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

DESCRIPTION

When the key 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,*2 and the brake pedal*1,*2 or clutch pedal*3 is depressed, the engine can be started by pressing the engine switch.


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

    Power Source Control

  • Stop Light Switch1*1,*2

  • Steering Unlock Switch

  • Power Supply Condition

  • IG1 Relay Monitor(Inside)

  • IG2 Relay Monitor(Inside)

  • IG1 Relay Monitor(Outside)

  • IG2 Relay Monitor(Outside)

  • Latch Circuit

  • Shift P Signal*1

  • Neutral SW/ Clutch SW

  • Starter Request Signal


    Smart Key

  • S Code Check

  • L Code Check

  • Engine Start Request

  • Immobiliser


    Starting Control

  • Ignition

  • Starter SW

  • Shift Position P or N*1,*2

 -

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.*


  • *: for CVT or Multi-Mode Manual Transaxle

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • The entry and start system (for Start Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

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

    Click here

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

    Click here

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

  • If the steering lock ECU (steering lock actuator assembly) 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 occur.

Tech Tips


  • When the certification ECU (smart key ECU assembly) is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode changes to on (IG).

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

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.

      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


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

      OK
      No DTCs are output.

      Note

      Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.

      Result
      Proceed to
      OK
      NG

    NG

    GO TO DTC CHART

    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 sub-assembly near the door control receiver (RF band).

      OK
      Engine starts.
      Result
      Proceed to
      OK
      NG

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  4. CHECK ENGINE SWITCH CONDITION


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

    2. Move the shift lever to P.*1

    3. Move the shift lever to N.*2

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

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


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      • *3: for Manual Transaxle

      Result
      Result Proceed to
      Off → on (ACC) → on (IG) → off A
      Power source mode does not change to on (ACC) and on (IG) B
      Power source mode changes to on (IG) but not to on (ACC) C
      Power source mode changes to on (ACC) but not 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 an electrical key transmitter sub-assembly.

    2. Move the shift lever to P.*1

    3. Move the shift lever to N.*2

    4. Depress the brake pedal.*1,*2

    5. Depress the clutch pedal.*3

    6. w/ Multi-information Display (Segment LCD Type):

      Confirm that the smart key warning light is illuminated in green, and then press the engine switch and check that the engine cranks.

    7. w/ Multi-information Display (Dot LCD Type):

      Confirm that the smart warning light is displayed, and then press the engine switch and check that the engine cranks.


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      • *3: for Manual Transaxle

      OK
      Engine cranks.
      Result
      Result Proceed to
      NG A
      OK (for 1NR-FE) B
      OK (for 1ZR-FAE) C
      OK (for 1ND-TV) D
      OK (for 1AD-FTV) 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) (PROBLEM SYMPTOMS TABLE) Click here

    E

    GO TO ECD SYSTEM (PROBLEM SYMPTOMS TABLE) (PROBLEM SYMPTOMS TABLE) Click here

    A

  6. CHECK SECURITY INDICATOR LIGHT (IMMOBILISER SYSTEM UNSET)


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

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


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

    3. Press the engine switch with the brake pedal released and check that the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).

      Tech Tips

      It is determined that the immobiliser function is operating correctly if the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).

      OK
      Security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).
      Result
      Proceed to
      OK
      NG

    NG

    READ VALUE USING GTS (S CODE CHECK) Click here

    OK

  7. CHECK COMBINATION METER ASSEMBLY


    1. Get into the vehicle while carrying the electrical key transmitter sub-assembly, move the shift lever to P*1 or N*2, depress the brake pedal*1, *2 or clutch pedal*3 and check that the combination meter indicator changes.

      Tech Tips

      If the smart warning light illuminates in green (w/ Multi-information Display (Segment LCD Type)) or smart warning light is displayed (w/ Multi-information Display (Dot LCD Type)) when the procedure above is performed, the P, N and brake signals*1,*2 or clutch signal*3 can be considered to be normal.


