Pinpoint Tests RL: Fuel Vaporizer System: 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:

fuel vaporizer system fuel pump
fuel vaporizer system glow plug
harness circuits: GND, VGPPWR, VGPRC, VPC and VPWR

PCM (12A650)

Fig 1: Identifying Fuel Vaporizer System Fuel Pump Assembly Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	VPC (Vaporizer Pump Control)
1	VPWR (Vehicle Power)

Fig 2: Identifying Fuel Vaporizer System Glow Plug Assembly Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
1	GND (Ground)
2	VGPPWR (Vaporizer Glow Plug Power)

Fig 3: Identifying Fuel Vaporizer System Glow Plug Relay Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
5	VGPPWR (Vaporizer Glow Plug Power)
2	VGPRC (Vaporizer Glow Plug Relay Control)
1, 3	VPWR (Vehicle Power)

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

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	VPC (Vaporizer Pump Control)
26	VGPRM (Vaporizer Glow Plug Relay Monitor)
28	VGPRC (Vaporizer Glow Plug Relay Control)