ENTRY AND START SYSTEM(for Start Function) Engine does not Start

DESCRIPTION

When the electrical key transmitter sub-assembly is in the vehicle and the engine switch is pressed, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. In addition, when the shift lever is in P*1 or N*1 and the brake pedal*1 or clutch pedal*2 is depressed, the engine can be started by pressing the engine switch.


Tech Tips


  • The engine can be started up with the shift lever in N only when the steering lock is unlocked*1.

  • If the engine switch is pressed when the power source mode is on (IG) and the shift lever is in a position other than P, the power source mode changes to on (ACC). If the shift lever is then moved to P and the engine switch is pressed while stepping on the brake pedal, the power source mode changes to off*1.

  • When the battery cable is disconnected and reconnected, the power source returns to the mode it was in before the battery cable was disconnected.


Related Data List and Active Test Items
Problem Symptom Data List Item Active Test Item
Engine does not start

    Power Source Control

  • Shift P Signal

  • Steering Unlock Switch

  • Stop Light Switch1

  • Neutral SW/ Clutch SW

  • Latch Circuit

  • IG1 Relay Monitor(Outside)

  • IG1 Relay Monitor(Inside)

  • IG2 Relay Monitor(Outside)

  • IG2 Relay Monitor(Inside)

  • Starter Request Signal

  • Power Supply Condition


    Entry & Start

  • Immobiliser

  • Engine Start Request

  • S Code Check

  • L Code Check


    Starting Control

  • Starter SW

  • Shift Position P or N

  • Ignition

 -

WIRING DIAGRAM

Refer to "System Diagram" Click here.

CAUTION / NOTICE / HINT

Note


  • When using the intelligent tester with the engine switch off to troubleshoot:

    Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

  • The entry and start system uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting Click here.

  • Before replacing the certification ECU (smart key ECU assembly), steering lock actuator assembly (steering lock ECU) or ID code box (immobiliser code ECU), refer to the entry and start system (for Entry Function) Click here.

  • If the entry and start system is disabled through the customize function, enable the system before performing troubleshooting Click here.

  • If the steering lock actuator assembly (steering lock ECU) is replaced, be sure to confirm that the steering is unlocked by turning the steering wheel to the left and right before starting the engine. If the steering is locked for any reason, open and close a door with the engine switch off, and then unlock the steering by pressing the engine switch. This prevents the engine from starting while the steering is locked.

  • After completing repairs, confirm that the problem does not reoccur.

  • Inspect the fuses of circuits related to this system before performing the following inspection procedure.

Tech Tips

If the brake pedal is repeatedly depressed while the engine is stopped, the brake booster pressure is released and the force required to depress the brake pedal to illuminate the stop lights increases.*1


  • *1: for CVT

PROCEDURE


  1. CHECK BATTERY


    1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

      Tech Tips


      • It may be possible to tell whether the vehicle battery is discharged by operating the horn.

      • If the battery voltage is less than 11 V, charge or replace it.


    OK

  2. CHECK DTC (ALL)


    1. Using the intelligent tester, confirm the output of DTCs for all systems.

      OK
      No DTCs are output

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  3. CHECK WAVE ENVIRONMENT


    1. If the problem occurs in certain locations or times of day, the possibility of wave interference is high.

      Tech Tips

      Whether or not the problem is due to wave interference can be checked by holding the electrical key transmitter assembly near the door control receiver (RF band).


    NEXT

  4. CHECK ENGINE SWITCH CONDITION


    1. Get into the vehicle while carrying an electrical key transmitter assembly.

    2. Move the shift lever to P*1.


      • *1: for CVT

    3. With the brake pedal*1 or clutch pedal*2 released, check that pressing the engine switch causes the power source mode to change.


      • *1: for CVT

      • *2: for Manual Transaxle

      Result
      Result Proceed to
      Power source mode changes as follows (normal): off → on (ACC) → on (IG) → off A
      Power source mode does not change to on (IG) or on (ACC) B
      Power source mode does not change to on (IG) but does change to on (ACC) C
      Power source mode does not change to on (ACC) but does change to on (IG) D

    B

    GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG AND ACC) Click here

    C

    GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG) Click here

    D

    GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC) Click here

    A

  5. CHECK CRANKING FUNCTION


    1. Get into the vehicle while carrying the electrical key transmitter assembly.

    2. Move the shift lever to P*1.


      • *1: for CVT

    3. Depress the brake pedal*1 or clutch pedal*2.


      • *1: for CVT

      • *2: for Manual Transaxle

    4. Confirm that the entry key indicator in the combination meter assembly illuminates in green, and then press the engine switch and check that the engine cranks.

