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


  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01MRXYN89

    1. Disconnect the K137 certification ECU (smart key ECU assembly) connector.

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

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      K137-11 (E) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      K137-10 (+B) - K137-11 (E) Input BE - BR Power supply Power switch off 11 to 14 V -

    3. Reconnect the K137 certification ECU (smart key ECU assembly) connector.

    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
      K137-4 (CLG1) - K137-11 (E) Output

      G*1 - BR

      GR*2 - 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. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought inside detection area*3)

      Pulse generation

      (See waveform 1)

      		 Overhead + Driver Side (key diagnostic mode)

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*3)

      Pulse generation

      (See waveform 2)
      K137-4 (CLG1) - K137-11 (E) Input

      G*1 - BR

      GR*2 - BR

      Input to driver door lock sensor

      (front door outside handle assembly (for driver side) lock sensor on signal is sent to the certification ECU (smart key ECU assembly))

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*3)

      5. Driver door lock sensor touched

      Pulse generation

      (See waveform 9)

      		 D-Door Trigger Switch
      K137-4 (CLG1) - K137-11 (E) Input

      G*1 - BR

      GR*2 - BR

      Input to driver door unlock sensor

      (when system is in unlock standby mode and unlock sensor is touched, door electrical key antenna sends unlock sensor input signal (sensing) to certification ECU (smart key ECU assembly))

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors locked

      4. Electrical key transmitter sub-assembly not near the vehicle

      5. Driver door unlock sensor touched

      Pulse generation

      (See waveform 10)

      		 D-Door Touch Sensor
      K137-3 (CG1B) - K137-11 (E) Output

      B*1 - BR

      R*2 - BR

      		 Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal)

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought inside detection area*3)

      Pulse generation

      (See waveform 1)

      		 Overhead + Driver Side (key diagnostic mode)

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*3)

      Pulse generation

      (See waveform 2)
      K137-2 (CLG2) - K137-11 (E) Output

      GR*1 - BR

      G*2 - 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. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought inside detection area*3)

      Pulse generation

      (See waveform 1)

      		 Overhead + Passenger Side (key diagnostic mode)

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*3)

      Pulse generation

      (See waveform 2)
      K137-2 (CLG2) - K137-11 (E) Input

      GR*1 - BR

      G*2 - BR

      Input to front passenger door lock sensor

      (front door outside handle assembly (for front passenger door) lock sensor on signal is sent to the certification ECU (smart key ECU assembly))

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*3)

      5. Front passenger door lock sensor touched

      Pulse generation

      (See waveform 9)

      		 P-Door Trigger Switch
      K137-2 (CLG2) - K137-11 (E) Input

      GR*1 - BR

      G*2 - BR

      Input to front passenger door unlock sensor

      (when system is in unlock standby mode and unlock sensor is touched, door electrical key antenna sends unlock sensor input signal (sensing) to certification ECU (smart key ECU assembly))

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors locked

      4. Electrical key transmitter sub-assembly not near the vehicle

      5. Front passenger door unlock sensor touched

      Pulse generation

      (See waveform 10)

      		 P-Door Touch Sensor
      K137-1 (CG2B) - K137-11 (E) Output

      R*1 - BR

      B*2 - BR

      		 Output to front passenger door electrical key antenna (terminal on opposite side of component from CLG2 output terminal)

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought inside detection area*3)

      Pulse generation

      (See waveform 1)

      		 Overhead + Passenger Side (key diagnostic mode)

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*3)

      Pulse generation

      (See waveform 2)
      K137-21 (CLG5) - K137-11 (E) Output B - BR Output to No. 2 indoor electrical key antenna assembly (front floor)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Within 30 seconds of closing any door using the door outside handle

      Pulse generation

      (See waveform 3)

      		 Overhead + Front Room (key diagnostic mode)
      K137-20 (CG5B) - K137-11 (E) Output V - BR Output to No. 2 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Within 30 seconds of closing any door using the door outside handle

      Pulse generation

      (See waveform 3)

      		 Overhead + Front Room (key diagnostic mode)
      K136-5 (TSW5) - K137-11 (E) Input G - BR Luggage electrical key switch signal input Luggage electrical key switch off → on

      Pulse generation

      (See waveform 6)

      		 Tr/B-Door Unlock SW
      K136-15 (CLG6) - K137-11 (E) Output LG - BR Output to indoor electrical key antenna (rear floor)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Within 30 seconds of closing any door using the door outside handle

      Pulse generation

      (See waveform 3)

      		 Overhead + Rear Room (key diagnostic mode)
      K136-14 (CG6B) - K137-11 (E) Output BE - BR Output to indoor electrical key antenna (rear floor) (terminal on opposite side of component from CLG6 output terminal)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Within 30 seconds of closing any door using the door outside handle

