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

DESCRIPTION

When the electrical key transmitter 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 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*.

  • 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*.

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


WIRING DIAGRAM

Refer to "System Diagram" Click here.

CAUTION / NOTICE / HINT

Note


  • When using the intelligent tester with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the intelligent tester and vehicle begins, or 2) connect the intelligent tester to the vehicle and select "Manual" from the initial screen on the intelligent tester. Select "KEY REGIST" under Model Code.

  • 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.

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

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

  • Before replacing the steering lock actuator assembly (steering lock ECU), certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU)*, refer to the Service Bulletin.

  • 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.


Tech Tips

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

 -

Tech Tips

for CVT:

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.

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.


    NEXT

  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 ENGINE SWITCH CONDITION


    1. When the electrical key transmitter is inside the vehicle and the shift lever is in P*1, push the engine switch with the brake pedal*1 or clutch pedal*2 released and check that the power source mode changes.


      • *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

  4. CHECK CRANKING FUNCTION


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

    2. Move the shift lever to P*1.

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

    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.


      • *1: for CVT

      • *2: for Manual Transaxle

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

    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

    A

  5. CHECK THEFT WARNING INDICATOR LIGHT ASSEMBLY (ENGINE IMMOBILISER SYSTEM UNSET)


    1. Get into the vehicle while carrying the electrical key transmitter, move the shift lever to P*1, press the engine switch while not depressing the brake pedal*1 or clutch pedal*2 and check that the theft warning indicator light stops blinking and turns off at the same time the power source mode changes to on (ACC).


      • *1: for CVT

      • *2: for Manual Transaxle

      OK
      The theft warning indicator light stops blinking and turns off at the same time the power source mode changes to on (ACC).

      Tech Tips

      If the theft warning indicator light stops blinking and turns off at the same time the power source mode changes to on (ACC), the engine immobiliser function can be presumed to be normal.

      Result
      Result Proceed to
      OK A
      NG (except 1NZ-FE) B
      NG (for 1NZ-FE) C

    B

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

    C

    CHECK STEERING LOCK Click here

    A

  6. CHECK ENTRY KEY INDICATOR LIGHT


    1. Get into the vehicle while carrying the electrical key transmitter, 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 indicator 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

  7. 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, 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/ON or OFF

      ON: Starter activation requested

      OFF: Starter activation not 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

  8. INSPECT ST RELAY


    1. for 1NZ-FE


      1. Remove the ST2 relay from the engine room relay block.

      2. Remove the ST/MGC relay from the No. 2 engine room relay block.

      3. Inspect the ST2 relay and ST/MGC relay Click here.

    2. except 1NZ-FE


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

      2. Inspect the ST relay.



    NG

    REPLACE ST RELAY

    OK

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


    1. A005IPOE01
      Text in Illustration
      *a

      Component without harness connected

      (Certification ECU (Smart Key ECU Assembly))

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

    2. Move the shift lever to P or N*1 or depress the clutch pedal*2.

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


      • *1: for CVT

      • *2: for Manual Transaxle

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

    B

    INSPECT STARTER ASSEMBLY Click here

    C

    INSPECT STARTER ASSEMBLY Click here

    D

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  10. INSPECT STARTER ASSEMBLY


    1. Remove the starter assembly Click here.

    2. Inspect the starter assembly Click here.

      Result
      Result Proceed to
      NG A
      OK B

    A

    REPLACE STARTER ASSEMBLY Click here

    B

    CHECK HARNESS AND CONNECTOR (BATTERY - ENGINE ROOM RELAY BLOCK, NO. 2 ENGINE ROOM RELAY BLOCK AND STARTER ASSEMBLY) Click here

  11. INSPECT STARTER ASSEMBLY


    1. Remove the starter assembly.


    2. Inspect the starter assembly.


      Result
      Result Proceed to
      NG (w/ Stop and Start System) A
      NG (w/o Stop and Start System) B
      OK C

    A

    REPLACE STARTER ASSEMBLY Click here

    B

    REPLACE STARTER ASSEMBLY Click here

    C

    CHECK HARNESS AND CONNECTOR (BATTERY - ENGINE ROOM RELAY BLOCK, NO. 2 ENGINE ROOM RELAY BLOCK AND STARTER ASSEMBLY) Click here

