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

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

  1. CHECK TRANSPONDER KEY AMPLIFIER

  1. CHECK TRANSPONDER KEY ECU ASSEMBLY

  1. CHECK ECM

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



CHECK TRANSPONDER KEY AMPLIFIER


  1. Disconnect the E29 transponder key amplifier connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/O 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
    E29-7 (AGND) - Body ground
    		R - Body ground*1
    V - Body ground*2
    		Ground
    		Always
    		Below 1 Ω
    1. *1: for TMC Made
    2. *2: Except for TMC Made
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the E29 transponder key amplifier connector.

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

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E29-1 (VC5) - E29-7 (AGND)
    		B - R*1
    G - V*2
    		Power source
    		No key is in ignition key cylinder
    		Below 1 V
    E29-1 (VC5) - E29-7 (AGND)
    		B - R*1
    G - V*2
    		Power source
    		Key is in ignition key cylinder
    		4.6 to 5.4 V
    E29-4 (CODE) - E29-7 (AGND)
    		P - R*1
    SB - V*2
    		Demodulated signal of key code data
    		No key is in ignition key cylinder
    		Below 1 V
    E29-4 (CODE) - E29-7 (AGND)
    		P - R*1
    SB - V*2
    		Demodulated signal of key code data
    		Key is in ignition key cylinder
    		Waveform 1
    E29-5 (TXCT) - E29-7 (AGND)
    		G - R*1
    BE - V*2
    		Key code output signal
    		No key is in ignition key cylinder
    		Below 1 V
    E29-5 (TXCT) - E29-7 (AGND)
    		G - R*1
    BE - V*2
    		Key code output signal
    		Key is in ignition key cylinder
    		Waveform 2
    1. *1: for TMC Made
    2. *2: Except for TMC Made
    If the result is not as specified, the transponder key amplifier 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/O Smart Key System) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Tester Connection
      		E29-4 (CODE) - E29-7 (AGND)
      Tool Setting
      		2 V/DIV., 20 ms./DIV.
      Condition
      		Key is in ignition key cylinder


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

    2. Waveform 2 (Reference)

      Tester Connection
      		E29-5 (TXCT) - E29-7 (AGND)
      Tool Setting
      		2 V/DIV., 10 ms./DIV.
      Condition
      		Key is in ignition key cylinder

