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

DTC Code DTC Name
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 or N*1 and the brake pedal*1 or clutch pedal*2 is depressed, the engine can be started by pressing the engine switch.

  • *1: except Manual Transaxle

  • *2: for Manual Transaxle

Tip:

  • 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.

Table 1. 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

  • 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

  • Entry&Start:

  • Immobiliser

  • S Code Check*2

  • L Code Check

  • Engine Start Request

  • Starting Control:

  • Ignition

  • Starter SW

  • Shift Position P or N*1

-

  • *1: except Manual Transaxle

  • *2: w/ ID Code Box (Immobiliser Code ECU)

WIRING DIAGRAM

Refer to "System Diagram".

Click here

C346900E01

CAUTION / NOTICE / HINT

Note:

  • When using the GTS with the engine switch off to troubleshoot:

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

  • 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 (Click here). 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 certification ECU (smart key ECU assembly), steering lock ECU (steering lock actuator assembly), ECM or ID code box (immobiliser code ECU) (w/ ID code box (immobiliser code ECU)), 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 inspection 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.

Tip:

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

      Tip:

      • 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.

      Tip:

      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 (except Manual Transaxle).

    3. With the brake pedal (except Manual Transaxle) or clutch pedal (for Manual Transaxle) released, check that pressing the engine switch causes the power source mode to change.

      Result

      Proceed to

      Off → on (ACC) → on (IG) → off

      Power source mode does not change to on (ACC) and on (IG)

      Power source mode changes to on (IG) but not to on (ACC)

      Power source mode changes to on (ACC) but not to on (IG)
    Power source mode does not change to on (ACC) and on (IG)

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

    Click here

    Power source mode changes to on (IG) but not to on (ACC)

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

    Click here

    Power source mode changes to on (ACC) but not to on (IG)

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

    Click here

    Off → on (ACC) → on (IG) → off

  5. CHECK CRANKING FUNCTION

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

    2. Move the shift lever to P (except Manual Transaxle).

    3. Depress the brake pedal (except Manual Transaxle) or clutch pedal (for Manual Transaxle).

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

    OK

    Engine cranks.

    Result

    Proceed to

    OK

    NG (for ECD system)

    NG (for SFI system)
    NG (for ECD system)

    GO TO ECD SYSTEM (PROBLEM SYMPTOMS TABLE)

    for 2WW:Click here

    for 2AD-FHV:Click here

    for 2AD-FTV (for DPF):Click here

    for 2AD-FTV (for CCo):Click here

    NG (for SFI system)

    GO TO SFI SYSTEM (PROBLEM SYMPTOMS TABLE)

    for 2AR-FE (w/ Canister Pump Module):Click here

    for 2AR-FE (w/o Canister Pump Module):Click here

    for 3ZR-FAE:Click here

    for 3ZR-FE (for K111, K111F):Click here

    for 3ZR-FE (except K111, K111F):Click here

    OK

  6. CHECK SECURITY INDICATOR LIGHT (ENGINE IMMOBILISER SYSTEM UNSET)

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

    2. Move the shift lever to P (except Manual Transaxle).

    3. Press the engine switch with the brake pedal (except Manual Transaxle) or clutch pedal (for Manual Transaxle) 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).

      Tip:

      It is determined that the engine 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 (w/ ID Code Box (Immobiliser Code ECU))

    NG (w/o ID Code Box (Immobiliser Code ECU))
    NG (w/ ID Code Box (Immobiliser Code ECU))

    READ VALUE USING GTS (S CODE CHECK)Click here

    NG (w/o ID Code Box (Immobiliser Code ECU))

    CHECK STEERING LOCKClick here

    OK

  7. CHECK COMBINATION METER ASSEMBLY

    1. Get into the vehicle while carrying the key, move the shift lever to P (except Manual Transaxle), press the engine switch while depressing the brake pedal (except Manual Transaxle) or clutch pedal (for Manual Transaxle) and check that the combination meter indicator changes.

      Tip:

      If the key warning light is displayed when the procedure above is performed, the P, N and brake signals*1 or clutch signals*2 can be considered to be normal.

      • *1: except Manual Transaxle

      • *2: for Manual Transaxle

      OK

      The key warning light is displayed.

    Result

    Proceed to

    OK

    NG (except Manual Transaxle)

    NG (for Manual Transaxle)
    NG (except Manual Transaxle)

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

    NG (for Manual Transaxle)

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

    OK

  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 sub-assembly, move the shift lever to P (except Manual Transaxle), press the engine switch while depressing the brake pedal (except Manual Transaxle) or clutch pedal (for Manual Transaxle) and confirm that the Data List item changes.

