SFI SYSTEM Starter Signal Circuit

DESCRIPTION


WIRING DIAGRAM

A01VLS3E01
A01VLS3E02

CAUTION / NOTICE / HINT

Note


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

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 INTELLIGENT TESTER (STARTER SIGNAL) Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

    5. Read the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK
      Ignition Switch Position Starter Signal
      ON Close (OFF)
      START Open (ON)
      Result
      Result Proceed to
      OK (w/ Stop and Start System) A
      NG (w/ Stop and Start System) B
      OK (w/o Stop and Start System) C
      NG (w/o Stop and Start System) D

    B

    READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL) Click here

    C

    CHECK ST RELAY (POWER SOURCE) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL) Click here

    A

  3. CHECK ST RELAY (POWER SOURCE)


    1. A01VLZ6E01
      Text in Illustration
      *1 Engine Room Relay Block
      *2 ST Relay Holder

      Remove the ST relay from the engine room relay block.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      5 (ST relay holder) - Body ground Always 11 to 14 V
      Result
      Result Proceed to
      OK (for Manual Transaxle) A
      OK (for CVT) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (ECM - ST RELAY - BODY GROUND) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - BATTERY)

    A

  4. CHECK HARNESS AND CONNECTOR (ECM - ST RELAY - BODY GROUND)


    1. Disconnect the ECM connector.

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

    3. Disconnect the engine stop and start ECU connector.

    4. Disconnect the clutch start switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      1 (ST relay holder) - Body ground Always Below 1 Ω
      A58-22 (STA) or 2 (ST relay holder) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (ECM - ST RELAY - BODY GROUND)


    1. Disconnect the ECM connector.

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

    3. Disconnect the engine stop and start ECU connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      1 (ST relay holder) - Body ground Always Below 1 Ω
      A58-22 (STA) or 2 (ST relay holder) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)


    1. Disconnect the engine stop and start ECU connector.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the tester on.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

    6. Read the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK
      Ignition Switch Position Starter Signal
      ON Close (OFF)
      START Open (ON)
      Result
      Result Proceed to
      NG A
      OK B

    B

    REPLACE ENGINE STOP AND START ECU Click here

    A

  7. INSPECT IGNITION SWITCH ASSEMBLY


    1. Inspect the ignition switch assembly Click here.

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

    B

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    REPLACE IGNITION SWITCH ASSEMBLY Click here

    A

  8. INSPECT CLUTCH START SWITCH ASSEMBLY


    1. Inspect the clutch start switch assembly Click here.


    NG

    REPLACE CLUTCH START SWITCH ASSEMBLY Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (ECM - CLUTCH START SWITCH ASSEMBLY - IGNITION SWITCH ASSEMBLY - ENGINE STOP AND START ECU)


    1. Disconnect the ECM connector.

    2. Disconnect the clutch start switch assembly connector.

    3. Disconnect the ignition switch assembly connector.

    4. Disconnect the engine stop and start ECU connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B22-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B22-63 (NSW) - A39-2 Always Below 1 Ω
      B22-63 (NSW) - A53-6 (CLL) Always Below 1 Ω
      B22-63 (NSW), F13-7 (ST2), A39-2 or A53-6 (CLL) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B23-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B23-63 (NSW) - A39-2 Always Below 1 Ω
      B23-63 (NSW) - A53-6 (CLL) Always Below 1 Ω
      B23-63 (NSW), F13-7 (ST2), A39-2 or A53-6 (CLL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (ECM - CLUTCH START SWITCH ASSEMBLY - ST RELAY - ENGINE STOP AND START ECU)


    1. Disconnect the ECM connector.

    2. Disconnect the clutch start switch assembly connector.

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

    4. Disconnect the engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - A39-1 Always Below 1 Ω
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      A58-22 (STA) - A53-4 (STA) Always Below 1 Ω
      A58-22 (STA), A39-1, 2 (ST relay holder) or A53-4 (STA) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    CHECK IGNITION SWITCH ASSEMBLY (POWER SOURCE) Click here

  11. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly Click here.


    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - IGNITION SWITCH ASSEMBLY- ENGINE STOP AND START ECU)


    1. Disconnect the ECM connector.

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

    3. Disconnect the ignition switch assembly connector.

    4. Disconnect the engine stop and start ECU connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B22-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B22-63 (NSW) - B69-4(B) Always Below 1 Ω
      B22-63 (NSW) - A53-6 (CLL) Always Below 1 Ω
      B22-63 (NSW), F13-7 (ST2), B69-4 (B) or A53-6 (CLL) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B23-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B23-63 (NSW) - B69-4(B) Always Below 1 Ω
      B23-63 (NSW) - A53-6 (CLL) Always Below 1 Ω
      B23-63 (NSW), F13-7 (ST2), B69-4(B) or A53-6 (CLL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the ECM connector.