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      • *3: for Manual Transaxle

      OK
      The smart warning light illuminates in green (w/ Multi-information Display (Segment LCD Type)).
      The smart warning light is displayed (w/ Multi-information Display (Dot LCD Type)).
      Result
      Result Proceed to
      OK A
      NG (for CVT or Multi-Mode Manual Transaxle ) B
      NG (for Manual Transaxle) C

    B

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

    C

    READ VALUE USING GTS (NEUTRAL SW/ CLUTCH SW) Click here

    A

  8. READ VALUE USING GTS (STARTER SW)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Get into the vehicle while carrying the electrical key transmitter assembly, move the shift lever to P*1 or N*2, press the engine switch while depressing the brake pedal*1, *2 or clutch pedal*3 and confirm that the Data List item changes.


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      • *3: for Manual Transaxle


      Body Electrical > Starting Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Starter SW Starter operation request ON or OFF

      ON: Starter operation requested

      OFF: Starter operation not requested

      		 When malfunctioning, the engine will not crank.

      Body Electrical > Starting Control > Data List
      Tester Display
      Starter SW
      OK
      The Data List item changes.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  9. INSPECT ST NO. 1 RELAY


    1. A00YB5Z

      Remove the ST NO. 1 relay from the engine room relay block and junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 93.8 to 136.4 Ω
      3 - 5 Battery voltage not applied to terminals 1 and 2 10 kΩ or higher
      Battery voltage applied to terminals 1 and 2 Below 1 Ω

    3. Reinstall the ST NO. 1 relay to the engine room relay block and junction block assembly.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ST NO. 1 RELAY

    OK

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


    1. A00Y623C31
      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Disconnect the E33 certification ECU (smart key ECU assembly) connector. Move the shift lever to P or N.

    2. Move the shift lever to P or N. (for CVT)

    3. Move the shift lever to N. (for Multi-Mode Manual Transaxle)

    4. Depress the clutch pedal. (for Manual Transaxle)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E33-5 (STAR) - Body ground 20°C (68°F) 93.75 to 136.36 Ω
      E33-7 (STA) - Body ground
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT STARTER ASSEMBLY


    1. Inspect the starter assembly.

      for 1AD-FTV: Click here

      for 1ND-TV (w/ Stop and Start System): Click here

      for 1ND-TV (w/o Stop and Start System): Click here

      for 1NR-FE (w/ Stop and Start System): Click here

      for 1NR-FE (w/o Stop and Start System): Click here

      for 1ZR-FAE: Click here

      Result
      Result Proceed to
      OK A
      NG (for 1AD-FTV) B
      NG (for 1ND-TV (w/ Stop and Start System)) C
      NG (for 1ND-TV (w/o Stop and Start System)) D
      NG (for 1NR-FE (w/ Stop and Start System)) E
      NG (for 1NR-FE (w/o Stop and Start System)) F
      NG (for 1ZR-FAE) G

    B

    REPLACE STARTER ASSEMBLY Click here

    C

    REPLACE STARTER ASSEMBLY Click here

    D

    REPLACE STARTER ASSEMBLY Click here

    E

    REPLACE STARTER ASSEMBLY Click here

    F

    REPLACE STARTER ASSEMBLY Click here

    G

    REPLACE STARTER ASSEMBLY Click here

    A

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


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

    2. Remove the ST NO. 1 relay (start relay assembly) from the engine room relay block and junction block assembly.

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

      Standard Voltage
      w/ Stop and Start System
      Tester Connection Condition Specified Condition
      s2-1 - Body ground*1 Always 11 to 14 V
      s4-1 - Body ground*2
      B15-1 - Body ground*3
      5 - Body ground
      w/o Stop and Start System
      Tester Connection Condition Specified Condition
      s2-1 - Body ground*1 Always 11 to 14 V
      B4-1 - Body ground*4
      B15-1 - Body ground*3
      5 - Body ground

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - B8-1 Always Below 1 Ω
      3 or B8-1 - Body ground 10 kΩ or higher

      • *1: for 1ND-TV

      • *2: for 1AD-FTV

      • *3: for 1NR-FE

      • *4: for 1ZR-FAE

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. READ VALUE USING GTS (NEUTRAL SW/ CLUTCH SW, SHIFT POSITION P OR N)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Body Electrical > Power Source Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Neutral SW/ Clutch SW Shift position (P*1, N*1, *2) ON or OFF

      ON: Shift lever in P*1 or N*1, *2

      OFF: Shift lever in any position other than P*1 or N*1, *2

      • Use this item to determine whether the park/neutral start switch assembly*1 or neutral position switch*2 is malfunctioning.