      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 RELAY (STARTER RELAY ASSEMBLY)

    1. Inspect the ST relay (starter relay assembly).

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE ST RELAY (STARTER RELAY ASSEMBLY)

    OK

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

    1. B268625C43

      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Disconnect the G82 certification ECU (smart key ECU assembly) connector.

    2. Move the shift lever to P or N.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - Body ground

      20°C (68°F)

      100 to 150 Ω

      G82-7 (STA) - Body ground

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT STARTER ASSEMBLY

    1. Inspect starter assembly.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE STARTER ASSEMBLY

    for 2WW:Click here

    for 2AD-FHV:Click here

    for 2AD-FTV:Click here

    for 2AR-FE (for 1.6 kw Type):Click here

    for 2AR-FE (for 1.7 kw Type):Click here

    for 3ZR-FAE:Click here

    for 3ZR-FAE (w/ Stop And Start System):Click here

    for 3ZR-FE (for 1.0 kw Type):Click here

    for 3ZR-FE (for 1.3 kw Type):Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (BATTERY - STARTER AND ST RELAY (STARTER RELAY ASSEMBLY))

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

    2. Remove the ST relay (starter relay assembly) from the No. 2 engine room relay block assembly.

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

      Standard Voltage

      for 2AR-FE

      Tester Connection

      Condition

      Specified Condition

      C5-1 - Body ground

      Always

      11 to 14 V

      5 - Body ground

      for 3ZR-FAE (w/o Stop and Start System), 3ZR-FE

      Tester Connection

      Condition

      Specified Condition

      C6-1 - Body ground

      Always

      11 to 14 V

      5 - Body ground

      for 2WW, 2AD-FHV, 2AD-FTV

      Tester Connection

      Condition

      Specified Condition

      C4-1 - Body ground

      Always

      11 to 14 V

      5 - Body ground

      for 3ZR-FAE (w/ Stop and Start System)

      Tester Connection

      Condition

      Specified Condition

      B96-1 (B) - Body ground

      Always

      11 to 14 V

      5 - Body ground

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

      Standard Resistance

      except 3ZR-FAE (w/ Stop and Start System)

      Tester Connection

      Condition

      Specified Condition

      3 - B6-1

      Always

      Below 1 Ω

      3 or B6-1 - Body ground

      10 kΩ or higher

      for 3ZR-FAE (w/ Stop and Start System)

      Tester Connection

      Condition

      Specified Condition

      3 - B87-2 (SL1)

      Always

      Below 1 Ω

      3 or B87-2 (SL1) - Body ground

      10 kΩ or higher

    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 and 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, N)

      ON or OFF

      ON: Shift lever in P or N

      OFF: Shift lever not in P or N

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

      • When the engine cannot be started due to a park/neutral position switch 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

      Condition of park/neutral position switch

      ON or OFF

      ON: Shift lever in P or N

      OFF: Shift lever not in P or N

      When malfunctioning, the engine will not crank.

      Body Electrical > Starting Control > Data List

      Tester Display

      Shift Position P or N

      OK

      The item in the Data List changes according to the shift position.

    Result

    Proceed to

    OK

    NG
    NG

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

    1. Disconnect the G82 connector from certification ECU (smart key ECU assembly).

    2. Disconnect the A77 connector from the stop light switch assembly.

    3. Disconnect the A61*1 or A62*2 connector from ECM connector.

      • *1: for 2AD-FHV, 2AD-FTV

      • *2: except 2AD-FHV, 2AD-FTV

    4. Disconnect the A80 connector from skid control ECU (brake actuator assembly).

    5. Disconnect the G35 connector from shift lock control ECU (transmission floor shift assembly).

    6. Disconnect the B79 connector from transmission control ECU assembly.

    7. C346899C01

      *a

      Front view of wire harness connector

      (to Stop Light Switch Assembly)

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A77-7 (B) - Body ground

      Always

      11 to 14 V

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G82-18 (STP1) - A77-3 (L)

      Always

      Below 1 Ω

      G82-18 (STP1) or A77-3 (L) - Body ground

      10 kΩ or higher

      A77-2 (GND) - Body ground

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  16. INSPECT STOP LIGHT SWITCH ASSEMBLY

    1. Inspect the stop light switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY

    Click here

  17. CHECK PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    1. Disconnect the B36*1 or B101*2 connector from the park/neutral position switch assembly.

