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Home >> Toyota >> 2006 >> Prius >> Repair and Diagnosis >> Engine Performance >> Engine Control System (1NZ-FXE) >> 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 intelligent tester. Freeze frame data records the engine condition when malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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 
    1. Connect an intelligent tester to the DLC3.
    2. Turn the power switch on (IG) and turn the tester on.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read DTCs.

      Result 

      RESULT REFERENCE

      Display (DTC output) Proceed To
      P0121 A
      P0121 and other DTCs B

    B : GO TO RELEVANT DTC CHART 

    A : REPLACE THROTTLE W/MOTOR BODY ASSEMBLY