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

DESCRIPTION

• w/ Stop and Start System




• While the engine is being cranked, current flows from terminal STA2 of the engine stop and start ECU to terminal STA of the ECM (STA signal).

• w/o Stop and Start System




• While the engine is being cranked, current flows from terminal STAR of the certification ECU (smart key ECU assembly) to the park/neutral position switch assembly and to terminal STA of the ECM (STA signal).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

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 (w/ Stop and Start System) B Engine can be cranked (w/o Stop and Start System) C

   
   

   B

   READ VALUE USING GTS (STARTER SW) Click here

   C

   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 cranked.

      OK
      Condition GTS Display (Starter SW) Engine switch on (IG) OFF Cranking position ON

      Result
      Result Proceed to OK (w/ Stop and Start System) A OK (w/o Stop and Start System) B NG (w/ Stop and Start System) C NG (w/o Stop and Start System) D

   
   

   B

   INSPECT RELAY (ST NO. 1 RELAY) Click here

   C

   CHECK STOP AND START SYSTEM Click here

   D

   INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

   A

3. INSPECT RELAY (ST NO. 2 RELAY)

   
   

   1. Inspect the ST NO. 2 relay.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE RELAY (ST NO. 2 RELAY)

   OK

4. 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

5. INSPECT STARTER ASSEMBLY

   
   

   1. Inspect the starter assembly.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE STARTER ASSEMBLY Click here

   OK

6. CHECK HARNESS AND CONNECTOR (ST NO. 2 RELAY - STARTER ASSEMBLY)

   
   

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

   2. Disconnect the starter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 3 (ST NO. 2 relay) - F86-1 (SL2) Always Below 1 Ω 3 (ST NO. 2 relay) or F86-1 (SL2) - 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. 2 RELAY - ECM)

   
   

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

   2. Disconnect the ECM connector.

   3. Disconnect the engine stop and start ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 2 (ST NO. 2 relay) - A91-29 (STA) Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

8. CHECK HARNESS AND CONNECTOR (ST NO. 2 RELAY - BODY GROUND)

   
   

   1. Remove the ST NO. 2 relay from the No. 1 engine room relay block and No. 1 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. 2 relay) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

9. CHECK HARNESS AND CONNECTOR (BATTERY - ST NO. 2 RELAY)

   
   

   1. Remove the ST NO. 2 relay from the No. 1 engine room relay block and No. 1 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. 2 relay) - Body ground Always 11 to 14 V

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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

    
    

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

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

11. 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 No. 1 junction block assembly.

    2. Disconnect the starter assembly connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition 3 (ST NO. 1 relay) - F86-2 (SL1) Always Below 1 Ω 3 (ST NO. 1 relay) or F86-2 (SL1) - Body ground and other terminals Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

12. 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 No. 1 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

    
    

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

13. 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

14. INSPECT STARTER ASSEMBLY

    
    

    1. Inspect the starter assembly.

       Click here

       Result
       Proceed to OK NG

    
    

    NG

    REPLACE STARTER ASSEMBLY Click here

    OK

15. 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 No. 1 junction block assembly.

    2. Disconnect the starter assembly connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition 3 (ST NO. 1 relay) - F18-1 (ST) Always Below 1 Ω 3 (ST NO. 1 relay) or F18-1 (ST) - Body ground and other terminals Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

16. 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 No. 1 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

17. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ST NO. 1 RELAY)

    
    

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

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

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

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

       Standard Resistance
       Tester Connection Condition Specified Condition F80-5 (L) - 2 (ST NO. 1 relay) Always Below 1 Ω A13-12 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω

       Result
       Proceed to OK NG

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    
    

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

19. CHECK STOP AND START SYSTEM

    
    

    1. Check the stop and start system.

       Click here

       Result
       Proceed to OK NG

    
    

    OK

    CHECK ENTRY AND START SYSTEM Click here

    NG

    REPAIR OR REPLACE STOP AND START SYSTEM

20. 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

21. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM - ST NO. 1 RELAY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

    
    

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

    2. Disconnect the ECM connector.

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

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

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

       Standard Resistance
       Tester Connection Condition Specified Condition F80-5 (L) - A91-29 (STA) Always Below 1 Ω F80-5 (L), A91-29 (STA),2 (ST NO. 1 relay) or A13-12 (STA) - Body ground and other terminals Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    
    

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

    2. Disconnect the park/neutral position 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 A13-10 (STAR) - F80-4 (B) Always Below 1 Ω A13-10 (STAR) - A91-57 (NSW) Always Below 1 Ω A13-10 (STAR), F80-4 (B) or A91-57 (NSW) - Body ground and other terminals Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    

    OK

    CHECK ENTRY AND START SYSTEM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

23. 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 cranked.

       OK
       Condition GTS Display (Starter SW) Engine switch on (IG) 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. 2 RELAY - ECM)

24. 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 cranked.

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