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 and ECT / Trouble Codes.
5. Read DTCs.
   RESULT
   
   

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

   HINT: 

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

B → See step   5 

A: Go to next step 

Fig 1: Depressing And Releasing Accelerator Pedal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Enter the following menus: Powertrain / Engine and ECT / Data List / ETCS / Accel Sensor Out No. 1 and Accel Sensor Out No. 2.
4. Read the values displayed on the Techstream.

   Standard Voltage

   Accelerator Pedal Operations	Accel Sensor Out No. 1	Accel Sensor Out No. 2
   Released	0.5 to 1.1 V	1.2 to 2.0 V
   Depressed	2.6 to 4.5 V	3.4 to 4.7 V

NG → See step   3 

OK → See step   6 

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

NEXT: Go to next step 

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 .
4. Start the engine.
5. Allow the engine to idle for 15 seconds.
6. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
7. Read DTCs.
   RESULT
   
   

   Result	Proceed to
   P2121 is output	A
   No DTC is output	B

B → SYSTEM OK 

A → See step   7