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

WARNING: This page is about a different variant/trim than selected.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2121)

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 7

A: Go to next step

READ VALUE USING TECHSTREAM (ACCELERATOR PEDAL POSITION SENSOR)

Connect the Techstream to the DLC3.

Fig 1: Identifying Accelerator Pedal Depressed And Released Position
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Data List / All Data / Accel Sensor Out No. 1 and Accel Sensor Out No. 2.

Read the value displayed on the Techstream.

Standard Voltage

Accelerator Pedal Operation	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
Depressed	2.6 to 4.5 V	3.4 to 4.98 V	0.4 to 1.2 V

NG → See step 3

OK → See step 6

REPLACE ACCELERATOR PEDAL ROD ASSEMBLY
1. Replace the accelerator pedal rod assembly, refer to REMOVAL .
NEXT: Go to next step

CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL POSITION SENSOR DTCS)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear the DTCs, refer to DTC CHECK / CLEAR .
Turn the ignition switch off.
Turn the ignition switch to ON and turn the Techstream on.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Result

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

B → END

A → See step 5