  12. INSPECT STARTER ASSEMBLY


    1. Remove the starter assembly.


      1. for 1.6 kw Type Click here

      2. for 2.0 kw Type Click here

    2. Inspect the starter assembly.


      1. for 1.6 kw Type Click here

      2. for 2.0 kw Type Click here

      Result
      Result Proceed to
      OK A
      NG (for 1.6 kw Type) B
      NG (for 2.0 kw Type) C

    B

    REPLACE STARTER ASSEMBLY Click here

    C

    REPLACE STARTER ASSEMBLY Click here

    A

  13. CHECK HARNESS AND CONNECTOR (BATTERY - ENGINE ROOM RELAY BLOCK, NO. 2 ENGINE ROOM RELAY BLOCK AND STARTER ASSEMBLY)


    1. for 1NZ-FE


      1. Remove the ST2 relay from the engine room relay block.

      2. Remove the ST/MGC relay from the No. 2 engine room relay block.

      3. Remove the starter assembly Click here.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      B53-1 (B) - Body ground Always 11 to 14 V
      ST/MGC relay terminal 5 - Body ground Always 11 to 14 V
      ST2 relay terminal 5 - Body ground Always 11 to 14 V

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      ST/MGC relay terminal 3 - B87-2 (SL1) Always Below 1 Ω
      ST2 relay terminal 3 - B87-1 (SL2) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      ST/MGC relay terminal 3 or B87-2 (SL1) - Body ground Always 10 kΩ or higher
      ST2 relay terminal 3 or B87-1 (SL2) - Body ground Always 10 kΩ or higher

    3. except 1NZ-FE


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

      2. Remove the starter assembly.



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

      Standard Voltage
      Tester Connection Condition Specified Condition
      ST relay terminal 5 - Body ground Always 11 to 14 V
      B53-1 - Body ground*1 Always 11 to 14 V
      C1-1 - Body ground*2 Always 11 to 14 V

      • *1: for 1NR-FE

      • *2: for 1ND-TV

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      ST relay terminal 3 - B1-1 Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      ST relay terminal 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

  14. 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 a malfunction is present:


      • The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • 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

  15. 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

  16. 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).
      Result
      Result Proceed to
      OK A
      NG (except 1NZ-FE) B
      NG (for 1NZ-FE) C

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    C

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

  17. 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 / ON or OFF

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

      OFF: Engine switch released after approximately 1 second elapses

      • This item displays "ON" when cranking the engine.

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

      • *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.

      Result
      Result Proceed to
      OK (except 1NZ-FE) A
      OK (for 1NZ-FE) B
      NG C

    B

    GO TO SFI SYSTEM (PROBLEM SYMPTOMS TABLE) Click here

    C

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

  18. 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 for registration).

    3. Get into the vehicle while carrying the electrical key transmitter, move the shift lever to P*1, press the engine switch while not depressing the brake pedal*1 or clutch pedal*2 and check that the security indicator light stops blinking and turns off at the same time the power source mode changes to on (ACC).


      • *1: for CVT

      • *2: for Manual Transaxle


    NEXT

    END

  19. 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 or N) / ON or OFF

      ON: Shift lever in P or N depressed

      OFF: Shift lever not in P or N or released

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

      • The engine cannot be started when this item is "OFF".
      Starting Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shift Position P or N Condition of park/neutral position switch*1, *2 / ON or OFF

      ON: Shift lever in P or N

      OFF: Shift lever not in P or N

      		 When there is a malfunction, the engine cannot be cranked.
      OK
      The items in the Data List change according to the shift position.

    NG

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  20. 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 / Data List.

    5. Read the Data List according to the display on the intelligent tester.

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

      ON: Brake pedal depressed

      OFF: Brake pedal released

      • 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
      ON (brake pedal depressed) and OFF (brake pedal released) appear on the screen.
      Result
      Result Proceed to
      NG A
      OK (for 1NZ-FE) B
      OK (for 1NR-FE) C
      OK (for 1ND-TV) D

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    INSPECT STOP LIGHT SWITCH ASSEMBLY Click here

  21. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Remove the park/neutral position switch assembly.


    2. Inspect the park/neutral position switch assembly.


      Result
      Result Proceed to
      OK A
      NG (for K312 CVT) B
      NG (for K411 CVT) C

    B

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    A

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


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

    2. Disconnect the B69 park/neutral position switch assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      F65-5 (STAR) - B69-4 (B) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F65-5 (STAR) - Body ground Always 10 kΩ or higher

    4. Reconnect the B69 park/neutral position switch assembly connector.

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

      Standard Voltage
      Tester Connection 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* → 1.8 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

  23. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly Click here.


    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

  24. 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 A76 stop light switch assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      F65-18 (STP1) - A76-2 (L) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      F65-18 (STP1) or A76-2 (L) - Body ground Always 10 kΩ or higher

    4. Reconnect the A76 stop light switch assembly connector.

    5. A005I54E01
      Text in Illustration
      *a

      Component without wire harness connected

      (to Certification ECU (Smart Key ECU Assembly))

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

      Standard Voltage
      Tester Connection Brake Pedal Operation Specified Condition
      F65-18 (STP1) - Body ground Released Below 1 V
      Depressed 9 V or higher

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  25. 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 / ON or OFF

      ON: Clutch pedal depressed

      OFF: Clutch pedal released

      • Use this item to help determine if the clutch 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

  26. INSPECT CLUTCH START SWITCH ASSEMBLY


    1. Remove the clutch start switch assembly Click here.

    2. Inspect the clutch start switch assembly Click here.


    NG

    REPLACE CLUTCH START SWITCH ASSEMBLY Click here

    OK

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


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

    4. Reconnect the clutch start switch connector.

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

      Standard Voltage
      Tester Connection 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* → 1.8 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

  28. 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 a malfunction is present:


      • The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • 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

  29. 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 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 a malfunction is present:


      • The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).

    NEXT

    END

  30. 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 / ON or OFF

      ON: Steering unlocked

      OFF: Steering locked

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

      • When the electrical key transmitter 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.
      OK
      The item in the Data List indicates "OFF" (the steering is locked).

    OK

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

    NG

  31. 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)*1 or certification ECU*2 and steering lock actuator assembly / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When a malfunction is present:


      • The ID code for the ID code box*1, certification ECU (smart key ECU assembly)*2 or steering lock actuator assembly (steering lock ECU) is not registered or the ID code box*1,certification ECU (smart key ECU assembly)*2 or steering lock actuator assembly (steering lock ECU) is malfunctioning.

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).

      • *1: except 1NZ-FE

      • *2: for 1NZ-FE

      OK
      The Data List item changes to "OK" when the electrical key transmitter is inside the vehicle.

      Tech Tips

      Reasons for verification failure:


      • The steering lock ECU, ID code box (immobiliser code ECU)*1 or certification ECU*2 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.


      • *1: except 1NZ-FE

      • *2: for 1NZ-FE


    NG

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

    OK

  32. 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 for registration).

    3. Turn the engine switch on (IG).

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


    NEXT

    END

  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 for registration).

    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)*1 or certification ECU*2 and steering lock actuator assembly / OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When a malfunction is present:


      • The ID code for the ID code box*1, certification ECU (smart key ECU assembly)*2 or steering lock actuator assembly (steering lock ECU) is not registered or the ID code box*1,certification ECU (smart key ECU assembly)*2 or steering lock actuator assembly (steering lock ECU) is malfunctioning.

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).

      • *1: except 1NZ-FE

      • *2: for 1NZ-FE

      OK
      OK (L code certification result normal) appears on the screen.
      Result
      Result Proceed to
      OK A
      NG (except 1NZ-FE) B
      NG (for 1NZ-FE) C

    A

    END

    B

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    C

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  34. 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 a malfunction is present:


      • The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • 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

  35. 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 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 a malfunction is present:


      • The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • The steering cannot be locked.

      • The steering cannot be unlocked (the engine cannot be started).

    NEXT

    END