ENGINE IMMOBILISER SYSTEM TERMINALS OF ECU


  1. CHECK ENGINE SWITCH


    1. Disconnect the F22 engine switch connector.

      A019MNEE13

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

      Tech Tips

      Measure the values on the wire harness side with connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F22-8 (AGND) - Body ground BR - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the F22 engine switch connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F22-9 (TXCT) - F22-8 (AGND) L - BR Key code output signal

      • Engine switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      F22-9 (TXCT) - F22-8 (AGND) L - BR Key code output signal

      • Engine switch off

      • Key not in cabin

      • Engine switch pressed within 30 seconds

      Pulse generation

      (See waveform 1)
      F22-10 (CODE) - F22-8 (AGND) W - BR Demodulated signal of key code data

      • Engine switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      F22-10 (CODE) - F22-8 (AGND) W - BR Demodulated signal of key code data

      • Engine switch off

      • Key battery removed

      • Engine switch touched with key and pressed

      Pulse generation

      (See waveform 2)
      F22-14 (VC5) - F22-8 (AGND) R - BR Power supply

      • Engine switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      F22-14 (VC5) - F22-8 (AGND) R - BR Power supply

      • Engine switch off

      • Key not in cabin

      • Engine switch pressed within 30 seconds

      Pulse generation

      (See waveform 3)

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

    5. Inspect using an oscilloscope.


      1. A019P6UE01

        Waveform 1 (Reference)

        Item Content
        Tester Connection F22-9 (TXCT) - F22-8 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Engine switch off

        • Key not in cabin

        • Engine switch pressed within 30 seconds
      2. A019JP7E01

        Waveform 2 (Reference)

        Item Content
        Tester Connection F22-10 (CODE) - F22-8 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Engine switch off

        • Key battery removed

        • Engine switch touched with key and pressed
      3. A019O8SE01

        Waveform 3 (Reference)

        Item Content
        Tester Connection F22-14 (VC5) - F22-8 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition

        • Engine switch off

        • Key not in cabin

        • Engine switch pressed within 30 seconds

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Disconnect the F58 certification ECU (smart key ECU assembly) connector.

      A019P7JE05

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

      Tech Tips

      Measure the values on the wire harness side with connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F58-1 (+B) - F58-15 (E) LG - W-B +B power supply Always 11 to 14 V
      F58-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F58-17 (CUTB) - F58-15 (E) L - W-B Dark current cut fuse pin input signal Always 11 to 14 V

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the F58 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
      F58-2 (IND) - Body ground BE - Body ground Security indicator light signal

      • Engine switch on (IG)

      • Security indicator light off

      		 Below 2 V
      F58-2 (IND) - Body ground BE - Body ground Security indicator light signal

      • Engine switch off

      • Security indicator light blinks

      		 Pulse generation
      F58-12 (TXCT) - F58-36 (AGND) L - BR Engine switch TXCT output

      • Engine switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      F58-12 (TXCT) - F58-36 (AGND) L - BR Engine switch TXCT output

      • Engine switch off

      • Key not in cabin

      • Engine switch pressed within 30 seconds

      		 Pulse generation (See waveform 1)
      F58-13 (CODE) - F58-36 (AGND) W - BR Engine switch CODE input

      • Engine switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      F58-13 (CODE) - F58-36 (AGND) W - BR Engine switch CODE input

      • Engine switch off

      • Key battery removed

      • Engine switch touched with key and pressed

      		 Pulse generation (See waveform 2)
      F58-16 (IG) - F58-15 (E) B - W-B Ignition power supply Engine switch off Below 1 V
      F58-16 (IG) - F58-15 (E) B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V
      F58-28 (VC5) - F58-36 (AGND) R - BR Engine switch power supply

      • Engine switch off

      • 30 seconds after door opened and closed

      • Brake pedal not depressed

      		 Below 1 V
      F58-28 (VC5) - F58-36 (AGND) R - BR Engine switch power supply

      • Engine switch off

      • Key not in cabin

      • Engine switch pressed within 30 seconds

      		 Pulse generation (See waveform 3)
      F58-36 (AGND) - Body ground BR - Body ground Engine switch ground Always Below 1 Ω

      If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

    5. Inspect using an oscilloscope.


      1. A019P6UE01

        Waveform 1 (Reference)

        Item Content
        Tester Connection F58-12 (TXCT) - F58-36 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Engine switch off

        • Key not in cabin

        • Engine switch pressed within 30 seconds
      2. A019JP7E01

        Waveform 2 (Reference)

        Item Content
        Tester Connection F58-13 (CODE) - F58-36 (AGND)
        Tool Setting 2 V/DIV., 50 ms./DIV.
        Condition

        • Engine switch off

        • Key battery removed

        • Engine switch touched with key and pressed
      3. A019O8SE01

        Waveform 3 (Reference)

        Item Content
        Tester Connection F58-28 (VC5) - F58-36 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition

        • Engine switch off

        • Key not in cabin

        • Engine switch pressed within 30 seconds

  3. CHECK ID CODE BOX (IMMOBILISER CODE ECU)


    1. Disconnect the F45 ID code box (immobiliser code ECU) connector.

      A019MAME16

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F45-1 (+B) - F45-8 (GND) B - W-B +B power supply Always 11 to 14 V
      F45-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the F45 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
      F45-5 (EFII) - F45-8 (GND) LG - W-B ECM input signal Engine switch off 11 to 14 V
      F45-5 (EFII) - F45-8 (GND) LG - W-B ECM input signal Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected

      Pulse generation

      (See waveform 1)
      F45-6 (EFIO) - F45-8 (GND) P - W-B ECM output signal Engine switch off Below 1 V
      F45-6 (EFIO) - F45-8 (GND) P - W-B ECM output signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)

      • If the result is not as specified, the ID code box (immobiliser code ECU) may have a malfunction.

    5. Inspect using an oscilloscope.


      1. A019OO9E01

        Waveform 1 (Reference)

        Item Content
        Tester Connection F45-5 (EFII) - F45-8 (GND)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected
      2. A019M56E01

        Waveform 2 (Reference)

        Item Content
        Tester Connection F45-6 (EFIO) - F45-8 (GND)
        Tool Setting 10 V/DIV., 100 ms./DIV.
        Condition Engine switch on (IG)

  4. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)


    1. Disconnect the F37 steering lock ECU (steering lock actuator assembly) connector.

      A019N28E30

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

      Tech Tips

      Measure the values on the wire harness side with connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F37-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F37-6 (IG2) - Body ground B - Body ground Ignition power supply Engine switch off Below 1 V
      F37-6 (IG2) - Body ground B - Body ground Ignition power supply Engine switch on (IG) 11 to 14 V
      F37-7 (B) - 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 in the wire harness.

  5. CHECK TELEPHONE TRANSCEIVER ASSEMBLY (w/ BLOCKING SYSTEM)

    A019OI5E09

    1. Disconnect the G56 telephone transceiver assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G56-6 (IG2) - G56-9 (E) R - W-B Ignition power supply Engine switch on (IG) 9 to 16 V
      G56-12 (+B) - G56-9 (E) W - W-B +B power supply Always 9 to 16 V
      G56-9 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the G56 telephone transceiver assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G56-1 (BLK1) - G56-9 (E) LG - W-B ID code box (immobiliser code ECU) communication input Engine switch off 11 to 14 V
      G56-1 (BLK1) - G56-9 (E) LG - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)
      G56-2 (BLK4) - G56-9 (E) P - W-B ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V
      G56-2 (BLK4) - G56-9 (E) P - W-B ID code box (immobiliser code ECU) communication output Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      Pulse generation

      (See waveform 2)
      G56-7 (BLK2) - G56-9 (E) R - W-B ECM communication output Engine switch off Below 1 V
      G56-7 (BLK2) - G56-9 (E) R - W-B ECM communication output Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)
      G56-8 (BLK3) - G56-9 (E) V - W-B ECM communication input Engine switch off Below 1 V
      G56-8 (BLK3) - G56-9 (E) V - W-B ECM communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      Pulse generation

      (See waveform 2)

      • If the result is not as specified, the telephone transceiver assembly may have a malfunction.

    5. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A019M78E01
        Text in Illustration
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection

        • G56-1 (BLK1) - G56-9 (E)

        • G56-7 (BLK2) - G56-9 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

      2. Waveform 2 (Reference)

        A019ME7E01
        Text in Illustration
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection

        • G56-2 (BLK4) - G56-9 (E)

        • G56-8 (BLK3) - G56-9 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected

  6. CHECK ECM (for 2GR-FE)

    Tech Tips

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

    A019O79E06
    Tester Connection Wiring Color Terminal Description Condition Specified Condition
    D1-81 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    A43-29 (IMO) - D1-81 (E1) R - BR Certification ECU (smart key ECU assembly) output signal Engine switch off 11 to 14 V
    A43-29 (IMO) - D1-81 (E1) R - BR Certification ECU (smart key ECU assembly) output signal Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected

    Pulse generation

    (See waveform 1)
    A43-40 (IMI) - D1-81 (E1) P - BR Certification ECU (smart key ECU assembly) input signal Engine switch off Below 1 V
    A43-40 (IMI) - D1-81 (E1) P - BR ID code box (immobiliser code ECU) input signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)

    1. Waveform:


      1. A019OO9E01

        Waveform 1 (Reference)

        Item Content
        Tester Connection A43-29 (IMO) - D1-81 (E1)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected
      2. A019M56E01

        Waveform 2 (Reference)

        Item Content
        Tester Connection A43-40 (IMI) - D1-81 (E1)
        Tool Setting 5 V/DIV., 100 ms./DIV.
        Condition Engine switch on (IG)

  7. CHECK ECM (for 1AR-FE)

    Tech Tips

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

    A019O79E25
    Tester Connection Wiring Color Terminal Description Condition Specified Condition
    D44-104 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    A70-10 (IMO) - D44-104 (E1) R - BR Certification ECU (smart key ECU assembly) output signal Engine switch off 11 to 14 V
    A70-10 (IMO) - D44-104 (E1) R - BR Certification ECU (smart key ECU assembly) output signal Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected

    Pulse generation

    (See waveform 1)
    A70-11 (IMI) - D44-104 (E1) P - BR Certification ECU (smart key ECU assembly) input signal Engine switch off Below 1 V
    A70-11 (IMI) - D44-104 (E1) P - BR ID code box (immobiliser code ECU) input signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)

    1. Waveform:


      1. A019OO9E01

        Waveform 1 (Reference)

        Item Content
        Tester Connection A70-10 (IMO) - D44-104 (E1)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after engine switch first turned on (IG) after battery disconnected and connected
      2. A019M56E01

        Waveform 2 (Reference)

        Item Content
        Tester Connection A70-11 (IMI) - D44-104 (E1)
        Tool Setting 5 V/DIV., 100 ms./DIV.
        Condition Engine switch on (IG)

  8. MULTI-MEDIA MODULE RECEIVER ASSEMBLY (w/ Navigation System)


    1. Disconnect the G36 multi-media module receiver assembly connector.

      A019MAGE03

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

      Tech Tips

      Measure the values on the wire harness side with connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G36-17 (+B1) - Body ground V - Body ground Battery Always 11 to 14 V
      G36-12 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the G36 multi-media module receiver assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G36-37 (SEUC) - Body ground P - Body ground Security indicator light signal

      • Engine switch on (IG)

      • Security indicator light off

      		 Below 2 V
      G36-37 (SEUC) - Body ground P - Body ground Security indicator light signal

      • Engine switch off

      • Security indicator light blinks

      		 Pulse generation

      If the result is not as specified, the multi-media module receiver assembly may have a malfunction.

  9. RADIO RECEIVER ASSEMBLY (w/ Audio and Visual System (w/ Multi-display))


    1. Disconnect the G37 radio receiver assembly connectors.

      A019KZZE02

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

      Tech Tips

      Measure the values on the wire harness side with connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G37-1 (+B1) - Body ground V - Body ground Battery Always 11 to 14 V
      G37-20 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the G37 radio receiver assembly connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G38-20 (SEUC) - Body ground P - Body ground Security indicator light signal

      • Engine switch on (IG)

      • Security indicator light off

      		 Below 2 V
      G38-20 (SEUC) - Body ground P - Body ground Security indicator light signal

      • Engine switch off

      • Security indicator light blinks

      		 Pulse generation

      • If the result is not as specified, the radio receiver assembly may have a malfunction.

  10. RADIO RECEIVER ASSEMBLY (w/ Audio and Visual System (w/o Multi-display))


    1. Disconnect the G7 and G8 radio receiver assembly connectors.

      A019O7HE04

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

      Tech Tips

      Measure the values on the wire harness side with connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G7-1 (B) - Body ground V - Body ground Battery Always 11 to 14 V
      G8-9 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

      • If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the G7 and G8 radio receiver assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G8-7 (LP) - Body ground P - Body ground Security indicator light signal

      • Engine switch on (IG)

      • Security indicator light off

      		 Below 2 V
      G8-7 (LP) - Body ground P - Body ground Security indicator light signal

      • Engine switch off

      • Security indicator light blinks

      		 Pulse generation

      If the result is not as specified, the radio receiver assembly may have a malfunction.