SFI SYSTEM Starter Signal Circuit

DESCRIPTION



WIRING DIAGRAM

Refer to DTC P061512.

Click here

CAUTION / NOTICE / HINT

Note


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

  • After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • When the starter assembly is replaced, the number of starter operations stored in the engine stop and start ECU must be reset (w/ Stop and Start System).

    Click here

PROCEDURE


  1. CHECK WHETHER ENGINE CAN BE CRANKED


    1. Check if the engine can be cranked.

      Result
      Result Proceed to
      Engine cannot be cranked A
      Engine can be cranked B

    B

    READ VALUE USING GTS (STARTER SW) Click here

    A

  2. READ VALUE USING GTS (STARTER SW)


    1. Connect the GTS to DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / All Data / Starter SW.


      Powertrain > Engine > Data List
      Tester Display
      Starter SW

    5. Check the value displayed on the GTS when the ignition switch is turned to ON and the engine is started.

      OK
      Condition GTS Display (Starter SW)
      Ignition switch ON OFF
      Cranking position ON
      Result
      Result Proceed to
      OK A
      NG (for CVT models) B
      NG (for M/T models) C

    B

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    INSPECT CLUTCH START SWITCH ASSEMBLY Click here

    A

  3. INSPECT RELAY (ST NO. 1 RELAY)


    1. Inspect the ST NO. 1 relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RELAY (ST NO. 1 RELAY)

    OK

  4. INSPECT STARTER ASSEMBLY


    1. Inspect the starter assembly.

      w/o Stop and Start System: Click here

      for CVT models with Stop and Start System: Click here

      for M/T models with Stop and Start System: Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STARTER ASSEMBLY w/o Stop and Start System: Click here
    REPLACE STARTER ASSEMBLY for CVT models with Stop and Start System: Click here
    REPLACE STARTER ASSEMBLY for M/T models with Stop and Start System: Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - ECM)


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

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (ST NO. 1 relay) - A173-29 (STA) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - STARTER ASSEMBLY)


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

    2. Disconnect the starter assembly connector.

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

      Standard Resistance (w/ Stop and Start System)
      Tester Connection Condition Specified Condition
      3 (ST NO. 1 relay) - B209-2 Always Below 1 Ω
      3 (ST NO. 1 relay) or B209-2 - Body ground and other terminals Always 10 kΩ or higher
      Standard Resistance (w/o Stop and Start System)
      Tester Connection Condition Specified Condition
      3 (ST NO. 1 relay) - B8-1 Always Below 1 Ω
      3 (ST NO. 1 relay) or B8-1 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (ST NO. 1 RELAY - BODY GROUND)


    1. 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 (ST NO. 1 relay) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (BATTERY - ST NO. 1 RELAY)


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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      5 (ST NO. 1 relay) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - STARTER ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY VOLTAGE)


    1. Disconnect the park/neutral position switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      B110-4 (B) - Body ground Engine cranking position 11 to 14 V
      Result
      Result Proceed to
      OK (w/ Entry and Start System) A
      OK (w/o Entry and Start System) B
      NG (w/ Entry and Start System) C
      NG (w/o Entry and Start System) D

    B

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST NO. 1 RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM) Click here

    C

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - SMART KEY ECU ASSEMBLY - ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) Click here

    D

    INSPECT IGNITION OR STARTER SWITCH ASSEMBLY Click here

    A

  11. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - SMART KEY ECU ASSEMBLY - ST NO. 1 RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the smart key ECU assembly connector.

    3. Disconnect the park/neutral position switch assembly connector.

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

    5. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-21 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω
      E33-7 (STA) - B110-9 (L) Always Below 1 Ω
      2 (ST NO. 1 relay) - A173-29 (STA) Always Below 1 Ω
      A9-21 (STA), A173-29 (STA), E33-7 (STA), 2 (ST NO. 1 relay) or B110-9 (L) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK ENTRY AND START SYSTEM (FOR START FUNCTION) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST NO. 1 RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)


    1. Disconnect the engine stop and start ECU connector.

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

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

    4. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-21 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω
      2 (ST NO. 1 relay) - B110-9 (L) Always Below 1 Ω
      2 (ST NO. 1 relay) - A173-29 (STA) Always Below 1 Ω
      A9-21 (STA), A173-29 (STA), 2 (ST NO. 1 relay) or B110-9 (L) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK STOP AND START SYSTEM (STA SIGNAL) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - SMART KEY ECU ASSEMBLY - ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the smart key ECU assembly connector.