      OK
      Engine cranks
      Result
      Result Proceed to
      NG A
      OK (for 1KR-FE) B
      OK (for 1NR-FE) C
      OK (for 1ND-TV with DPF) D
      OK (for 1ND-TV without DPF) E

    B

    GO TO SFI SYSTEM (PROBLEM SYMPTOMS TABLE) Click here

    C

    GO TO SFI SYSTEM (PROBLEM SYMPTOMS TABLE) Click here

    D

    GO TO ECD SYSTEM (PROBLEM SYMPTOMS TABLE) Click here

    E

    GO TO ECD SYSTEM (PROBLEM SYMPTOMS TABLE) Click here

    A

  6. READ VALUE USING INTELLIGENT TESTER (IMMOBILISER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Entry & Start / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Immobiliser State of immobiliser system determined by certification ECU (smart key ECU assembly) / Set or Unset

      Set: Engine immobiliser set (engine start prohibited) (engine switch off)

      Unset: Engine immobiliser unset (engine start permitted) (engine switch on (ACC) or on (IG))

      • When the immobiliser cannot be unset, this item can be used to determine whether the certification ECU (smart key ECU assembly) is part of the problem.

      • The engine cannot be started when this item displays "Set"
      OK
      The Data List item changes to "Unset" when the engine switch is turned on (ACC) or on (IG).

    NG

    READ VALUE USING INTELLIGENT TESTER (S CODE CHECK) Click here

    OK

  7. CHECK COMBINATION METER ASSEMBLY (ENTRY KEY INDICATOR LIGHT)


    1. Get into the vehicle while carrying the electrical key transmitter assembly, move the shift lever to P*1, depressing the brake pedal*1 or clutch pedal*2 and check that the entry key indicator light in the combination meter assembly changes.


      • *1: for CVT

      • *2: for Manual Transaxle

      OK
      The entry key indicator light illuminates in green.

      Tech Tips

      If the entry key indicator light in the combination meter assembly illuminates green when the procedure above is performed, the P, N and brake signals*1 or clutch signal*2 can be considered to be normal.


      • *1: for CVT

      • *2: for Manual Transaxle

      Result
      Result Proceed to
      OK A
      NG (for CVT) B
      NG (for Manual Transaxle) C

    B

    READ VALUE USING INTELLIGENT TESTER (NEUTRAL SW/ CLUTCH SW, SHIFT POSITION P OR N) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (NEUTRAL SW/ CLUTCH SW) Click here

    A

  8. READ VALUE USING INTELLIGENT TESTER (STARTER SW)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Starting Control / Data List.

    5. Get into the vehicle while carrying the electrical key transmitter assembly, move the shift lever to P*1, press the engine switch while depressing the brake pedal*1 or clutch pedal*2 and confirm that the Data List item changes.


      • *1: for CVT

      • *2: for Manual Transaxle

      Starting Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Starter SW Starter activation request/OFF or ON

      OFF: Starter activation not requested

      ON: Starter activation requested

      		 When there is a malfunction, the engine cannot be cranked.
      OK
      The Data List item changes.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  9. INSPECT ST RELAY


    1. Remove the ST relay from the engine room relay block.

    2. Inspect the ST relay.



    NG

    REPLACE ST RELAY

    OK

  10. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - BODY GROUND)


    1. A01VH2HE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to certification ECU (smart key ECU assembly))

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

    2. for CVT


      1. Move the shift lever to P or N

    3. for Manual Transaxle


      1. Depress the clutch pedal

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F65-5 (STAR) - Body ground 20°C (68°F) 93.75 to 136.36 Ω
      F65-7 (STA) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT STARTER ASSEMBLY


    1. for 1KR-FE


      1. Inspect the starter assembly.


        • for Cold Area Specification Vehicles Click here

        • except Cold Area Specification Vehicles Click here

    2. for 1NR-FE


      1. Inspect the starter assembly.


        • for Cold Area Specification Vehicles Click here

        • except Cold Area Specification Vehicles Click here

    3. for 1ND-TV


      1. Inspect the starter assembly


        Result
        Result Proceed to
        OK A
        NG (for 1KR-FE) B
        NG (for 1NR-FE) C
        NG (for 1ND-TV) D

