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SMART ENTRY AND START SYSTEM Engine does not Start

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DTC Code DTC Name
  Engine does not Start
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DESCRIPTION


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  1. A017B5YE01
    A017DW7E03

    ENGINE START SYSTEM FUNCTION


    1. If the engine switch is pressed with the shift lever is in the P or N position and the brake pedal depressed, the main body ECU determines that it is an engine start request.

    2. The certification ECU (smart key ECU assembly) and other ECUs perform key verification via the LIN communication line.

    3. The main body ECU activates the ACC relay.

    4. The main body ECU activates the IG1 and IG2 relays.

    5. The certification ECU (smart key ECU assembly) outputs a steering UNLOCK signal. The signal is sent to the main body ECU via the steering lock ECU.

    6. The main body ECU sends an engine start request signal to the ECM.

    7. The ECM sends an ACC cut request signal to the main body ECU.

    8. The ECM and main body ECU activate the starter relay.

    9. The main body ECU deactivates the ACC relay until the main body ECU detects an engine start.

    10. When engine revolution speed reaches 1200 rpm, the ECM determines that the engine has been started.

      Symbol of main body ECU Signal
      STP Stop light switch ON signal Input
      SSW1/SSW2 Engine switch ON signal Input
      ACCD ACC relay operation signal Output
      SLP Steering lock actuator position signal Input
      IG1D IG1 relay operation signal Output
      IG2D IG2 relay operation signal Output
      STR2 Starter relay operation signal (Sub) Output
      STR Park/Neutral position switch signal Input
      TACH Engine start detection signal Input
      STSW Starter activation request signal Output
      ACCR ACC cut request signal Input
      Symbol of ECM Signal
      ACCR ACC cut request signal Output
      TACH Engine revolution speed signal Output
      STSW Starter activation request signal Input
      STAR Starter relay operation signal (Main) Output
      STA Starter activation signal Input
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WIRING DIAGRAM

See "CRANKING HOLDING FUNCTION CIRCUIT" (Click here).

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INSPECTION PROCEDURE


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  1. EMERGENCY ENGINE START CONTROL


    1. If there is a malfunction in the stop light switch circuit or STOP fuse, their signals may not be correctly transmitted to the main body ECU. This may result in the engine not starting even if the engine switch is pressed while the brake pedal is depressed and the shift lever is in the P position.

      To activate the starter:


      1. Turn the engine switch from off to on (ACC).

      2. Press and hold the engine switch for 15 seconds.

    Tip:

    If the main body ECU is replaced with a new one while the negative (-) battery terminal is connected, the power source mode will be in IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

    After the main body ECU, certification ECU (smart key ECU assembly), steering lock ECU, ID code box (immobiliser code ECU) and/or ECM are/is replaced, perform the registration procedure for the engine immobiliser system.

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PROCEDURE


  1. Click here

    CHECK THE ENGINE SWITCH CONDITION


    1. Check that the power source mode changes.


      1. When the key is inside the vehicle and the shift lever is in the P position, check that the power source mode changes.

        OK
        off → on (ACC) → on (IG) → off

  2. Click here

    CHECK DTC


    1. Delete the DTCs (Click here).

    2. Check for DTCs again.

    3. Proceed to the next step based on the inspection result.

      Result
      Result Proceed to
      No DTC is output A
      Smart entry and start system (starting function) DTCs are output B
      Steering lock DTCs are output C
      Engine immobiliser system DTCs are output D
      Vehicle stability control system DTCs are output E

  3. Click here

    CHECK CRANKING FUNCTION


    1. Check the engine cranking function.


      1. When there is fuel in the fuel tank, the key is inside the vehicle, and the shift lever is in the P position, check that depressing the brake pedal and pressing the engine switch crank the engine.

        Result
        Result Proceed to
        Engine cranks A
        Engine does not crank B

  4. Click here

    READ VALUE USING INTELLIGENT TESTER (STARTER CONTROL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Read the DATA LIST according to the displays on the tester screen.

      Table 1. ECM:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Starter Control Starter switch signal / ON or OFF

      ON: Engine switch on (ST)

      OFF: Engine switch except on (ST)

      		 -
      Standard
      Engine switch condition Tester display
      When engine switch is on (ST) ON
      When engine switch is except on (ST) OFF

  5. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (STARTER RELAY)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Perform Active Test according to the prompts displayed on the tester.