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

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

    4. Disconnect the engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - B69-9 (L) Always Below 1 Ω
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      A58-22 (STA) - A53-4 (STA) Always Below 1 Ω
      A58-22 (STA), B69-9 (L), 2 (ST relay holder) or A53-4 (STA) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. CHECK IGNITION SWITCH ASSEMBLY (POWER SOURCE)

    A01VJSIE01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Ignition Switch Assembly)

    1. Disconnect the ignition switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F13-5 (AM2) - Body ground Always 11 to 14 V

    OK

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

    NG

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

  15. CHECK ST RELAY (POWER SOURCE)


    1. A01VLZ6E01
      Text in Illustration
      *1 Engine Room Relay Block
      *2 ST Relay Holder

      Remove the ST relay from the engine room relay block.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      5(ST relay holder) - Body ground Always 11 to 14 V
      Result
      Result Proceed to
      OK (for Manual Transaxle) A
      OK (for CVT) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (ECM - ST RELAY - BODY GROUND) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - BATTERY)

    A

  16. CHECK HARNESS AND CONNECTOR (ECM - ST RELAY - BODY GROUND)


    1. Disconnect the ECM connector.

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

    3. Disconnect the power management control ECU connector.

    4. Disconnect the clutch start switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      1 (ST relay holder) - Body ground Always Below 1 Ω
      A58-22 (STA) or 2 (ST relay holder) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  17. CHECK HARNESS AND CONNECTOR (ECM - ST RELAY - BODY GROUND)


    1. Disconnect the ECM connector.

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

    3. Disconnect the power management control ECU connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      1 (ST relay holder) - Body ground Always Below 1 Ω
      A58-22 (STA) or 2 (ST relay holder) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  18. READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)


    1. Disconnect the power management control ECU connector.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the tester on.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

    6. Read the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK
      Ignition Switch Position Starter Signal
      ON Close (OFF)
      START Open (ON)
      Result
      Result Proceed to
      NG A
      OK B

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    A

  19. INSPECT IGNITION SWITCH ASSEMBLY


    1. Inspect the ignition switch assembly Click here.

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

    B

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    REPLACE IGNITION SWITCH ASSEMBLY Click here

    A

  20. INSPECT CLUTCH START SWITCH ASSEMBLY


    1. Inspect the clutch start switch assembly Click here.


    NG

    REPLACE CLUTCH START SWITCH ASSEMBLY Click here

    OK

  21. CHECK HARNESS AND CONNECTOR (ECM - CLUTCH START SWITCH ASSEMBLY - IGNITION SWITCH ASSEMBLY)


    1. Disconnect the ECM connector.

    2. Disconnect the clutch start switch assembly connector.

    3. Disconnect the ignition switch assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B22-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B22-63 (NSW) - A39-2 Always Below 1 Ω
      B22-63 (NSW), F13-7 (ST2) or A39-2 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B23-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B23-63 (NSW) - A39-2 Always Below 1 Ω
      B23-63 (NSW), F13-7 (ST2) or A39-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  22. CHECK HARNESS AND CONNECTOR (ECM - CLUTCH START SWITCH ASSEMBLY - ST RELAY - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the ECM connector.

    2. Disconnect the clutch start switch assembly connector.

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

    4. Disconnect the power management control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - A39-1 Always Below 1 Ω
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      A58-22 (STA) - A52-5 (STA) Always Below 1 Ω
      A58-22 (STA), A39-1, 2 (ST relay holder) or A52-5 (STA) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    CHECK IGNITION SWITCH ASSEMBLY (POWER SOURCE) Click here

  23. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly Click here.


    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  24. CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - IGNITION SWITCH ASSEMBLY)


    1. Disconnect the ECM connector.

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

    3. Disconnect the ignition switch assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B22-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B22-63 (NSW) - B69-4 (B) Always Below 1 Ω
      B22-63 (NSW), F13-7 (ST2) or B69-4 (B) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B23-63 (NSW) - F13-7 (ST2) Always Below 1 Ω
      B23-63 (NSW) - B69-4 (B) Always Below 1 Ω
      B23-63 (NSW), F13-7 (ST2) or B69-4(B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  25. CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH - ST RELAY - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the ECM connector.

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

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

    4. Disconnect the power management control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - B69-9 (L) Always Below 1 Ω
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω
      A58-22 (STA) - A52-5 (STA) Always Below 1 Ω
      A58-22 (STA), B69-9 (L), 2 (ST relay holder) or A52-5 (STA) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  26. CHECK IGNITION SWITCH ASSEMBLY (POWER SOURCE)

    A01VJSIE01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Ignition Switch Assembly)

    1. Disconnect the ignition switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F13-5 (AM2) - Body ground Always 11 to 14 V

    OK

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

    NG

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

  27. READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

    5. Read the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK
      Ignition Switch Position Starter Signal
      ON Close (OFF)
      START Open (ON)
      Result
      Result Proceed to
      NG A
      OK B

    B

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

    A

  28. CHECK HARNESS AND CONNECTOR (ECM - ST RELAY)


    1. Disconnect the ECM connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (STA) - 2 (ST relay holder) Always Below 1 Ω

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR