SMART ENTRY AND START SYSTEM(for Entry Function) TERMINALS OF ECU


  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B003JL4E01

    1. Disconnect the G16 and G17 certification ECU (smart key ECU assembly) connectors.

    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 the connector disconnected.

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      G16-10 (E) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      G16-1 (+B) - G16-10 (E) Input P - BR +B power supply Always 11 to 14 V -
      G17-33 (CUTB) - G16-10 (E) Input W - BR Dark current cut pin* Always 11 to 14 V -

      • *: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode.

    3. Connect the G16 and G17 certification ECU (smart key ECU assembly) connectors.

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

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      G16-21 (ACCD) - G16-10 (E) Output B - BR ACC signal Engine switch off → Engine switch on (ACC) 1 V or less → 8.5 V or higher -
      G16-20 (IG1D) - G16-10 (E) Output L - BR IG1 signal Engine switch on (ACC) → Engine switch on (IG) 1 V or less → 9 V or higher -
      G17-9 (CLG5) - G16-10 (E) Input/Output R - BR

      Output to driver door electrical key antenna

      (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)

      Procedure:


      1. Engine switch off

      2. All doors closed

      Not pulse generation Overhead + Driver Side (key diagnostic mode)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Driver Door).

      Pulse generation (See waveform 1)
      G17-25 (CG5B) - G16-10 (E) Input/Output W - BR

      Output to driver door electrical key antenna

      (terminal on opposite side of component from CLG5 output terminal)

      Procedure:


      1. Engine switch off

      2. All doors closed

      Not pulse generation Overhead + Driver Side (key diagnostic mode)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Driver Door).

      Pulse generation (See waveform 1)
      G17-26 (CLG6) - G16-10 (E) Input/Output Y - BR

      Output to front passenger door electrical key antenna

      (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)

      Procedure:


      1. Engine switch off

      2. All doors closed

      Not pulse generation Overhead + Passenger Side (key diagnostic mode)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Front Passenger Door).

      Pulse generation (See waveform 2)
      G17-27 (CG6B) - G16-10 (E) Input/Output B - BR

      Output to front passenger door electrical key antenna

      (terminal on opposite side of component from CLG6 output terminal)

      Procedure:


      1. Engine switch off

      2. All doors closed

      Not pulse generation Overhead + Passenger Side (key diagnostic mode)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Front Passenger Door).

      Pulse generation (See waveform 2)
      G17-8 (CLG8) - G16-10 (E) Input/Output LG - BR

      Output to No. 2 indoor electrical key antenna assembly (back door)

      (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)

      Procedure:


      1. Engine switch off

      2. All doors closed

      Not pulse generation Overhead + Back Door (key diagnostic mode)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Back door opener switch assembly off → on.

      Pulse generation (See waveform 3)
      G17-24 (CG8B) - G16-10 (E) Input/Output P - BR

      Output to No. 2 indoor electrical key antenna assembly (back door)

      (terminal on opposite side of component from CLG8 output terminal)

      Procedure:


      1. Engine switch off

      2. All doors closed

      Not pulse generation Overhead + Back Door (key diagnostic mode)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Back door opener switch assembly off → on.

      Pulse generation (See waveform 3)
      G16-4 (TSW1) - G16-10 (E) Input

      P - BR*1

      L - BR*2

      Driver door trigger switch signal input sends signals from trigger switch on front door outside handle assembly (for Driver Door) to certification ECU (smart key ECU assembly).

      Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 20 ms. from terminal TSW. When trigger switch is pressed, the pulse is grounded.

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Driver door trigger switch not pressed → pressed

      9.5 to 16 V → Below 1.5 V D-Door Trigger Switch
      G16-12 (TSW2) - G16-10 (E) Input

      G - BR*1

      R - BR*2

      Passenger door trigger switch signal input sends signals from trigger switch on front door outside handle assembly (for Front Passenger Door) to certification ECU (smart key ECU assembly).

      Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 20 ms. from terminal TSW. When trigger switch is pressed, the pulse is grounded.

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Passenger door trigger switch not pressed → pressed

      9.5 to 16 V → Below 1.5 V P-Door Trigger Switch
      G16-14 (TSW5) - G16-10 (E) Input V - BR Back door opener switch assembly (unlock switch) signal input Back door opener switch assembly (open switch) off → on 4.5 V or higher → Below 1.5 V Tr/B-Door Unlock SW
      G16-23 (TSW6) - G16-10 (E) Input BE - BR Back door opener switch assembly (lock switch) signal input Back door opener switch assembly (lock switch) off → on 4.5 V or higher → Below 1.5 V Tr/B-Door Lock SW
      G17-31 (CLG1) - G16-10 (E) Input/Output Y - BR Output to No. 1 indoor electrical key antenna assembly (front floor)

      Procedure:


      1. All doors closed

      2. Engine switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Door is open

      5. Door is closed

      6. Within 30 seconds

      Pulse generation (See waveform 4) Overhead + Room (key diagnostic mode)
      G17-30 (CG1B) - G16-10 (E) Input/Output L - BR Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG1 output terminal)

      Procedure:


      1. All doors closed

      2. Engine switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Door is open

      5. Door is closed

      6. Within 30 seconds

      Pulse generation (See waveform 4) Overhead + Room (key diagnostic mode)
      G17-6 (CLG2) - G16-10 (E) Input/Output W - BR Output to No. 2 indoor electrical key antenna assembly (rear floor)

      Procedure:


      1. All doors closed

      2. Engine switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Door is open

      5. Door is closed

      6. Within 30 seconds

      Pulse generation (See waveform 4) Overhead + Room2 (key diagnostic mode)
      G17-23 (CG2B) - G16-10 (E) Input/Output B - BR Output to No. 2 indoor electrical key antenna assembly (rear floor) (terminal on opposite side of component from CLG2 output terminal)

      Procedure:


      1. All doors closed

      2. Engine switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Door is open

      5. Door is closed

      6. Within 30 seconds

      Pulse generation (See waveform 4) Overhead + Room2 (key diagnostic mode)
      G17-28 (CLG7) - G16-10 (E) Input/Output R - BR Output to No. 2 indoor electrical key antenna assembly (inside luggage)

      Procedure:


      1. All doors closed

      2. Engine switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Door is open

      5. Door is closed

      6. Within 30 seconds

      Pulse generation (See waveform 4) Overhead + Room3 (key diagnostic mode)
      G17-29 (CG7B) - G16-10 (E) Input/Output G - BR Output to No. 2 indoor electrical key antenna assembly (inside luggage) (terminal on opposite side of component from CLG7 output terminal)

      Procedure:


      1. All doors closed

      2. Engine switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Door is open

      5. Door is closed

      6. Within 30 seconds

      Pulse generation (See waveform 4) Overhead + Room3 (key diagnostic mode)
      G16-9 (LSWP) - G16-10 (E) Input L - BR Except driver door unlock detection switch input

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Lock button of electrical key transmitter sub-assembly not pressed

      Below 1 V -

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Lock button of electrical key transmitter sub-assembly pressed

      8.5 V or higher
      G17-3 (RCO) - G16-10 (E) Output G - BR

      Output to door control receiver

      (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation (See waveform 5) -
      G17-22 (RDAS) - G16-10 (E) Input L - BR Door control receiver verifies data received from electrical key transmitter sub-assembly. Door control receiver sends data to ECU and intermittently grounds 12 V signal from certification ECU (smart key ECU assembly).

      Proceed:


      1. Engine switch off

      2. All doors locked

      3. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation (See waveform 6) -
      G17-21 (CSEL) - G16-10 (E) Output P - BR Communication channel switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      Pulse generation (See waveform 7) Key diagnostic mode
      G16-2 (BZR) - G16-10 (E) Output SB - BR Wireless door lock buzzer signal Wireless door lock buzzer on Pulse generation -
      G17-13 (RDA3) - G16-10 (E) Output W - BR Signal output to instrument panel junction block assembly (body ECU)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Lock button of electrical key transmitter sub-assembly not pressed

      11 to 14 V -

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Lock button of electrical key transmitter sub-assembly pressed

      Pulse generation
      G17-36 (PRG3) - G16-10 (E) Input V - BR Signal input from instrument panel junction block assembly (body ECU)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch not pressed

      11 to 14 V -

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch pressed

      Pulse generation

      *1: for LHD

      *2: for RHD

    5. B003KBIC03
      *a Trigger switch ON

      Using an oscilloscope, check waveform 1.

      Tech Tips

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

      Waveform 1 (Reference)
      Item Content
      Tester Connection
      • G17-9 (CLG5) - G16-10 (E)

      • G17-25 (CG5B) - G16-10 (E)

      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Driver Door).

    6. B003KBIC03
      *a Trigger switch ON

      Using an oscilloscope, check waveform 2.

      Tech Tips

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

      Waveform 2 (Reference)
      Item Content
      Tester Connection
      • G17-26 (CLG6) - G16-10 (E)

      • G17-27 (CG6B) - G16-10 (E)

      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Front Passenger Door).

    7. B003KBIC03
      *a Back door opener switch assembly ON

      Using an oscilloscope, check waveform 3.

      Tech Tips

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

      Waveform 3 (Reference)
      Item Content
      Tester Connection
      • G17-8 (CLG8) - G16-10 (E)

      • G17-24 (CG8B) - G16-10 (E)

      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Back door opener switch assembly off → on

    8. B003KS7C13
      *a Door open
      *b After approximately 30 seconds from when the door is closed

      Using an oscilloscope, check waveform 4.

      Tech Tips

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

      Waveform 4 (Reference)
      Item Content
      Tester Connection
      • G17-31 (CLG1) - G16-10 (E)

      • G17-30 (CG1B) - G16-10 (E)

      • G17-6 (CLG2) - G16-10 (E)

      • G17-23 (CG2B) - G16-10 (E)

      • G17-28 (CLG7) - G16-10 (E)

      • G17-29 (CG7B) - G16-10 (E)

      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition

      Procedure:


      1. All doors closed

      2. Engine switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Door is open

      5. Door is closed

      6. Within 30 seconds

    9. B003OQKC19
      *a Before lock or unlock button of electrical key transmitter sub-assembly pressed
      *b After lock or unlock button of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 5.

      Tech Tips

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

      Waveform 5 (Reference)
      Item Content
      Tester Connection G17-3 (RCO) - G16-10 (E)
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

    10. B003LK4C18
      *a Before lock or unlock button of electrical key transmitter sub-assembly pressed
      *b After lock or unlock button of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 6.

      Tech Tips

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

      Waveform 6 (Reference)
      Item Content
      Tester Connection G17-22 (RDAS) - G16-10 (E)
      Tool Setting 5 V/DIV., 500 ms./DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors locked

      3. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

    11. B003OK2E01

      Using an oscilloscope, check waveform 7.

      Tech Tips

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

      Waveform 7 (Reference)
      Item Content
      Tester Connection G17-21 (CSEL) - G16-10 (E)
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors closed

  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (BODY ECU)

    B003NLDC18
    *A for LHD *B for RHD
    *1 Instrument Panel Junction Block Assembly - -
    B003Q15C01
    *1 Body ECU - -

    1. Remove the body ECU from the instrument panel junction block assembly.


    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 the connector disconnected.

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition
      A-1 (GND) - Body ground - - Ground Always Below 1 Ω
      A-6 (BECU) - Body ground Input - Battery power supply (for CPU) Always 11 to 14 V
      A-7 (IG) - Body ground Input - Engine switch power supply Engine switch on (IG) → off 11 to 14 V → Below 1 V
    3. Install the body ECU to the instrument panel junction block assembly.


    4. 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
      2N-2 (ACT+) - Body ground Output

      LG - Body ground*1

      LA-B - Body ground*2

      Door lock motor lock drive output (all doors) Door control switch (power window regulator master switch assembly) or driver door key cylinder off Below 1 V
      Door control switch (power window regulator master switch assembly) or driver door key cylinder locked 11 to 14 V
      2N-3 (ACT-) - Body ground Output

      GR - Body ground*1

      LA-W - Body ground*2

      Door lock motor unlock drive output (all doors)*3

      Door lock motor unlock drive output (except driver door)*4

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off Below 1 V
      Door control switch (power window regulator master switch assembly) or driver door key cylinder unlocked 11 to 14 V
      2J-4 (ACTD) - Body ground*4 Output Y - Body ground Door lock motor unlock drive output (driver door) Door control switch (power window regulator master switch assembly) or driver door key cylinder off Below 1 V
      Door control switch (power window regulator master switch assembly) or driver door key cylinder unlocked 11 to 14 V
      2Q-1 (DCTY) - Body ground Input B - Body ground Front door (for Driver Door) courtesy light switch input Front door (for Driver Door) open Below 1 V
      Front door (for Driver Door) closed Pulse generation
      2Q-2 (ACTY) - Body ground Input Y - Body ground All door courtesy light switches input except driver door One or more doors are open except driver door Below 1 V
      All doors are closed except driver door Pulse generation
      2L-4 (DCTY) - Body ground Input R - Body ground Front door (for Driver Door) courtesy light switch input Front door (for Driver Door) open Below 1 V
      Front door (for Driver Door) closed Pulse generation
      G33-2 (LSWP) - Body ground Input Y - Body ground Except front door (for Driver Door) unlock detection switch input Except front door (for Driver Door) unlocked Below 1 V
      Except front door (for Driver Door) locked Pulse generation
      G33-6 (HAZ) - Body ground Output SB - Body ground Hazard warning signal output Answer-back off 11 to 14 V
      Answer-back on Below 1 V
      G33-9 (PRG) - Body ground Output V - Body ground Signal output to certification ECU (smart key ECU assembly)

        Procedure:

      1. Engine switch off

      2. All doors locked

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch not pressed

      11 to 14 V

        Procedure:

      1. Engine switch off

      2. All doors locked

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch pressed

      Pulse generation
      G33-14 (PCTY) - Body ground Input LG - Body ground Except front door (for Driver Door) courtesy light switch input Except front door (for Driver Door) open Below 1 V
      Except front door (for Driver Door) closed Pulse generation
      G33-15 (LSWD) - Body ground Input R - Body ground Front door (for Driver Door) unlock detection switch input Front door (for Driver Door) unlocked Below 1 V
      Front door (for Driver Door) locked Pulse generation
      G33-16 (RDA) - Body ground Input W - Body ground Signal input from certification ECU (smart key ECU assembly)

        Procedure:

      1. Engine switch off

      2. All doors locked

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch not pressed

      11 to 14 V

        Procedure:

      1. Engine switch off

      2. All doors locked

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch pressed

      Pulse generation

      *1: w/ Door Control Battery

      *2: w/o Door Control Battery

      *3: w/o Double Locking

      *4: w/ Double Locking

  3. CHECK COMBINATION METER ASSEMBLY

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