      Table 2. ECM:
      Tester Display Test Part Control Range Diagnostic Note
      Activate the Starter Relay Starter ON or OFF -
    4. A017CHHE01

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

      Standard voltage
      Tester Connection Condition Specified Condition
      Starter relay terminal 2 - Starter relay terminal 1 When starter relay is ON by Active test using intelligent tester 8 to 14 V
      Starter relay terminal 2 - Starter relay terminal 1 When starter relay is OFF by Active test using intelligent tester Below 1 V

  6. Click here

    INSPECT STARTER RELAY


    1. A017B6E

      Remove the starter relay from the engine room relay block.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 - 5 When battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage is applied to terminals 1 and 2 Below 1 Ω

  7. Click here

    CHECK HARNESS AND CONNECTOR (STARTER RELAY TERMINAL VOLTAGE AND RESISTANCE)


    1. A017CHHE01

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

      Standard voltage
      Tester Connection Condition Specified Condition
      Starter 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
      Tester Connection Condition Specified Condition
      Starter relay terminal 1 - Body ground Always Below 1 Ω

  8. Click here

    CHECK HARNESS AND CONNECTOR (STARTER RELAY - STARTER)


    1. A017F38E01

      Disconnect the B12 connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      Engine room relay block starter relay terminal 3 - B12-1 Always Below 1 Ω
      Engine room relay block starter relay terminal 3 or B12-1 - Body ground Always 10 kΩ or higher

  9. Click here

    CHECK HARNESS AND CONNECTOR (BATTERY - STARTER)


    1. A017EH3E01

      Disconnect the C1 connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      C1-1 - Body ground Always 11 to 14 V

  10. Click here

    READ VALUE USING INTELLIGENT TESTER (PARK/NEUTRAL POSITION SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Read the DATA LIST according to the displays on the tester screen.

      Table 3. Body:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      N SW / C SW Park/Neutral position switch / ON or OFF

      ON: Shift position is P or N

      OFF: Shift position is not P or N

      		 -
      OK
      "ON" (Shift position is P or N) and "OFF" (Shift position is not P or N) appear on the screen.

  11. Click here

    READ VALUE USING INTELLIGENT TESTER (S CODE)


    1. Connect the intelligent tester to the DLC3.

      Tip:

      When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

    2. Turn the engine switch on (IG).

      Table 4. Entry & Start:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Chk S code check / OK or NG

      OK: Normal

      NG: Malfunction

      		 -
      OK
      "OK" is displayed on the screen.

  12. Click here

    READ VALUE USING INTELLIGENT TESTER (L CODE)


    1. Connect the intelligent tester to the DLC3.

      Tip:

      When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

    2. Turn the engine switch on (IG).

      Table 5. Entry & Start:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      L Code Chk L code check / OK or NG

      OK: Normal

      NG: Malfunction

      		 -
      OK
      "OK" is displayed on the screen.

  13. Click here

    READ VALUE USING INTELLIGENT TESTER (IMMOBILISER SYSTEM STATUS)


    1. Connect the intelligent tester to the DLC3.

      Tip:

      When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

    2. Turn the engine switch on (IG).

      Table 6. Immobiliser:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Immobiliser Immobiliser system status / SET or UNSET

      UNSET: Engine switch ON

      SET: Without key

      		 -
      OK
      UNSET (Engine switch ON) appears on the screen.

  14. Click here

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND)


    1. A017CATE02

      Disconnect the D7 connector from the main body ECU.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D7-8 (STA) - Body ground Shift position is P or N 105 to 115 Ω
      D7-8 (STA) - Body ground Shift position is not P nor N 10 kΩ or higher

  15. Click here

    INSPECT PARK/NEUTRAL POSITION SWITCH


    1. A017BGEE11

      Disconnect the B5 connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      4 - 5 P Below 1 Ω
      4 - 5 N Below 1 Ω
      4 - 5 Except P and N 10 kΩ or higher

  16. Click here

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - PARK/NEUTRAL POSITION SWITCH)


    1. A017FIXE02

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D7-8 (STR) - B5-4 Always Below 1 Ω
      D7-8 (STA) or B5-4 - Body ground Always 10 kΩ or higher

  17. Click here

    CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)


    1. A017F6JE01

      Disconnect the B3 connector from the ECM.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      B5-5 - B3-11 (STA) Always Below 1 Ω
      B5-5 or B3-11 (STA) - Body ground Always 10 kΩ or higher

  18. Click here

    INSPECT STARTER RELAY


    1. A017B6E

      Remove the starter relay from engine room relay block.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 - 5 When battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage is applied to terminals 1 and 2 Below 1 Ω

  19. Click here

    CHECK HARNESS AND CONNECTOR (ECM - STARTER RELAY)


    1. A017B8XE01

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

      Standard resistance
      Tester Connection Condition Specified Condition
      Engine room relay block starter relay terminal 2 - B3-11 (STA) Always Below 1 Ω
      Engine room relay block starter relay terminal 2 or B3-11 (STA) - Body ground Always 10 kΩ or higher

  20. Click here

    INSPECT STARTER CUT RELAY


    1. A017B6EE23

      Remove the starter cut relay from the engine room relay block.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      Engine room relay block starter relay terminal 2 - B3-11 (STA) Always Below 1 Ω
      Engine room relay block starter relay terminal 2 or B3-11 (STA) - Body ground Always 10 kΩ or higher

  21. Click here

    CHECK HARNESS AND CONNECTOR (STARTER CUT RELAY - ECM)


    1. A017ELUE01

      Disconnect the B2 connector from the ECM.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      Engine room relay block starter cut relay terminal 5 - B2-8 (STAR) Always Below 1 Ω
      Engine room relay block starter cut relay terminal 5 or B2-8 (STAR) - Body ground Always 10 kΩ or higher

