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Home >> Toyota >> 2009 >> Tacoma Base, 4D Pickup, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System (1GR-FE) >> SFI System >> DTC P0121 Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem >> Inspection Procedure
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Inspection Procedure

HINT:

Read freeze frame data using the Techstream. Freeze frame data record the engine condition when malfunctions are detected. 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. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0121) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain/Engine and ECT/Trouble Codes.
    5. Read the DTC.

      Result 

      RESULT REFERENCE

      Result Proceed to
      P0121 A
      P0121 and other DTCs B

      B:  GO TO DTC CHART 

      A: REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY  (See ON-VEHICLE INSPECTION  )