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Home >> Scion >> 2006 >> tC Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2AZ-FE) >> SFI System >> DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem >> Wiring Diagram

DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem: Wiring Diagram

Refer to DTC P0120  ).

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a 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. READ OTHER DTC OUTPUT (IN ADDITION TO DTC P0121) 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read DTCs

    Result 

    RESULT CHART

    Display (DTC Output) Proceed to
    P0121 A
    P0121 and other DTCs B

    HINT:

    If any other codes besides P0121 are output, perform the troubleshooting for those codes first.

    B : GO TO RELEVANT DTC CHART 

    A : REPLACE THROTTLE BODY