    B

    REPLACE STARTER ASSEMBLY Click here

    C

    REPLACE STARTER ASSEMBLY Click here

    D

    REPLACE STARTER ASSEMBLY Click here

    A

  12. CHECK HARNESS AND CONNECTOR (BATTERY - STARTER ASSEMBLY AND ENGINE ROOM RELAY BLOCK)


    1. Remove the starter assembly from the vehicle to perform an inspection.

    2. Remove the ST relay from the engine room relay block.

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

      Standard Voltage
      except 1ND-TV
      Tester Connection Condition Specified Condition
      B53-1 - Body ground Always 11 to 14 V
      5 - Body ground Always 11 to 14 V
      for 1ND-TV
      Tester Connection Condition Specified Condition
      C1-1 - Body ground Always 11 to 14 V
      5 - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - B1-1 Always Below 1 Ω
      3 or B1-1 - Body ground Always 10 kΩ or higher

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. READ VALUE USING INTELLIGENT TESTER (S CODE CHECK)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Entry & Start / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • S code has not been registered for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU).

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).
      OK
      OK (S code certification result normal) appears on the screen.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    OK

  14. CHECK STEERING LOCK


    1. Check that the steering unlocks when the engine switch is turned on (ACC).

      OK
      The steering unlocks.

    NG

    READ VALUE USING INTELLIGENT TESTER (STEERING UNLOCK SWITCH) Click here

    OK

  15. READ VALUE USING INTELLIGENT TESTER (IMMOBILISER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Entry & Start / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Immobiliser State of immobiliser system determined by certification ECU (smart key ECU assembly) / Set or Unset

      Unset: Engine immobiliser unset (engine switch on [ACC] or on [IG])

      Set: Engine immobiliser set (engine switch off)

      • When the immobiliser cannot be unset, this item can be used to determine whether the certification ECU (smart key ECU assembly) is part of the problem.

      • The engine cannot be started when this item displays "Set"
      OK
      The Data List item changes to "Unset" when the engine switch is turned on (ACC) or on (IG).

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    OK

  16. READ VALUE USING INTELLIGENT TESTER (STARTER REQUEST SIGNAL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Power Source Control / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Starter Request Signal Condition of engine start command signal / OFF or ON

      OFF: Engine switch released after approximately 1 second elapses

      ON: Engine switch pressed and held while carrying electrical key transmitter assembly with shift lever in P*1 and brake pedal*1 or clutch pedal*2 depressed

      • When the engine cannot be started due to a start request signal malfunction, OFF is displayed.

      • When the engine switch is pressed, the duration of time that ON is displayed will be extremely short. As such, the engine switch needs to be pressed and held for a certain amount of time.

      • *1: for CVT

      • *2: for Manual Transaxle

      OK
      The display changes in response to the operation of the engine switch.

      Note

      Make sure that the entry key indicator in the combination meter assembly illuminates in green before pressing the engine switch.


    OK

    END

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  17. READ VALUE USING INTELLIGENT TESTER (NEUTRAL SW/ CLUTCH SW, SHIFT POSITION P OR N)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Power Source Control or Starting Control / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Neutral SW / Clutch SW Shift position (P*1, N*1) / OFF or ON

      OFF: Shift lever not in P*1 or N*1 or released

      ON: Shift lever in P*1 or N*1 depressed

      • Use this item to help determine if the park/neutral position switch is malfunctioning.

      • The engine cannot be started when this item is "OFF".

      • *1: for CVT

      Starting Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shift Position P or N Condition of park/neutral position switch / OFF or ON

      OFF: Shift lever not in P*1 or N*1

      ON: Shift lever in P*1 or N*1

      		 When malfunctioning, the engine will not crank.

      • *1: for CVT

      OK
      The items in the Data List change according to the shift position.

    NG

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  18. READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH1)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Power Source Control or Starting Control / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Stop Light Switch1 State of brake pedal / OFF or ON

      OFF: Brake pedal released

      ON: Brake pedal depressed

      • Use this item to determine whether the stop light switch is malfunctioning.

      • The engine cannot be started when this item is "OFF".

      • When this item is malfunctioning, the engine can be started by pressing and holding the engine switch for a certain period of time.
      OK
      The item in the Data List changes when the brake pedal is depressed and released.
      Result
      Result Proceed to
      OK A
      NG (for LED Type Stop Light) B
      NG (for Bulb Type Stop Light) C

    A

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B

    CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER SOURCE AND BODY GROUND) Click here

    C

    INSPECT STOP LIGHT SWITCH ASSEMBLY Click here

  19. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly (Seep page Click here).


