SFI SYSTEM(w/ Canister Pump Module) Starter Signal Circuit

DESCRIPTION

While the engine is being cranked, current flows from terminal STAR of the certification ECU (smart key ECU assembly) to terminal STA of the ECM (STA signal).

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.

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 the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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


      Powertrain > Engine > Data List
      Tester Display
      Starter SW

    5. Check the value displayed on the GTS when the engine switch is turned on (IG) and the engine is started.

      OK
      Condition GTS Display (Starter SW)
      Engine switch on (IG) OFF
      Engine started ON
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (ECM - ST NO. 1 RELAY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Click here

    OK

  3. INSPECT ST NO. 1 RELAY


    1. Inspect the ST NO. 1 relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ST NO. 1 RELAY

    OK

  4. INSPECT STARTER ASSEMBLY


    1. Inspect the starter assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STARTER ASSEMBLY Click here

    OK

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


    1. Remove the ST NO. 1 relay from the No. 1 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 (for 2WD)
      Tester Connection Condition Specified Condition
      3 (ST NO. 1 relay) - D58-1 Always Below 1 Ω
      3 (ST NO. 1 relay) or D58-1 - Body ground and other terminals Always 10 kΩ or higher
      Standard Resistance (for AWD)
      Tester Connection Condition Specified Condition
      3 (ST NO. 1 relay) - D59-1 Always Below 1 Ω
      3 (ST NO. 1 relay) or D59-1 - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Remove the ST NO. 1 relay from the No. 1 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

  7. CHECK HARNESS AND CONNECTOR (BATTERY - STARTER ASSEMBLY)


    1. Disconnect the cable from the negative (-) battery terminal.

    2. Disconnect the cable from the positive (+) battery terminal.

    3. Disconnect the starter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Positive (+) battery terminal - D60-1 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ST NO. 1 RELAY)


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

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A22-9 (STAR) - 2 (ST NO. 1 relay) Always Below 1 Ω
      A22-20 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω
      A22-9 (STAR), A22-20 (STA) or 2 (ST NO. 1 relay) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR


    1. Remove the ST NO. 1 relay from the No. 1 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

    GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) Click here

    NG

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

  10. CHECK HARNESS AND CONNECTOR (ECM - ST NO. 1 RELAY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))


    1. Disconnect the ECM connector.

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

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A22-9 (STAR) - A95-16 (STA) Always Below 1 Ω
      A22-20 (STA) - A95-16 (STA) Always Below 1 Ω
      A95-16 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω
      A22-9 (STAR) or A95-16 (STA) - Body ground and other terminals Always 10 kΩ or higher
      A22-20 (STA) or A95-16 (STA) - Body ground and other terminals Always 10 kΩ or higher
      A95-16 (STA) or 2 (ST NO. 1 relay) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. 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: Powertrain / Engine / Data List / Starter SW.


      Powertrain > Engine > Data List
      Tester Display
      Starter SW

    5. Check the value displayed on the GTS when the engine switch is turned on (IG) and the engine is started.

      OK
      Condition GTS Display (Starter SW)
      Engine switch on (IG) OFF
      Engine started 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)