      • When the engine cannot be started due to a park/neutral start switch assembly*1 or neutral position switch*2 malfunction, OFF is displayed.

      Body Electrical > Power Source Control > Data List
      Tester Display
      Neutral SW/ Clutch SW

      Body Electrical > Starting Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shift Position P or N Park/neutral position switch*1 or neutral position switch*2 status ON or OFF

      ON: Shift lever in P*1 or N*1, *2

      OFF: Shift lever in any position other than P*1 or N*1, *2

      		 When malfunctioning, the engine will not crank.

      Body Electrical > Starting Control > Data List
      Tester Display
      Shift Position P or N

      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      OK
      The item in the Data List changes according to the shift position.
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY*1 OR NEUTRAL POSITION SWITCH*2 Click here

    OK

  14. READ VALUE USING GTS (STOP LIGHT SWITCH1)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Body Electrical > Power Source Control > Data List
      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.

      Body Electrical > Power Source Control > Data List
      Tester Display
      Stop Light Switch1
      OK
      The item in the Data List changes when the brake pedal is depressed and released.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

  15. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

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

    Result
    Proceed to
    OK
    NG

    1. Disconnect the A1 stop light switch assembly connector.

    2. A00Y6R8C12
      *a

      Rear view of wire harness connector

      (Certification ECU (Smart Key ECU Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E33-18 (STP1) - A1-1 Always Below 1 Ω
      E33-18 (STP1) or A1-1 - Body ground Always 10 kΩ or higher

    3. Reconnect the A1 stop light switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E33-18 (STP1) - Body ground Brake pedal released 1 V or less
      Brake pedal depressed 9 V or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  17. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY*1 OR NEUTRAL POSITION SWITCH*2


    1. Inspect the park/neutral position switch assembly.*1

      Click here

    2. Inspect the neutral position switch.*2

      Click here


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

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

    B

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    REPLACE NEUTRAL POSITION SWITCH Click here

    A

  18. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH*1 OR NEUTRAL POSITION SWITCH*2)


    1. Disconnect the E33 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the B110 park/neutral position switch assembly connector.*1

    3. Disconnect the c1 neutral position switch connector.*2

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

      Standard Resistance
      for CVT
      Tester Connection Condition Specified Condition
      E33-5 (STAR) - B110-4 (B) Always Below 1 Ω
      E33-5 (STAR) or B110-4 (B) - Body ground Always 10 kΩ or higher
      for Multi-Mode Manual Transaxle
      Tester Connection Condition Specified Condition
      E33-5 (STAR) - c1-2 Always Below 1 Ω
      E33-5 (STAR) or c1-2 - Body ground Always 10 kΩ or higher

    5. Reconnect the B110 park/neutral position switch assembly connector.*1

    6. Reconnect the c1 the neutral position switch connector.*2


      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

    7. A00Y623C32
      *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 Condition Specified Condition
      E33-5 (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.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  19. READ VALUE USING GTS (NEUTRAL SW/ CLUTCH SW)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Body Electrical > Power Source Control > Data List
      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 position switch is malfunctioning.

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

      Body Electrical > Power Source Control > Data List
      Tester Display
      Neutral SW/ Clutch SW
      OK
      ON (clutch pedal depressed) and OFF (clutch pedal released) appear on the screen according to the condition of the clutch pedal.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

  20. INSPECT CLUTCH START SWITCH ASSEMBLY


    1. Inspect the clutch start switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CLUTCH START SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the E33 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A5 clutch start switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E33-5 (STAR) - A5-2 Always Below 1 Ω
      E33-5 (STAR) or A5-2 - Body ground Always 10 kΩ or higher

    4. Reconnect the A5 the clutch start switch assembly connector.

    5. A00Y623C33
      *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 Condition Specified Condition
      E33-5 (STAR) - Body ground Engine switch pressed and held with clutch 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.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  22. READ VALUE USING GTS (S CODE CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Body Electrical > Entry&Start > Data List
      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:


      • 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).

      Body Electrical > Entry&Start > Data List
      Tester Display
      S Code Check

      Tech Tips

      Reasons for verification failure:


      • The certification ECU (smart key ECU assembly) or The 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.