    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  20. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)


    1. Disconnect the F65 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the B100 park/neutral position switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F65-5 (STAR) - B100-4 (B) Always Below 1 Ω
      F65-5 (STAR) or B100-4 (B) - Body ground Always 10 kΩ or higher

    4. Reconnect the B100 park/neutral position switch assembly connector.

    5. A01VJHJE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to certification ECU (smart key ECU assembly))

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F65-5 (STAR) - Body ground Engine switch pressed and held with brake pedal depressed (starter on) → Engine switch released after approximately 1 second elapses (starter off) 6 V or higher* → 1.5 V or less

      Tech Tips

      *: When the engine is cranking, the battery voltage may momentarily drop to approximately 6 V.


    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  21. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER SOURCE AND BODY GROUND)


    1. A01VKM5E01
      Text in Illustration
      *a

      Front view of wire harness connected

      (to Stop Light Switch Assembly)

      Disconnect the stop light switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A83-7 (B) - A83-2 (GND) Engine switch off 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      A83-2 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  22. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. A01VJ9GE01
      Text in Illustration
      *a

      Component with harness connector

      (Stop Light Switch Assembly)

      Reconnect the stop light switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A83-3 (L) - A83-2 (GND) Engine switch off, Brake pedal not depressed Below 1 V
      A83-3 (L) - A83-2 (GND) Engine switch off, Brake pedal depressed 11 to 14 V

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

  23. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY - STOP LIGHT SWITCH ASSEMBLY)


    1. Disconnect the F65 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A83*1 or A89*2 stop light switch assembly connector.


      • *1: for LED Type Stop Light

      • *2: for Bulb Type Stop Light

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

      Standard Resistance
      for LED Type Stop Light
      Tester Connection Condition Specified Condition
      F65-18 (STP1) - A83-3 (L) Always Below 1 Ω
      F65-18 (STP1) - Body ground Always 10 kΩ or higher
      for Bulb Type Stop Light
      Tester Connection Condition Specified Condition
      F65-18 (STP1) - A89-1 Always Below 1 Ω
      F65-18 (STP1) - Body ground Always 10 kΩ or higher

    4. Reconnect the A83*1 or A89*2 stop light switch assembly connector.


      • *1: for LED Type Stop Light

      • *2: for Bulb Type Stop Light

    5. A01VIFAE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (Certification ECU (Smart Key ECU Assembly))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F65-18 (STP1) - Body ground Brake pedal released Below 1 V
      Brake pedal depressed 9 V or higher

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  24. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly Click here.


    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

  25. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY)


    1. Disconnect the F65 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A83*1 or A89*2 stop light switch assembly connector.


      • *1: for LED Type Stop Light

      • *2: for Bulb Type Stop Light

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

      Standard Resistance
      for LED Type Stop Light
      Tester Connection Condition Specified Condition
      F65-18 (STP1) - A83-3 (L) Always Below 1 Ω
      F65-18 (STP1) - Body ground Always 10 kΩ or higher
      for Bulb Type Stop Light
      Tester Connection Condition Specified Condition
      F65-18 (STP1) - A89-1 Always Below 1 Ω
      F65-18 (STP1) - Body ground Always 10 kΩ or higher

    4. Reconnect the A83*1 or A89*2 stop light switch assembly connector.


      • *1: for LED Type Stop Light

      • *2: for Bulb Type Stop Light

    5. A01VIFAE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (Certification ECU (Smart Key ECU Assembly))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F65-18 (STP1) - Body ground Brake pedal released Below 1 V
      Brake pedal depressed 9 V or higher

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  26. READ VALUE USING INTELLIGENT TESTER (NEUTRAL SW/ CLUTCH SW)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Power Source Control / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Neutral SW / Clutch SW State of clutch pedal / OFF or ON

      OFF: Clutch pedal released

      ON: Clutch pedal depressed

      • Use this item to help determine if the clutch position switch is malfunctioning.

      • The engine cannot be started when this item is "OFF".
      OK
      ON (clutch pedal depressed) and OFF (clutch pedal released) appear on the screen according to the condition of the clutch pedal.

