Pinpoint Tests AG: Accelerator Pedal Position (APP) Sensor: Introduction

NOTE: After clearing an APP sensor DTC to verify a repair or an intermittent concern, apply the accelerator pedal before carrying out the self-test. Take 10 seconds to carry out a full sweep of the accelerator pedal from fully released to fully applied and back to fully released.

NOTE: Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.

This pinpoint test is intended to diagnose the following:

APP sensor (9F836)
harness circuits: APP1, APP2, APPRTN1, APPRTN2, APPVREF1, and APPVREF2

PCM (12A650)

Fig 1: Identifying Accelerator Pedal Position (APP) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
5	APP2 (Accelerator Pedal Position 2)
2	APP1 (Accelerator Pedal Position 1)
4	APPRTN2 (Accelerator Pedal Position Return 2)
6	APPVREF2 (Accelerator Pedal Position Reference Voltage 2)
3	APPRTN1 (Accelerator Pedal Position Return 1)
1	APPVREF1 (Accelerator Pedal Position Reference Voltage 1)

Fig 2: Identifying Powertrain Control Module-B (PCM-B) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit	A	19 20	APP2 APP1
All other vehicles	B	29 28	APP2 APP1