      Pulse generation

      (See waveform 3)

      		 Overhead + Rear Room (key diagnostic mode)
      K136-4 (CLG7) - K137-11 (E) Output SB - BR Output to No. 1 indoor electrical key antenna assembly (inside luggage)

      Procedure:


      1. Door is closed

      2. Power switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Driver door lock sensor touched

      Pulse generation

      (See waveform 4)

      		 Luggage + Luggage (inside) (key diagnostic mode)
      K136-3 (CG7B) - K137-11 (E) Output P - BR Output to No. 1 indoor electrical key antenna assembly (inside luggage) (terminal on opposite side of component from CLG7 output terminal)

      Procedure:


      1. Door is closed

      2. Power switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Driver door lock sensor touched

      Pulse generation

      (See waveform 4)

      		 Luggage + Luggage (inside) (key diagnostic mode)
      K136-18 (RCO) - K137-11 (E) Output LG - 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. Power switch off

      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

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

      Pulse generation

      (See waveform 7)

      		 -
      K136-19 (CSEL) - K137-11 (E) Output B - BR Communication channel switching circuit

      Procedure:


      1. Power switch off

      2. All doors closed

      		 Below 1 V → pulse generation -
      K136-20 (RDAM) - K137-11 (E) Input R - BR

      Door control receiver verifies data received from electrical key transmitter sub-assembly.

      Door control receiver sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Door control receiver intermittently grounds 12 V signal from certification ECU (smart key ECU assembly)).

      Proceed:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 8)

      		 -
      K136-2 (CLG8) - K137-11 (E) Output B - BR Output to electrical key antenna (outside luggage compartment)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. Luggage electrical key switch off → on

      Pulse generation

      (See waveform 5)

      		 Overhead + Luggage (key diagnostic mode)
      K136-1 (CG8B) - K137-11 (E) Output W - BR Output to electrical key antenna (outside luggage compartment) (terminal on opposite side of component from CLG8 output terminal)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. Luggage electrical key switch off → on

      Pulse generation

      (See waveform 5)

      		 Overhead + Luggage (key diagnostic mode)

      • *1: for LHD

      • *2: for RHD

      • *3: For details about the entry function detection area, refer to Operation Check.

        Click here

    5. A01MT8DN01

      Using an oscilloscope, check waveform 1.

      Note

      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

      K137-4 (CLG1) - K137-11 (E)

      K137-3 (CG1B) - K137-11 (E)

      K137-2 (CLG2) - K137-11 (E)

      K137-1 (CG2B) - K137-11 (E)
      Tool Setting 5 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought inside detection area*)

      • *: For details about the entry function detection area, refer to Operation Check.

        Click here

    6. A01MSASN01

      Using an oscilloscope, check waveform 2.

      Note

      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

      K137-4 (CLG1) - K137-11 (E)

      K137-3 (CG1B) - K137-11 (E)

      K137-2 (CLG2) - K137-11 (E)

      K137-1 (CG2B) - K137-11 (E)
      Tool Setting 5 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*)

      • *: For details about the entry function detection area, refer to Operation Check.

        Click here

    7. A01MRUZC02
      *a For 30 seconds after closing any door using the door outside handle
      *b 30 seconds or more have elapsed after closing any door using the door outside handle

      Using an oscilloscope, check waveform 3.

      Note

      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

      K137-21 (CLG5) - K137-11 (E)

      K137-20 (CG5B) - K137-11 (E)

      K136-15 (CLG6) - K137-11 (E)

      K136-14 (CG6B) - K137-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Within 30 seconds of closing any door using the door outside handle
    8. A01MRM8C02
      *a Driver door lock sensor not touched
      *b Driver door lock sensor touched

      Using an oscilloscope, check waveform 4.

      Note

      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

      K136-4 (CLG7) - K137-11 (E)

      K136-3 (CG7B) - K137-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Door is closed

      2. Power switch off

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Driver door lock sensor touched
    9. A01MT1BN01

      Using an oscilloscope, check waveform 5.

      Note

      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

      K136-2 (CLG8) - K137-11 (E)

      K136-1 (CG8B) - K137-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. Luggage electrical key switch off → on
    10. A01MTZAC09
      *a Checking for switch on signal at short intervals

      Using an oscilloscope, check waveform 6.

      Note

      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 K136-5 (TSW5) - K137-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Luggage electrical key switch off → on
    11. A01MRV2C12
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 7.

      Note

      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 K136-18 (RCO) - K137-11 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
    12. A01MSGQC12
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 8.

      Note

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

      Waveform 8 (Reference)
      Item Content
      Tester Connection K136-20 (RDAM) - K137-11 (E)
      Tool Setting 5 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
    13. A01MSNLC02
      *a Lock sensor not touched
      *b Lock sensor touched

      Using an oscilloscope, check waveform 9.

