PINPOINT TEST HU: Intake Air Systems: Introduction

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose the following:

accelerator cable linkage to throttle body (9C799)
air cleaner assembly (including air cleaner element) (9600)
air inlet tube (9F843)
clean air tube hose and resonator (9R504) and (9F593)
intake manifold runner control (IMRC) housing assembly (9U531), (9U524) and (9J447)
IMRC actuator assembly (9J559)
IMRC (9G730)
intake manifold tuning valve (IMTV) (9L490)
IMTV electric actuator assembly (9L490)
speed control cable (9A825)
throttle body assembly (9E926)
harness circuits: IMRC, MONITOR, SIGNAL, SIGRTN, PWRGND, and VPWR
harness circuits: IMTV, MONITOR, SIGNAL, and VPWR
powertrain control module (PCM) (12A650)

IMRCM VOLTAGE VALUES

VEHICLE	IMRC OFF	IMRC ON
Focus, 2.0L	0	5
F-150 5.4L, Mark LT	5	0
All Others	2.5	0

Fig 1: Intake Manifold Runner Control (IMRC) Actuator Connector - A

Courtesy of FORD MOTOR CO.

Fig 2: Intake Manifold Runner Control (IMRC) Actuator Connector - B

Courtesy of FORD MOTOR CO.

Fig 3: Intake Manifold Runner Control (IMRC) Actuator Connector - C

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Expedition 5.4L, F-150 5.4L, F-Super Duty 5.4L, Mark LT 5.4L, Navigator 5.4L	A	4 3 2 1	IMRCM IMRC PWRGND VPWR
Explorer 4.6L, Explorer Sport Trac 4.6L, Mountaineer 4.6L, Mustang 4.6L	A	3 2 1	IMRC PWRGND VPWR
F-150 4.2L	B	4 1 2 3	IMRCM IMRC PWRGND VPWR
Focus	C	2 1	IMRC VPWR
Fusion 2.3L, Milan 2.3L	C	1 2	IMRC VPWR

For most vehicles the IMRCM is integrated into the IMRC connector.

Fig 4: Intake Manifold Runner Control Monitor (IMRCM) Sensor Connector - A

Courtesy of FORD MOTOR CO.

Fig 5: Intake Manifold Runner Control Monitor (IMRCM) Sensor Connector - B

Courtesy of FORD MOTOR CO.

Fig 6: Intake Manifold Runner Control Monitor (IMRCM) Sensor Connector - C

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Expedition 5.4L, F-150 5.4L, F-Super Duty 5.4L, Mark LT 5.4L, Navigator 5.4L	A	2 1 4	PWRGND VPWR IMRCM
F-150 4.2L	B	2 3 4	PWRGND VPWR IMRCM
Focus	C	2 3 1	PWRGND VPWR IMRCM
Fusion 2.3L, Milan 2.3L	C	1	IMRCM

Fig 7: Intake Manifold Tuning Valve (IMTV) Actuator Connector - A

Courtesy of FORD MOTOR CO.

Fig 8: Intake Manifold Tuning Valve (IMTV) Actuator Connector - B

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Escape/Mariner 2.3L, Fusion 2.3L, Milan 2.3L	A	1 2	IMTV VPWR
F-Super Duty 6.8L	B	3 1	IMTV VPWR

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle	Connector	Pin	Circuit
Escape/Mariner	150 (50-50-50) Pin	E41 E6 B47	SIGRTN IMTV PWRGND
Expedition, Navigator	140 Pin	E58 B67 E43 E50	SIGRTN PWRGND IMRCM IMRC
F-150, Mark LT	190 Pin	E58 B67 E43 E50	SIGRTN PWRGND IMRCM IMRC
F-Super Duty 5.4L	170 Pin	E58 B47 E43 E50	SIGRTN PWRGND IMRCM IMRC
F-Super Duty 6.8L	170 Pin	E58 E64 B47	SIGRTN IMTV PWRGND
Focus	190 Pin	E64 B69 E25 E22	SIGRTN PWRGND IMRCM IMRC
Fusion, Milan	140 Pin	E58 E64 B67 E43 E50	SIGRTN IMTV PWRGND IMRCM IMRC
All other vehicles	170 Pin	E58 B47 E50	SIGRTN PWRGND IMRC