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Home >> Lexus >> 2017 >> RC 350 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FSE) - Diagnostic Codes (4 Of 5) >> SFI System >> DTC P2111: Throttle Actuator Control System - Stuck Open; DTC P2112: Throttle Actuator Control System - Stuck Closed [09/2014 - 11/2017] >> Procedure
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DTC P2111: Throttle Actuator Control System - Stuck Open; DTC P2112: Throttle Actuator Control System - Stuck Closed [09/2014 - 11/2017]: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    5. Read the DTCs.

      Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]

      Powertrain > Engine > Trouble Codes 

      Result

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

      HINT: 

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

    Result: 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 10/2015]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2015 - 08/2016]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 11/2017] 

    Result: 

    See step  2

  2. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) 
    1. Check for contamination between the throttle valve and housing. If necessary, clean the throttle body with motor assembly. Also check that the throttle valve moves smoothly.

      OK

      Throttle valve is not contaminated with foreign matter and moves smoothly.

      HINT: 

      Perform "Inspection After Repair" after cleaning the throttle body with motor assembly.

      Refer to INITIALIZATION [09/2014 - 11/2017]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  5

    Result: 

    OK 

    See step  3

  3. READ VALUE USING TECHSTREAM (THROTTLE POSITION) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]

      Powertrain > Engine > Clear DTCs 

    5. Turn the engine switch off and wait for at least 30 seconds.
    6. Turn the engine switch on (IG) and turn the Techstream on.
    7. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas Throttle / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.

      Powertrain > Engine > Data List 

      Tester Display
      Throttle Position No. 1
      Throttle Position No. 2
      Throttle Position Command
    8. Read the values displayed on the Techstream while wiggling the ECM wire harness.
    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    10. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

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

    Result: 

    See step  6

    Result: 

    See step  4

  4. REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - THROTTLE BODY WITH MOTOR 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.

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2014 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

  5. REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY 
    1. Replace the throttle body with motor assembly.

      Refer to REMOVAL [09/2014 - 10/2015] , or refer to REMOVAL [10/2015 - 11/2017]

      HINT: 

      Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

      Refer to INITIALIZATION [09/2014 - 11/2017]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]

      Powertrain > Engine > Clear DTCs 

    5. Turn the engine switch off and wait for at least 30 seconds.
    6. Turn the engine switch on (IG).
    7. Turn the Techstream on.
    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    10. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

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

    Result: 

    END 

    Result: 

    REPLACE ECM. Refer to  REMOVAL [09/2014 - 11/2017]