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

  27. INSPECT CLUTCH START SWITCH ASSEMBLY


    1. Inspect the clutch start switch assembly Click here.


    NG

    REPLACE CLUTCH START SWITCH ASSEMBLY Click here

    OK

  28. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY)


    1. Disconnect the F65 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A39 clutch start switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F65-5 (STAR) - A39-2 Always Below 1 Ω
      F65-5 (STAR) or A39-2 - Body ground Always 10 kΩ or higher

    4. Reconnect the clutch start switch assembly connector.

    5. A01VJHJE01

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F65-5 (STAR) - Body ground Engine switch pressed and held with clutch start switch depressed (starter on) → Engine switch released after approximately 1 second elapses (starter off) 6 V or higher* → 1.5 V or less

      Tech Tips

      *: When the engine is cranking, the battery voltage may momentarily drop to approximately 6 V.


    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  29. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one.

      Note

      When the certification ECU (smart key ECU assembly) is replaced, it is also necessary to replace all registered electrical key transmitter sub-assemblies.

    2. Perform the registration procedures (Refer to Service Bulletin).

    3. Use the Data List to check if S code certification is functioning properly again.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • S code has not been registered for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU).

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).
      OK
      OK (S code certification result normal) appears on the screen.

    OK

    END

    NG

  30. REPLACE ID CODE BOX (IMMOBILISER CODE ECU)


    1. Replace the ID code box (immobiliser code ECU) with a new one.

    2. Perform the registration procedures (Refer to Service Bulletin).

    3. Use the Data List to check if S code certification is functioning properly again.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • S code has not been registered for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU).

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).
      OK
      OK (S code certification result normal) appears on the screen.

    NEXT

    END

  31. READ VALUE USING INTELLIGENT TESTER (STEERING UNLOCK SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Power Source Control / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Steering Unlock Switch State of steering unlock sensor signal output from steering lock actuator assembly / OFF or ON

      OFF: Steering locked

      ON: Steering unlocked

      • When the shift lever is in P*1 and the engine switch is off, if any door is opened or closed, the steering is locked.

      • When the electrical key transmitter assembly is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering unlocks.

      • The engine cannot be started when the steering unlock signal is off.

      • *1: for CVT

      OK
      The item in the Data List indicates "ON" (the steering is unlocked).

    OK

    GO TO STEERING LOCK SYSTEM (UNABLE TO UNLOCK STEERING WHEEL) Click here

    NG

  32. READ VALUE USING INTELLIGENT TESTER (L CODE CHECK)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Entry & Start / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock actuator assembly (steering lock ECU) / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • L code has not been registered for the ID code box (immobiliser code ECU) or steering lock actuator assembly (steering lock ECU).

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).
      OK
      The Data List item changes to "OK" when the electrical key transmitter assembly is inside the vehicle.

      Tech Tips

      Reasons for verification failure:


      • The steering lock ECU, ID code box (immobiliser code ECU) is malfunctioning.

      • There is a problem with the communication between ECUs.

      • An ECU is replaced, but is not registered.

      • An ECU is replaced with an ECU which has a code already stored in it.


    NG

    REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Click here

    OK

  33. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)


    1. Replace the steering lock actuator assembly (steering lock ECU) with a new one.


    2. Perform the registration procedures (Refer to Service Bulletin).

    3. Turn the engine switch on (IG).

    4. Operate the steering wheel and check the steering condition.


    NEXT

    END

  34. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)


    1. Replace the steering lock actuator assembly (steering lock ECU) with a new one.


    2. Perform the registration procedures (Refer to Service Bulletin).

    3. Use the Data List to check if L code certification is functioning properly again.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock actuator assembly (steering lock ECU) / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • L code has not been registered for the ID code box (immobiliser code ECU) or steering lock actuator assembly (steering lock ECU).

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).
      OK
      OK (L code certification result normal) appears on the screen.

    OK

    END

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  35. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one.

    2. Perform the registration procedures (Refer to Service Bulletin for registration).

    3. Use the Data List to check if S code certification is functioning properly again.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • S code has not been registered for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU).

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).
      OK
      OK (S code certification result normal) appears on the screen.

    OK

    END

    NG

  36. REPLACE ID CODE BOX (IMMOBILISER CODE ECU)


    1. Replace the ID code box (immobiliser code ECU) with a new one.

    2. Perform the registration procedures (Refer to Service Bulletin).

    3. Use the Data List to check if S code certification is functioning properly again.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • S code has not been registered for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU).

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).
      OK
      OK (S code certification result normal) appears on the screen.

    NEXT

    END