: Remove the key battery before performing this inspection.

CHECK ID CODE BOX (IMMOBILISER CODE ECU)


  1. Disconnect the E22 ID code box (immobiliser code ECU) connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E22-8 (GND) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E22-1 (+B) - E22-8 (GND)
    		GR - W-B
    		+B power supply
    		Always
    		11 to 14 V
    1. If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the E22 ID code box (immobiliser code ECU) connector.

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E22-5 (EFII) - E22-8 (GND)
    		LG - W-B
    		ECM input signal
    		Engine switch off
    		10 to 14 V
    E22-5 (EFII) - E22-8 (GND)
    		LG - W-B
    		ECM input signal
    		Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after engine switch first turned on (IG) after battery disconnected and connected.
    		Pulse generation
    (see waveform 1)
    E22-6 (EFIO) - E22-8 (GND)
    		P - W-B
    		ECM output signal
    		Engine switch off
    		Below 1 V
    E22-6 (EFIO) - E22-8 (GND)
    		P - W-B
    		ECM output signal
    		Engine switch on (IG)
    		Pulse generation
    (see waveform 2)
    1. If the result is not as specified, the ID code box (immobiliser code ECU) may have a malfunction.


  5. Inspect using an oscilloscope.



      Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Item
      		Content
      Tester Connection
      		E22-5 (EFII) - E22-8 (GND)
      Tool Setting
      		5 V/DIV., 500 ms./DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after engine switch first turned on (IG) after battery disconnected and connected.


      2. Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    2. Waveform 2 (Reference)

      Item
      		Content
      Tester Connection
      		E22-6 (EFIO) - E22-8 (GND)
      Tool Setting
      		10 V/DIV., 100 ms./DIV.
      Condition
      		Engine switch on (IG)

CHECK STEERING LOCK ECU


  1. Disconnect the E39 steering lock ECU connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E39-2 (SGND) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E39-1 (GND) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E39-7 (B) - Body ground
    		L - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    E39-6 (IG2) - Body ground
    		B - Body ground
    		Ignition power supply
    		Engine switch off
    		0 V
    Engine switch on (IG)
    		11 to 14 V
    1. If the result is not as specified, there may be a malfunction on the wire harness side.

CHECK ECM

Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A50-11 (IMI) - B31-105 (E1)
    		P - BR
    		ID code box (immobiliser code ECU) input signal
    		Engine switch off
    		Below 1 V
    A50-11 (IMI) - B31-105 (E1)
    		P - BR
    		ID code box (immobiliser code ECU) input signal
    		Engine switch on (IG)
    		Pulse generation
    (See waveform 1)
    A50-10 (IMO) - B31-105 (E1)
    		LG-B - BR
    		ID code box (immobiliser code ECU) output signal
    		Engine switch off
    		10 to 14 V
    A50-10 (IMO) - B31-105 (E1)
    		LG-B - BR
    		ID code box (immobiliser code ECU) output signal
    		Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after engine switch first turned on (IG) after battery disconnected and connected.
    		Pulse generation
    (See waveform 2)
    If the result is not as specified, the ECM may have a malfunction.


  2. Inspect using an oscilloscope.



      Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Item
      		Content
      Tester Connection
      		A50-11 (IMI) - B31-105 (E1)
      Tool Setting
      		10 V/DIV., 100 ms./DIV.
      Condition
      		Engine switch on (IG)


      2. Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

    2. Waveform 2 (Reference)

      Item
      		Content
      Tester Connection
      		A50-10 (IMO) - B31-105 (E1)
      Tool Setting
      		5 V/DIV., 500 ms./DIV.
      Condition
      		Within 3 seconds after starter operates and initial combustion occurs, or within 3seconds after engine switch first turned on (IG) after battery disconnected and connected.

CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  1. Disconnect the 2B and 2E instrument panel junction block connectors.



  2. Disconnect the E50 and E51 main body ECU connectors.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/ Smart Key System) Terminals Of Ecu

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2E-17 (GND1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E51-4 (GND2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E51-1 (AM1) - Body ground
    		L - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    E50-6 (AM2) - Body ground
    		L - Body ground
    		+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.