  22. Click here

    CHECK HARNESS AND CONNECTOR (STARTER CUT RELAY - MAIN BODY ECU)


    1. A017DSDE02

      Disconnect the D9 connector from the main body ECU.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      Engine room relay block starter cut relay terminal 5 - D9-6 (STR2) Always Below 1 Ω
      Engine room relay block starter cut relay terminal 5 or D9-6 (STR2) - Body ground Always 10 kΩ or higher

  23. Click here

    CHECK HARNESS AND CONNECTOR (ECM - STARTER RELAY)


    1. A017B8XE01

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

      Standard resistance
      Tester Connection Condition Specified Condition
      Engine room relay block starter relay terminal 2 - B3-11 (STA) Always Below 1 Ω
      Engine room relay block starter relay terminal 2 or B3-11 (STA) - Body ground Always 10 kΩ or higher

  24. Click here

    ECU CODE REGISTRATION


    1. Register the ECU code.


  25. Click here

    CHECK CRANKING FUNCTION


    1. Check the engine cranking function.


      1. When there is fuel in the fuel tank, the key is inside the vehicle, and the shift lever is in the P position, check that depressing the brake pedal and pressing the engine switch cranks the engine.

        Result
        Result Proceed to
        Engine does not crank A
        Engine cranks B

  26. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU)


    1. Replace the certification ECU (smart key ECU assembly).


  27. Click here

    KEY REGISTRATION


    1. Register the key.


  28. Click here

    CHECK CRANKING FUNCTION


    1. Check the engine cranking function.


      1. When there is fuel in the fuel tank, the key is inside the vehicle, and the shift lever is in the P position, check that depressing the brake pedal and pressing the engine switch cranks the engine.

        Result
        Result Proceed to
        Engine does not crank A
        Engine cranks B

  29. Click here

    ECU CODE REGISTRATION


    1. Register the ECU code.


  30. Click here

    CHECK CRANKING FUNCTION


    1. Check the engine cranking function.


      1. When there is fuel in the fuel tank, the key is inside the vehicle, and the shift lever is in the P position, check that depressing the brake pedal and pressing the engine switch cranks the engine.

        Result
        Result Proceed to
        Engine does not crank A
        Engine cranks B

  31. Click here

    REPLACE STEERING LOCK ECU


    1. Replace the steering lock ECU (Click here).


  32. Click here

    ECU CODE REGISTRATION


    1. Register the ECU code.


  33. Click here

    CHECK CRANKING FUNCTION


    1. Check the engine cranking function.


      1. When there is fuel in the fuel tank, the key is inside the vehicle, and the shift lever is in the P position, check that depressing the brake pedal and pressing the engine switch cranks the engine.

        Result
        Result Proceed to
        Engine does not crank A
        Engine cranks B

  34. Click here

    READ VALUE USING INTELLIGENT TESTER (ENGINE START REQUEST)


    1. Connect the intelligent tester to the DLC3.

      Tip:

      When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

    2. Turn the engine switch on (IG).

      Table 7. Smart key:
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Start Rqst Start request signal response / OK or NG

      OK: Received

      NG: Not received

      		 -
      OK
      "OK" (received) and "NG" (not received) appear on the screen.

  35. Click here

    GO TO OTHER FLOW CHARTClick here

  36. Click here

    GO TO DIAGNOSTIC TROUBLE CODE CHART (SMART ENTRY AND START SYSTEM (STARTING))Click here

  37. Click here

    GO TO DIAGNOSTIC TROUBLE CODE CHART (STEERING LOCK SYSTEM)Click here

  38. Click here

    GO TO DIAGNOSTIC TROUBLE CODE CHART (ENGINE IMMOBILISER SYSTEM)Click here

  39. Click here

    GO TO DIAGNOSTIC TROUBLE CODE CHART (VEHICLE STABILITY CONTROL SYSTEM)Click here

  40. Click here

    GO TO SFI SYSTEMClick here

  41. Click here

    REPLACE STARTER RELAY

  42. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE FUSE

  43. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY - STARTER)

  44. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - STARTER)

  45. Click here

    REPLACE STARTER ASSEMBLYClick here

  46. Click here

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  47. Click here

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  48. Click here

    REPLACE PARK/NEUTRAL POSITION SWITCHClick here

  49. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU - PARK/NEUTRAL POSITION SWITCH)

  50. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)

  51. Click here

    REPLACE STARTER RELAY

  52. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - STARTER RELAY)

  53. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY - BODY GROUND)

  54. Click here

    REPLACE STARTER CUT RELAY

  55. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER CUT RELAY - ECM)

  56. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER CUT RELAY - MAIN BODY ECU)

  57. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - STARTER RELAY)

  58. Click here

    REPLACE ECMClick here

  59. Click here

    END (ECU CODE DEFECTIVE)

  60. Click here

    END

  61. Click here

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  62. Click here

    END

  63. Click here

    END

  64. Click here

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  65. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  66. Click here

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)