Pinpoint Tests RE: Reductant Purge Valve: Introduction

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2022 Ford F-550 Super Duty, 2022 Ford F-450 Super Duty, 2022 Ford F-350 Super Duty, 2022 Ford F-250 Super Duty, and 2021 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

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:

reductant purge valve
harness circuits: RDPGC and VPWR
reductant dosage control module (5H298)

Fig 1: Reductant Purge Valve Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
1	VPWR (Vehicle Power)
2	RDPGC (Reductant Purge Control)

Fig 2: Reductant Dosage Control Module Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
50	RDPGC (Reductant Purge Control)

Fig 3: Reductant Pump Assembly Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
1	RDPGPWR (Reductant Purge Valve Power)
2	RDPGC (Reductant Purge Control)