SFI SYSTEM(w/o EGR System), Diagnostic DTC:P2111, P2112

DESCRIPTION

The throttle actuator is operated by the ECM, and opens and closes the throttle valve using gears. The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body assembly. The throttle position sensor provides feedback to the ECM so that the ECM can control the throttle actuator (throttle valve) appropriately in response to driver inputs.

MONITOR DESCRIPTION

The ECM determines that there is a malfunction in the electronic throttle control system when the throttle valve remains at a fixed angle despite a high drive current from the ECM. The ECM illuminates the MIL and stores a DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

CONFIRMATION DRIVING PATTERN

1. Connect the intelligent tester to the DLC3.

2. Turn the power switch on (IG) and turn the tester on.

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).

4. Turn the power switch off and wait for at least 30 seconds.

5. Turn the power switch on (IG) and turn the tester on [A].

6. Put the engine in inspection mode (maintenance mode) Click here.

7. Start the engine and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve).

8. Enter the following menus: Powertrain / Engine and ECT / DTC [B].

9. Read the pending DTCs.

   Tech Tips

   
   

   • If a pending DTC is output, the system is malfunctioning.

   • If a pending DTC is not output, perform the following procedure.

10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

11. Input the DTC: P2111 or P2112.

12. Check the DTC judgment result.

    Tester Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
    N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips

    
    

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

FAIL-SAFE

When either of these DTCs, as well as other DTCs relating to electronic throttle control system malfunctions is stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 5.5° throttle angle by the return spring. The ECM stops the engine and the vehicle can be driven using solely the hybrid system. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the power switch is then turned off.

WIRING DIAGRAM

Refer to DTC P2102 Click here.

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the tester on.

   4. Enter the following menus: Powertrain / Engine and ECT / DTC.

   5. Read the DTCs.

      Result

      Result	Proceed to
      DTC P2111 or P2112 is output	A
      DTC P2111 or P2112 and other DTCs are output	B

      Tech Tips

      If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first.

   
   

   B

   GO TO DTC CHART Click here

   A

2. INSPECT THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)

   
   

   1. Check for contamination between the throttle valve and housing. If necessary, clean the throttle body assembly. Also, check that the throttle valve moves smoothly.

      OK
      Throttle valve is not contaminated with foreign objects and moves smoothly.

   
   

   NG

   REPLACE THROTTLE BODY ASSEMBLY Click here

   OK

3. READ VALUE USING INTELLIGENT TESTER (THROTTLE POSITION)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the tester on.

   4. Clear the DTCs Click here.

   5. Turn the power switch off and wait for at least 30 seconds.

   6. Turn the power switch on (IG) and turn the tester on.

   7. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.

   8. Check the values displayed on the tester while wiggling the ECM wire harness.

   9. Enter the following menus: Powertrain / Engine and ECT / DTC.

   10. Read the DTCs.

       Result

       Result	Proceed to
       Value in Data List changes when wire harness is wiggled, or DTC is output	A
       Other than above	B

   
   

   B

   CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) Click here

   A

4. REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - THROTTLE BODY ASSEMBLY)

   
   

   1. As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector Click here.

   
   

   NEXT

   END

5. REPLACE THROTTLE BODY ASSEMBLY

   
   

   1. Replace the throttle body assembly Click here.

   
   

   NEXT

6. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the tester on.

   4. Clear the DTCs Click here.

   5. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

   6. Enter the following menus: Powertrain / Engine and ECT / DTC.

   7. Read the DTCs.

      Result

      Result	Proceed to
      DTC is not output	A
      DTC P2111 or P2112 is output	B

   
   

   A

   END

   B

   REPLACE ECM Click here