      Note

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

      Waveform 9 (Reference)
      Item Content
      Tester Connection

      K137-4 (CLG1) - K137-11 (E)

      K137-2 (CLG2) - K137-11 (E)
      Tool Setting 5 V/DIV., 40 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*)

      5. Lock sensor not touched → touched

      • *: For details about the entry function detection area, refer to Operation Check.

        Click here

    14. A01MS63C02
      *a Unlock sensor not touched
      *b Unlock sensor touched

      Using an oscilloscope, check waveform 10.

      Note

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

      Waveform 10 (Reference)
      Item Content
      Tester Connection

      K137-4 (CLG1) - K137-11 (E)

      K137-2 (CLG2) - K137-11 (E)
      Tool Setting 5 V/DIV., 40 ms/DIV.
      Condition

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors locked

      4. Electrical key transmitter sub-assembly not near the vehicle

      5. Unlock sensor not touched → touched

  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B003YD6N18

    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      MB-11 (GND1) - Body ground - - Ground Always Below 1 Ω -
      MB-31 (BECU) - Body ground Input - Auxiliary battery power supply (for CPU) Power switch off 11 to 14 V -
      K2-6 (FLCY) - Body ground Input V - Body ground Front door LH courtesy light switch input Front door LH closed → open 10 kΩ or higher → Below 1 Ω FL Door Courtesy SW
      K2-27 (FRCY) - Body ground Input V - Body ground Front door RH courtesy light switch input Front door RH closed → open 10 kΩ or higher → Below 1 Ω FR Door Courtesy SW
      MB-13 (LCTY) - Body ground Input - Rear door LH courtesy light switch input Rear door LH closed → open 10 kΩ or higher → Below 1 Ω RL Door Courtesy SW
      MB-2 (RCTY) - Body ground Input - Rear door RH courtesy light switch input Rear door RH closed → open 10 kΩ or higher → Below 1 Ω RR Door Courtesy SW

    3. Install the main body ECU (multiplex network 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.

      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      4B-26 (LSFL) - Body ground Input G - Body ground Front door LH unlock detection switch input Front door LH locked → unlocked

      Pulse generation

      (See waveform 1)

      		 FL Door Lock Pos
      4B-27 (LSFR) - Body ground Input B - Body ground Front door RH unlock detection switch input Front door RH locked → unlocked

      Pulse generation

      (See waveform 1)

      		 FR Door Lock Pos
      4B-23 (LSWL) - Body ground Input L - Body ground Rear door LH unlock detection switch input Rear door LH locked → unlocked

      Pulse generation

      (See waveform 1)

      		 RL-Door Lock Pos SW
      K1-2 (LSWR) - Body ground Input W - Body ground Rear door RH unlock detection switch input Rear door RH locked → unlocked

      Pulse generation

      (See waveform 1)

      		 RR-Door Lock Pos SW
      K2-6 (FLCY) - Body ground Input V - Body ground Front door LH courtesy light switch input Front door LH closed → open

      Pulse generation

      (See waveform 2)

      		 FL Door Courtesy SW
      K2-27 (FRCY) - Body ground Input V - Body ground Front door RH courtesy light switch input Front door RH closed → open

      Pulse generation

      (See waveform 2)

      		 FR Door Courtesy SW
      4D-25 (LCTY) - Body ground Input BE - Body ground Rear door LH courtesy light switch input Rear door LH closed → open

      Pulse generation

      (See waveform 2)

      		 RL Door Courtesy SW
      4B-17 (RCTY) - Body ground Input BE - Body ground Rear door RH courtesy light switch input Rear door RH closed → open

      Pulse generation

      (See waveform 2)

      		 RR Door Courtesy SW
      4D-16 (LGCY) - Body ground Input G - Body ground Luggage door courtesy light switch input Luggage compartment door closed → opened

      Pulse generation

      (See waveform 2)

      		 Luggage Courtesy SW
      4C-28 (BZR) - Body ground Output G - Body ground Wireless buzzer signal output

      Procedure:


      1. Power switch off

      2. All doors closed

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

      		 Below 1 V → pulse generation -
    5. A01MRWMC02
      *a Door locked
      *b Door unlocked

      Using an oscilloscope, check waveform 1.

      Note

      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

      4B-26 (LSFL) - Body ground

      4B-27 (LSFR) - Body ground

      4B-23 (LSWL) - Body ground

      K1-2 (LSWR) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Door locked → unlocked
    6. A01MRWMC03
      *a Door closed
      *b Door open

      Using an oscilloscope, check waveform 2.

      Note

      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

      K2-6 (FLCY) - Body ground

      K2-27 (FRCY) - Body ground

      4D-25 (LCTY) - Body ground

      4B-17 (RCTY) - Body ground

      4D-16 (LGCY) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Door closed → opened