DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance [12/2013 - 11/2016]: Procedure

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

   Powertrain > Engine > Trouble Codes 

   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.

Result: 

B 

GO TO DTC CHART. 

Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2013 - 08/2014] 

Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2014 - 11/2015] 

Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2016] 

Result: 

A 

See step  2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Gas Throttle / Accel Sensor Out No. 1 and Accel Sensor Out No. 2.

   Powertrain > Engine > Data List 

   Tester Display
   Accel Sensor Out No. 1
   Accel Sensor Out No. 2

5. Read the values displayed on the Techstream.

   Standard Voltage

   Accelerator Pedal Operation	Accel Sensor Out No. 1	Accel Sensor Out No. 2
   Fully Released	0.5 to 1.1 V	1.2 to 2.0 V
   Fully Depressed	2.6 to 4.5 V	3.4 to 4.75 V

   Proceed to
   OK
   NG

Result: 

OK 

CHECK FOR INTERMITTENT PROBLEMS. 

Refer to  CHECK FOR INTERMITTENT PROBLEMS [12/2013 - 11/2016] 

Result: 

NG 

See step  3

1. Replace the accelerator pedal sensor assembly.

   Refer to REMOVAL [12/2013 - 11/2016]

Result: 

NEXT 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [12/2013 - 11/2016]

   Powertrain > Engine > Clear DTCs 

5. Turn the ignition switch off and wait for at least 30 seconds.
6. Turn the ignition switch to ON and turn the Techstream on.
7. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
8. Enter the following menus: Powertrain / Engine / Trouble Codes.
9. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result	Proceed to
   DTC P2121 is output	A
   DTCs are not output	B

Result: 

A 

REPLACE ECM. 

Refer to  REMOVAL [12/2013 - 11/2016] 

Result: 

B 

END