      • *1: except 3ZR-FE

      • *2: for 3ZR-FE

    2. Inspect the park/neutral position switch assembly.

      • for Park/neutral position switch assembly (for U660F)

        Click here

      • for Park/neutral position switch assembly (for U760E)

        Click here

      • for Park/neutral position switch assembly (for U760F)

        Click here

      • for Park/neutral position switch assembly (for K111)

        Click here

      • for Park/neutral position switch assembly (for K111F)

        Click here

      • for Park/neutral position switch assembly (for K114F)

        Click here

      Result

      Proceed to

      OK

      NG
    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    for U660F:Click here

    for U760E:Click here

    for U760F:Click here

    for K111:Click here

    for K111F:Click here

    for K114F:Click here

    OK

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

    1. Disconnect the G82 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the B36*1 or B101*2 connector from the park/neutral position switch.

      • *1: except 3ZR-FE

      • *2: for 3ZR-FE

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

      Standard Resistance

      except 3ZR-FE

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - B36-4 (B)

      Always

      Below 1 Ω

      G82-5 (STAR) or B36-4 (B) - Body ground

      Always

      10 kΩ or higher

      for 3ZR-FE

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - B101-4 (B)

      Always

      Below 1 Ω

      G82-5 (STAR) or B101-4 (B) - Body ground

      Always

      10 kΩ or higher
    4. B268625C39

      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Reconnect the B36*1 or B101*2 connector from the park/neutral position switch assembly.

      • *1: except 3ZR-FE

      • *2: for 3ZR-FE

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G82-5 (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
      Tip:

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

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE SMART KEY ECU ASSEMBLY (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS AND 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 / 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 determine whether 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 G82 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A4*1 or F2*2 clutch start switch connector

      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance

      for RHD

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - F2-2

      Always

      Below 1 Ω

      G82-5 (STAR) or F2-2 - Body ground

      Always

      10 kΩ or higher

      for LHD

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - A4-2

      Always

      Below 1 Ω

      G82-5 (STAR) or A4-2 - Body ground

      Always

      10 kΩ or higher
    4. B268625C39

      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Reconnect the A4*1 or F2*2 clutch start switch assembly connector.

      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      G82-5 (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
      Tip:

      *: 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 AND 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
      Tip:

      • 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

      Engine immobiliser system determined by certification ECU (smart key ECU assembly)

      Set or Unset

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

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

      The engine cannot be started when Set is displayed.

      Tip:

      • 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 (w/ ID Code Box (Immobiliser Code ECU))

    NG (w/o ID Code Box (Immobiliser Code ECU))
    NG (w/ ID Code Box (Immobiliser Code ECU))

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)Click here

    NG (w/o ID Code Box (Immobiliser Code ECU))

    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

      • except Manual Transaxle

      • 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 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:

      Check that the key 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 (w/ ID Code Box (Immobiliser Code ECU))

      NG (w/o ID Code Box (Immobiliser Code ECU))
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG (w/ ID Code Box (Immobiliser Code ECU))

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)Click here

    NG (w/o ID Code Box (Immobiliser Code ECU))

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  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 and the engine switch is off, if any door is opened or closed, the steering is locked.

      • When the key 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

      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)

    Click here

    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)*1

      Verification result between certification ECU (smart key ECU assembly) and steering lock ECU (steering lock actuator assembly)*2

      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 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).

      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).

      • *1: w/ ID Code Box (Immobiliser Code ECU)

      • *2: w/o ID Code Box (Immobiliser Code ECU)

      Body Electrical > Entry&Start > Data List

      Tester Display

      L Code Check
      Tip:

      • 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 key is inside the vehicle.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

    Click here

    NG

    READ VALUE USING GTS (S CODE CHECK)Click here

  28. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    1. Replace the certification ECU (smart key ECU assembly) with a new one (Refer to the Service Bulletin).

    2. Perform the registration procedures (Refer to the 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

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)Click here

  29. READ VALUE USING GTS (S CODE CHECK)

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

      Click here

    2. Perform the registration procedures (Refer to the 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)*1

      Verification result between certification ECU (smart key ECU assembly) and steering lock ECU (steering lock actuator assembly)*2

      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 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).

      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).

      • *1: w/ ID Code Box (Immobiliser Code ECU)

      • *2: w/o ID Code Box (Immobiliser Code ECU)

      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 (w/ ID Code Box (Immobiliser Code ECU))

    NG (w/o ID Code Box (Immobiliser Code ECU))
    OK

    END

    NG (w/ ID Code Box (Immobiliser Code ECU))

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    NG (w/o ID Code Box (Immobiliser Code ECU))

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  30. REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    1. Replace the ID code box (immobiliser code ECU) with a new one (Refer to the Service Bulletin).

    2. Perform the registration procedures (Refer to the 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