    3. Disconnect the park/neutral position switch assembly connector.

    4. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-28 (CLL) - A173-57 (NSW) Always Below 1 Ω
      A9-28 (CLL) - B110-4 (B) Always Below 1 Ω
      E33-5 (STAR) - B110-4 (B) Always Below 1 Ω
      A9-28 (CLL), A173-57 (NSW), E33-5 (STAR) or B110-4 (B) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK ENTRY AND START SYSTEM (FOR START FUNCTION) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY


    1. Inspect the ignition or starter switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE IGNITION OR STARTER SWITCH ASSEMBLY Click here

    OK

  15. CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY VOLTAGE)


    1. Disconnect the ignition or starter switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E4-4 (AM2) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ENGINE STOP AND START ECU - ECM)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION OR STARTER SWITCH ASSEMBLY)

  16. 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

  17. CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY VOLTAGE)


    1. Disconnect the clutch start switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A5-2 - Body ground Engine cranking position 11 to 14 V
      Result
      Result Proceed to
      OK (w/ Entry and Start System [w/ Stop and Start System]) A
      OK (w/ Entry and Start System [w/o Stop and Start System]) B
      OK (w/o Entry and Start System [w/ Stop and Start System]) C
      OK (w/o Entry and Start System [w/o Stop and Start System]) D
      NG (w/ Entry and Start System [w/ Stop and Start System]) E
      NG (w/ Entry and Start System [w/o Stop and Start System]) F
      NG (w/o Entry and Start System [w/ Stop and Start System]) G
      NG (w/o Entry and Start System [w/o Stop and Start System]) H

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - SMART KEY ECU ASSEMBLY - CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY)

    C

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY - ECM) Click here

    D

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - CLUTCH START SWITCH ASSEMBLY - ST NO. 1 RELAY)

    E

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - SMART KEY ECU ASSEMBLY - ECM - CLUTCH START SWITCH ASSEMBLY) Click here

    F

    CHECK HARNESS AND CONNECTOR (SMART KEY ECU ASSEMBLY - ECM - CLUTCH START SWITCH ASSEMBLY) Click here

    G

    INSPECT IGNITION OR STARTER SWITCH ASSEMBLY Click here

    H

    INSPECT IGNITION OR STARTER SWITCH ASSEMBLY Click here

    A

  18. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - SMART KEY ECU ASSEMBLY - ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY - ECM)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the smart key ECU assembly connector.

    3. Disconnect the clutch start switch assembly connector.

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

    5. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-21 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω
      E33-7 (STA) - A5-1 Always Below 1 Ω
      2 (ST NO. 1 relay) - A173-29 (STA) Always Below 1 Ω
      A9-21 (STA), A173-29 (STA), E33-7 (STA), 2 (ST NO. 1 relay) or A5-1 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK ENTRY AND START SYSTEM (FOR START FUNCTION) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  19. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - ST NO. 1 RELAY - CLUTCH START SWITCH ASSEMBLY - ECM)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the clutch start switch assembly connector.

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

    4. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-21 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω
      2 (ST NO. 1 relay) - A5-1 Always Below 1 Ω
      2 (ST NO. 1 relay) - A173-29 (STA) Always Below 1 Ω
      A9-21 (STA), A173-29 (STA), 2 (ST NO. 1 relay) or A5-1 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK STOP AND START SYSTEM (STA SIGNAL) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  20. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - SMART KEY ECU ASSEMBLY - ECM - CLUTCH START SWITCH ASSEMBLY)


    1. Disconnect the engine stop and start ECU connector.

    2. Disconnect the smart key ECU assembly connector.

    3. Disconnect the clutch start switch assembly connector.

    4. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-28 (CLL) - A5-2 Always Below 1 Ω
      A9-28 (CLL) - A173-57 (NSW) Always Below 1 Ω
      E33-5 (STAR) - A173-57 (NSW) Always Below 1 Ω
      A9-28 (CLL), A5-2, E33-5 (STAR) or A173-57 (NSW) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK ENTRY AND START SYSTEM (FOR START FUNCTION) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the smart key ECU assembly connector.

    2. Disconnect the clutch start switch assembly connector.

    3. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A173-57 (NSW) - A5-2 Always Below 1 Ω
      E33-5 (STAR) - A5-2 Always Below 1 Ω
      A173-57 (NSW), E33-5 (STAR) or A5-2 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK ENTRY AND START SYSTEM (FOR START FUNCTION) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  22. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY


    1. Inspect the ignition or starter switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE IGNITION OR STARTER SWITCH ASSEMBLY Click here

    OK

  23. CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY VOLTAGE)


    1. Disconnect the ignition or starter switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E4-4 (AM2) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - CLUTCH START SWITCH ASSEMBLY - ENGINE STOP AND START ECU - ECM)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  24. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY


    1. Inspect the ignition or starter switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE IGNITION OR STARTER SWITCH ASSEMBLY Click here

    OK

  25. CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY VOLTAGE)


    1. Disconnect the ignition or starter switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E4-4 (AM2) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - CLUTCH START SWITCH ASSEMBLY - ECM)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  26. READ VALUE USING GTS (STARTER SW)


    1. Connect the GTS to DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / All Data / Starter SW.


      Powertrain > Engine > Data List
      Tester Display
      Starter SW

    5. Check the value displayed on the GTS when the ignition switch is turned to ON and the engine is started.

      OK
      Condition GTS Display (Starter SW)
      Ignition switch ON OFF
      Cranking position ON
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ST NO. 1 RELAY - ECM)