DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance [12/2012 - ]: 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 and ECT / Trouble Codes.
5. Read the DTCs.

   Powertrain > Engine and ECT > Trouble Codes 

   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.

Result: 

B 

GO TO DTC CHART:  DIAGNOSTIC TROUBLE CODE CHART [12/2012 - 11/2013]  ,  DIAGNOSTIC TROUBLE CODE CHART [11/2013 - 08/2014]  ,  DIAGNOSTIC TROUBLE CODE CHART [08/2014 - 10/2015]  ,  DIAGNOSTIC TROUBLE CODE CHART [10/2015 - 08/2016]  ,  DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 08/2017]  ,  DIAGNOSTIC TROUBLE CODE CHART [08/2017 - ] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Fully Depressed
   *b	Fully Released

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

   Powertrain > Engine and ECT > 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

Result: 

OK 

CHECK FOR INTERMITTENT PROBLEMS:  CHECK FOR INTERMITTENT PROBLEMS [12/2012 - ] 

Result: 

NG 

See step  3

1. Replace the accelerator pedal sensor assembly.

   Refer to REMOVAL [12/2012 - ]

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 [12/2012 - ]

   Powertrain > Engine and ECT > Clear DTCs 

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

    Powertrain > Engine and ECT > Trouble Codes 

    Result

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

Result: 

A 

REPLACE ECM:  REMOVAL [12/2012 - ] 

Result: 

B 

END