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Home >> Lexus >> 2017 >> LS 460 Base, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (P1603-U0319) >> SFI System >> DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance [09/2015 - ] >> Procedure

DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance [09/2015 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR) 

    See step  1

    Result:  OK

    OK 

    See step  3

    Result:  NG

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM) 

    See step  2

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  3

  3. REPLACE ACCELERATOR PEDAL ROD ASSEMBLY 
    1. Replace the accelerator pedal rod assembly (Refer to REMOVAL [09/2015 - ] ).

    Result:  NEXT

    NEXT 

    See step  4

  4. CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL POSITION SENSOR DTCS) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the Techstream on.
    3. Clear DTCs (Refer to DTC CHECK / CLEAR [09/2015 - ] ).
    4. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    5. Enter the following menus: Powertrain / Engine / Trouble Codes.
    6. Read DTCs.

      Result

      Display (DTC Output) Proceed to
      P2121 A
      No output B

    Result:  A

    REPLACE ECM 

    (Refer to REMOVAL [09/2015 - ] )

    Result:  B

    SYSTEM OK