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

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Trouble Codes.
5. Read the DTCs.

   Result

   Result	Proceed to
   DTC P2121 is output	A
   DTC P2121 and other DTCs are output	B

   HINT: 

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

B → See step   6 

A: Go to next step 

1. Connect Techstream to the DLC3.
   Fig 1: Identifying Accelerator Pedal Depressed & Released

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2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Accel Sensor Out No. 1 and Accel Sensor Out No. 2.
5. Read the values displayed on the Techstream.

   Standard voltage

   Accelerator Pedal Operations	Accel Sensor Out No. 1	Accel Sensor Out No. 2	Difference between Accel Sensor Out No. 1 and Accel Sensor Out No. 2
   Released	0.5 to 1.1 V	1.2 to 2.0 V	0.4 to 1.2 V
   Fully Depressed	2.6 to 4.5 V	3.4 to 4.8 V

NG → See step   3 

OK → See step   7 

1. Replace the accelerator pedal sensor assembly. Refer to REMOVAL .

NEXT: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Clear DTCs. Refer to DTC CHECK / CLEAR .
5. Start the engine.
6. Allow the engine to idle for 15 seconds.
7. Enter the following menus: Powertrain / Engine / Trouble Codes.
8. Read the DTCs.

   Result

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

B → END 

A → See step   5