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Home >> Lexus >> 2007 >> GX 470 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC P0657 - P2A03 >> DTC P2111, P2112: Throttle Actuator Control System - Stuck Open; Throttle Actuator Control System - Stuck Closed >> Inspection Procedure
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Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112) 
    1. Connect the intelligent tester to the DLC3 with CAN VIM.
    2. Turn the ignition switch ON and turn the intelligent tester ON.
    3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read the DTCs.

      Result 

      RESULT REFERENCE

      Display (DTC Output) Proceed to
      P2111 or P2112 A
      P2111 or P2112 and other DTCs B

      HINT:

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

    B: GO TO  DIAGNOSTIC TROUBLE CODE TABLE 

    A: Go to next step 

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

      OK: 

      No foreign matter between the throttle valve and the housing, and throttle valve can move smoothly. 

    NG: REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY 

    OK: Go to next step 

  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) 
    1. Connect the intelligent tester to the DLC3 with CAN VIM.
    2. Turn the ignition switch ON and turn the intelligent tester ON.
    3. Clear the DTC (See DTC CHECK/CLEAR ).
    4. Start the engine, and depress and release the accelerator pedal quickly (fully open and close the throttle valve).
    5. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    6. Read DTC.

      Result 

      RESULT REFERENCE

      Display (DTC Output) Proceed to
      No DTC A
      P2111 and/or P2112 B

    B: REPLACE ECM 

    A: CHECK FOR INTERMITTENT PROBLEMS