Pinpoint Tests AF: Glow Plug System: Introduction

NOTE: The wait-to-start indicator ON time is independent from the glow plug control module (GPCM).

NOTE: Make sure the vehicle batteries are fully charged prior to carrying out the glow plug monitor self-test.

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:

harness circuits: glow plug, CAN2+, CAN2-, ISP-R, PWRGND, VBATT, and VPWR
glow plugs (12A342)
GPCM (12B533)

Fig 1: Glow Plug Control Module-A (GPCM-A) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit Connect	A	2 1 3 4	Glow Plug Number 4 Glow Plug Number 3 Glow Plug Number 2 Glow Plug Number 1
All other vehicles	B	1	VBATT

Fig 2: Glow Plug Control Module-B (GPCM-B) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2, 4	VBATT (Battery Voltage)

Fig 3: Glow Plug Control Module-B (GPCM-B) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-150	A	9 8 27 7 29 30 25 13 11 10 6	CAN2- CAN2+ PWRGND ISP-R VPWR Glow Plug Number 6 Glow Plug Number 5 Glow Plug Number 4 Glow Plug Number 3 Glow Plug Number 2 Glow Plug Number 1
All other vehicles	A	9 8 27 7 29 34 31 30 25 13 11 10 6	CAN2- CAN2+ PWRGND ISP-R VPWR Glow Plug Number 8 Glow Plug Number 7 Glow Plug Number 6 Glow Plug Number 5 Glow Plug Number 4 Glow Plug Number 3 Glow Plug Number 2 Glow Plug Number 1

Fig 4: Glow Plug Control Module-C (GPCM-C) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
3	CAN2- (Controller Area Network 2)
2	CAN2+ (Controller Area Network 2)
9	PWRGND (Power Ground)
10	ISP-R (Ignition Switch Position Run)
8	VPWR (Vehicle Power)

Fig 5: Powertrain Control Module-B (PCM-B) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit Connect	A	84 65	CAN2- CAN2+
All other vehicles	B	15 14	CAN2- CAN2+