CHECK TRANSPONDER KEY ECU ASSEMBLY


  1. Disconnect the E21 transponder key ECU assembly connector.


    Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function).Engine Immobiliser System (W/O 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
    E21-16 (GND) - Body ground
    		BR - Body ground*1
    W-B - Body ground*2
    		Ground
    		Always
    		Below 1 Ω
    E21-1 (+B) - E21-16 (GND)
    		W - BR*1
    GR - W-B*2
    		Battery
    		Always
    		11 to 14 V
    E21-2 (IG) - E21-16 (GND)
    		B - BR*1
    B - W-B*2
    		Ignition switch signal
    		Ignition switch off
    		Below 1 V
    E21-2 (IG) - E21-16 (GND)
    		B - BR*1
    B - W-B*2
    		Ignition switch signal
    		Ignition switch ON
    		11 to 14 V
    E21-3 (KSW) - E21-16 (GND)
    		L - BR*1
    L - W-B*2
    		Unlock warning switch signal
    		No key is in ignition key cylinder
    		10 kΩ or higher
    E21-3 (KSW) - E21-16 (GND)
    		L - BR*1
    L - W-B*2
    		Unlock warning switch signal
    		Key is in ignition key cylinder
    		Below 1 Ω
    1. *1: for TMC Made
    2. *2: Except for TMC Made
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the E21 transponder 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
    E21-5 (AGND) - Body ground
    		R - Body ground*1
    V - Body ground*2
    		Ground
    		Always
    		Below 1 Ω
    E21-3 (KSW) - E21-16 (GND)
    		L - BR*1
    L - W-B*2
    		Unlock warning switch signal
    		No key is in ignition key cylinder
    		11 to 14 V
    E21-3 (KSW) - E21-16 (GND)
    		L - BR*1
    L - W-B*2
    		Unlock warning switch signal
    		Key is in ignition key cylinder
    		Below 1 V
    E21-14 (VC5) - E21-5 (AGND)
    		B - R*1
    G - V*2
    		Power source
    		No key is in ignition key cylinder
    		Below 1 V
    E21-14 (VC5) - E21-5 (AGND)
    		B - R*1
    G - V*2
    		Power source
    		Key is in ignition key cylinder
    		4.6 to 5.4 V
    E21-4 (TXCT) - E21-5 (AGND)
    		G - R*1
    BE - V*2
    		Transponder key amplifier communication signal
    		No key is in ignition key cylinder
    		Below 1 V
    E21-4 (TXCT) - E21-5 (AGND)
    		G - R*1
    BE - V*2
    		Transponder key amplifier communication signal
    		Key is in ignition key cylinder
    		Waveform 1
    E21-15 (CODE) - E21-5 (AGND)
    		P - R*1
    SB - V*2
    		Transponder key amplifier communication signal
    		No key is in ignition key cylinder
    		Below 1 V
    E21-15 (CODE) - E21-5 (AGND)
    		P - R*1
    SB - V*2
    		Transponder key amplifier communication signal
    		Key is in ignition key cylinder
    		Waveform 2
    E21-13 (EFIO) - E21-16 (GND)
    		P - BR*1
    P - W-B*2
    		ECM output signal
    		Ignition switch off
    		Below 1 V
    E21-13 (EFIO) - E21-16 (GND)
    		P - BR*1
    P - W-B*2
    		ECM output signal
    		Ignition switch ON
    		Waveform 3
    E21-12 (EFII) - E21-16 (GND)
    		LG - BR*1
    LG - W-B*2
    		ECM input signal
    		Ignition switch off
    		10 to 14 V
    E21-12 (EFII) - E21-16 (GND)
    		LG - BR*1
    LG - W-B*2
    		ECM input signal
    		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.
    		Waveform 4
    E21-9 (D) - E21-16 (GND)
    		W - BR*1
    W - W-B*2
    		Diagnostic tester communication
    		Without communication
    		Below 1 V
    E21-9 (D) - E21-16 (GND)
    		W - BR*1
    W - W-B*2
    		Diagnostic tester communication
    		During communication
    		Pulse generation
    E21-7 (CTY) - E21-16 (GND)
    		BR - BR*1
    R - W-B*2
    		Door courtesy signal
    		Switch pushed
    		11 to 14 V
    E21-7 (CTY) - E21-16 (GND)
    		BR - BR*1
    R - W-B*2
    		Door courtesy signal
    		Switch free
    		Below 1 V
    E21-8 (IND) - E21-16 (GND)
    		Y - BR*1
    Y - W-B*2
    		Security indicator signal
    		Security indicator light is on
    		11 to 14 V
    E21-8 (IND) - E21-16 (GND)
    		Y - BR*1
    Y - W-B*2
    		Security indicator signal
    		Security indicator light is off
    		Below 1 V
    1. *1: for TMC Made
    2. *2: Except for TMC Made
    If the result is not as specified, the transponder 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/O Smart Key System) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Tester Connection
      		E21-4 (TXCT) - E21-5 (AGND)
      Tool Setting
      		2 V/DIV., 10 ms./DIV.
      Condition
      		Key is in ignition key cylinder


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

    2. Waveform 2 (Reference)

      Tester Connection
      		E21-15 (CODE) - E21-5 (AGND)
      Tool Setting
      		2 V/DIV., 20 ms./DIV.
      Condition
      		Key is in ignition key cylinder


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

    3. Waveform 3 (Reference)

      Tester Connection
      		E21-13 (EFIO) - E21-16 (GND)
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON


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

    4. Waveform 4 (Reference)

      Tester Connection
      		E21-12 (EFII) - E21-16 (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


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


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


    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A50-11 (IMI) - B31-104 (E1)*1
    A50-11 (IMI) - B31-105 (E1)*2
    		P - BR
    		Transponder key ECU input signal
    		Ignition switch off
    		Below 1 V
    A50-11 (IMI) - B31-104 (E1)*1
    A50-11 (IMI) - B31-105 (E1)*2
    		P - BR
    		Transponder key ECU input signal
    		Ignition switch ON
    		Waveform 1
    A50-10 (IMO) - B31-104 (E1)*1
    A50-10 (IMO) - B31-105 (E1)*2
    		LG-B - BR
    		Transponder key ECU output signal
    		Ignition switch off
    		10 to 14 V
    A50-10 (IMO) - B31-104 (E1)*1
    A50-10 (IMO) - B31-105 (E1)*2
    		LG-B - BR
    		Transponder key ECU output signal
    		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.
    		Waveform 2
    1. *1: for 2AZ-FE
    2. *2: for 2ZR-FE
    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/O Smart Key System) Terminals Of Ecu

    1. Waveform 1 (Reference)

      Tester Connection
      		A50-11 (IMI) - B31-104 (E1)*1
      A50-11 (IMI) - B31-105 (E1)*2
      Tool Setting
      		2 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON
      1. *1: for 2AZ-FE
      2. *2: for 2ZR-FE


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

    2. Waveform 2 (Reference)

      Tester Connection
      		A50-10 (IMO) - B31-104 (E1)*1
      A50-10 (IMO) - B31-105 (E1)*2
      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.
      1. *1: for 2AZ-FE
      2. *2: for 2ZR-FE