      OK
      OK (S code certification result normal) appears on the screen.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    OK

  23. CHECK STEERING LOCK


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

      OK
      The steering unlocks.
      Result
      Proceed to
      OK
      NG

    NG

    READ VALUE USING GTS (STEERING UNLOCK SWITCH) Click here

    OK

  24. READ VALUE USING GTS (IMMOBILISER)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Immobiliser Immobiliser system determined by certification ECU (smart key ECU assembly) Set or Unset

      Set: Immobiliser system set (engine start prohibited) (engine switch off)

      Unset: Immobiliser system unset (engine start permitted) (engine switch on (ACC) or on (IG))

      The engine cannot be started when Set is displayed.

      Tech Tips


      • The security indicator light blinks when Set is displayed.

      • The security indicator light is linked with set/unset of the immobiliser and not linked with steering lock/unlock.

      Body Electrical > Entry&Start > Data List
      Tester Display
      Immobiliser
      OK
      The Data List item changes to "Unset" when the engine switch is turned on (ACC) or on (IG).
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  25. READ VALUE USING GTS (STARTER REQUEST SIGNAL)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Body Electrical > Power Source Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Starter Request Signal Engine start request signal status ON or OFF

        for CVT

      • ON: With the shift lever in P and brake pedal depressed, the engine switch is pressed and held

        OFF: After approx. 1 sec. has elapsed, the engine switch is released


        for Multi-Mode Manual Transaxle

      • ON: With the shift lever in N and brake pedal depressed, the engine switch is pressed and held

        OFF: After approx. 1 sec. has elapsed, the engine switch is released


        for Manual Transaxle

      • ON: With the clutch pedal depressed, the engine switch is pressed and held

        OFF: After approx. 1 sec. has elapsed, the engine switch is released

      • 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.

      Body Electrical > Power Source Control > Data List
      Tester Display
      Starter Request Signal

      Note


      • w/ Multi-information Display (Segment LCD Type):

        Check that the smart warning light on the combination meter assembly illuminates in green, and then press the engine switch.

      • w/ Multi-information Display (Dot LCD Type):

        Check that the smart warning is displayed on the multi-information display on the combination meter assembly, and then press the engine switch.

      Note

      Check that the smart warning light is displayed on the multi-information display on the combination meter assembly, and then press the engine switch.

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

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    GO TO STEP 30 Click here

  26. READ VALUE USING GTS (STEERING UNLOCK SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Body Electrical > Power Source Control > Data List
      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*1 or N*2 and the engine switch is off, if any door is opened or closed, the steering is locked.

      • When the electrical key transmitter sub-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.

      Body Electrical > Power Source Control > Data List
      Tester Display
      Steering Unlock Switch

      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

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

    OK

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

    NG

  27. READ VALUE USING GTS (L CODE CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


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

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:*1


      • The ID code for the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning.

      • The steering cannot be locked.

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

      When NG is displayed:*2


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

      • The steering cannot be locked.

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

      Body Electrical > Entry&Start > Data List
      Tester Display
      L Code Check

      Tech Tips

      Reasons for verification failure:


      • The steering lock ECU (steering lock actuator assembly) or 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.

      OK
      The Data List item changes to "OK" when the electrical key transmitter sub-assembly is inside the vehicle.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

    NG

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

  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.

      Tech Tips

      Refer to Service Bulletin.

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


      Body Electrical > Entry&Start > Data List
      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:


      • 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).

      Body Electrical > Entry&Start > Data List
      Tester Display
      S Code Check
      OK
      OK (S code certification result normal) appears on the screen.
      Result
      Proceed to
      OK
      NG

    OK

    END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU) Click here

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


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

    2. Perform the registration procedures.

      Tech Tips

      Refer to Service Bulletin.

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


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

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • The ID code for the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning.

      • The steering cannot be locked.

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

      Body Electrical > Entry&Start > Data List
      Tester Display
      L Code Check
      OK
      OK (L code certification result normal) appears on the screen.
      Result
      Proceed to
      OK
      NG

    OK

    END (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) WAS DEFECTIVE)

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  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.

      Tech Tips

      Refer to Service Bulletin.

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


      Body Electrical > Entry&Start > Data List
      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:


      • 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).

      Body Electrical > Entry&Start > Data List
      Tester Display
      S Code Check
      OK
      OK (S code certification result normal) appears on the screen.
      Result
      Proceed to
      NEXT

    NEXT

    END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)