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Home >> Toyota >> 2009 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Control System (1AR-FE) - DTC P0705 - P2A00, DTC U0101) >> DTC P2111 Throttle Actuator Control System - Stuck Open; DTC P2112 Throttle Actuator Control System - Stuck Closed >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different variant/trim than selected.

HINT:

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

  1. INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) 
    1. Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly.

      OK: 

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

      NG: REPLACE THROTTLE BODY  (See REMOVAL )

      OK: Go to next step 

  2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs (See DTC CHECK/CLEAR ).
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON and turn the Techstream on.
    7. Start the engine.
    8. Fully Depress and release the accelerator pedal quickly (to fully open and close the throttle valve).
    9. Enter the following menus: Powertrain/Engine/Trouble Codes.
    10. Read the DTCs.

      Result 

      RESULT CHART

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

      B: REPLACE ECM  (See REMOVAL )

      A: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS )