DTC P2121 Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance: Wiring Diagram

Refer to DTC P2120  ).

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are 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 (IN ADDITION TO DTC P2121) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON.
   3. Turn the tester ON.
   4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   5. Read DTCs.

      Result 

   RESULT CHART
   
   

   Display (DTC Output)	Proceed to
   P2121	A
   P2121 and other DTCs	B

   HINT:

   If any DTCs other than P2121 are output, troubleshoot those DTCs first.

   NG : GO TO DTC CHART 

   A : Go to next step 

2. REPLACE ACCELERATOR PEDAL ASSEMBLY 
   1. Replace accelerator pedal assembly (see ).

   NEXT 

3. CHECK WHETHER DTC OUTPUT RECURS (DTC P2121) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON.
   3. Turn the tester ON.
   4. Clear DTCs (see DTC CHECK / CLEAR  ).
   5. Allow the engine to idle for a minute.
   6. Rev up the engine several times.
   7. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   8. Read DTCs.

      Result 

   RESULT CHART
   
   

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

   B : CHECK FOR INTERMITTENT PROBLEMS 

   A : REPLACE ECM