PINPOINT TEST HU: Intake Air Systems: Introduction

WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. 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 also includes charge motion control valve (CMCV) (9G730)
intake manifold tuning valve (IMTV) also includes the long short runner control (LSRC) (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)

Intake Air System

IMRCM VOLTAGE VALUES

VEHICLE	IMRC OFF	IMRC ON
BASE	2.5	0
Focus, 2.0L	0	5
Focus, 2.3L	0	5
F-150 5.4L, Mark LT	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

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, Freestar/Monterey	B	4 1 2 3	IMRCM IMRC PWRGND VPWR
Focus 2.3L, Focus 2.0L, 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

Vehicle	Connector	Pin	Circuit
Focus 2.3L, Focus 2.0L	A	2 3 1	PWRGND VPWR IMRCM
Expedition 5.4L, F-150 5.4L, F-Super Duty 5.4L, Mark LT 5.4L, Navigator 5.4L	B	2 1 4	PWRGND VPWR IMRCM
F-150 4.2L, Freestar/Monterey	C	2 3 4	PWRGND VPWR IMRCM
Fusion 2.3L, Milan 2.3L	A	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.

Fig 9: Intake Manifold Tuning Valve (IMTV) Actuator Connector - C

Vehicle	Connector	Pin	Circuit
Focus 2.3L, Escape 2.3L, Fusion 2.3L, Mariner 2.3L, Milan 2.3L	A	1 2	IMTV VPWR
F-Super Duty 6.8L	B	2 3 1	PWRGND IMTV VPWR
Taurus 3.0L	C	2 1	IMTV VPWR

Powertrain Control Module (PCM) Connector

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 E43 B67 E50	SIGRTN IMRCM PWRGND IMRC
F-150, Mark LT	190 Pin	E58 E43 B67 E50	SIGRTN IMRCM PWRGND IMRC
F-Super Duty 5.4L	170 Pin	E58 E43 B47 E50	SIGRTN IMRCM PWRGND IMRC
F-Super Duty 6.8L	170 Pin	E58 E64 B47	SIGRTN IMTV PWRGND
Focus 2.3L	150 (50-50-50) Pin	E41 E26 E42 B47 E43	SIGRTN IMTV IMRCM PWRGND IMRC
Focus 2.0L	150 (50-50-50) Pin	E41 E42 B47 E43	SIGRTN IMRCM PWRGND IMRC
Freestar/Monterey	104 Pin	91 8 103 42	SIGRTN IMRCM PWRGND IMRC
Fusion, Milan	140 Pin	E58 E64 E43 B67 E50	SIGRTN IMTV IMRCM PWRGND IMRC
Taurus	104 Pin	91 29 103	SIGRTN IMTV PWRGND
All other vehicles	170 Pin	E58 B47 E50	SIGRTN PWRGND IMRC