Inspection Procedure

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

HINT:

This DTC relates to the Accelerator Pedal Position (APP) sensor.
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON.
Turn the tester ON.
Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
Read DTCs.

Result

RESULT CHART

Display (DTC Output)	Proceed to
P2121	A
P2121 and other DTCs	B

HINT:

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

A: GO to Next Step

READ VALUE USING INTELLIGENT TESTER (ACCEL POS #1 AND ACCEL POS #2)

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON and turn the tester ON.
Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ACCEL POS #1 and ACCEL POS #2.
Read the values displayed on the tester.

Standard voltage

ACCELERATOR PEDAL REFERENCE CHART

Accelerator Pedal Operations	ACCEL POS #1	ACCEL POS #2
Released	0.5 to 1.1V	1.2 to 2.0 V
Depressed	2.6 to 4.5 V	3.4 to 4.7 V

OK: CHECK FOR INTERMITTENT PROBLEMS

Fig 1: Identifying Accelerator Pedal Depressed And Released Position

NG: GO to Next Step

CHECK WHETHER DTC OUTPUT RECURS (DTC P2121)

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON and turn the tester ON.
Clear DTCs (see DTC CHECK/CLEAR ).
Start the engine.
Allow the engine to idle for 15 seconds.
Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
Read DTCs.

Result

RESULT CHART

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

B: SYSTEM OK

A: REPLACE ECM