Pinpoint Tests RH: Reductant Heater: Introduction

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 heaters
harness circuits: RDHTRC1, RDHTRC2, and RDHTRPWR
glow plug control module GPCM

Fig 1: Identifying Reductant Heater And Sender Assembly Connector
Courtesy of FORD MOTOR CO.

Fig 2: Identifying Reductant Pump Assembly Connector
Courtesy of FORD MOTOR CO.

Fig 3: Identifying Reductant Pressure Line Heater Assembly Connector
Courtesy of FORD MOTOR CO.

Fig 4: Identifying Reductant Heater Relay Connector
Courtesy of FORD MOTOR CO.

Fig 5: Identifying Glow Plug Control Module-C (GPCM-C) Connector

Courtesy of FORD MOTOR CO.