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 pump
reductant pump control module
harness circuits: RDPAP, RDPBP, RDPC, RDPCP, RDPGND, RDPM and VPWR
reductant dosage control module (5H298)
PCM (12A650)

Fig 1: Reductant Pump Assembly Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit Connect	A	4 3	RDPPWR RDPC
All other vehicles	B	11 16 8 15 7	GND RDPCP RDPBP GND RDPAP

Fig 2: Reductant Pump Control Module Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
7	RDPCP (Reductant Pump C Phase)
2	RDPBP (Reductant Pump B Phase)
6	RDPAP (Reductant Pump A Phase)
3	RDPM (Reductant Pump Monitor)
4	RDPC (Reductant Pump Control)
1, 8	GND (Ground)
5	VPWR (Vehicle Power)

Fig 3: Reductant Dosage Control Module Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
51	RDPPWR (Reductant Pump Power)
29	RDPC (Reductant Pump Control)

Fig 4: Powertrain Control Module-T (PCM-T) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
20	RDPM (Reductant Pump Monitor)
17	RDPC (Reductant Pump Control)

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Pinpoint Tests RG: Reductant Pump: Introduction

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?