PCM Locations

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For PCM Removal and Installation procedures refer to the appropriate ELECTRONIC ENGINE CONTROLS .

Focus - passenger side behind kick panel.
Taurus/Sable, Freestar/Monterey - behind glove compartment (access from engine compartment dash panel) on passenger side.
Mustang - behind kick panel cover on passenger side, near instrument panel.
Crown Victoria/Grand Marquis, Marauder, Town Car - behind instrument panel (cowl), driver side near brake pedal.
LS6/LS8, Thunderbird, Explorer/Mountaineer, Aviator- passenger side, near side cowl, behind glove compartment.
Escape, Explorer Sport Trac, Ranger - behind instrument panel (cowl), center to both driver and passenger sides (Access from engine compartment).
Expedition/Navigator, F150 (Non-Heritage) - passenger side of engine compartment, mounted to the cowl.
F-Series Heritage - lower dash panel on passenger side.
Excursion, F -Series Super Duty - lower dash panel on driver side.
E-Series - lower dash panel (cowl) on driver side (Access from engine compartment).

Fig 1: Identifying PCM & 104-Pin Connector

Courtesy of FORD MOTOR CO.

104-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	71,97
PWRGND	Power ground	3,24,51,76,77,103
CSEGND	Case ground	25
SIGRTN	Signal return	91
VREF	5V reference	90
KAPWR	Keep alive power	55

Fig 2: Identifying PCM & 122-Pin Connector

Courtesy of FORD MOTOR CO.

122-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	B34
VPWR	Voltage input to module	B46
PWRGND	Power ground	B1
PWRGND	Power ground	B11
PWRGND	Power ground	B23
CSEGND	Case ground	B10
SIGRTN	Connector B signal return	B33
SIGRTN	Connector E signal return	E25
SIGRTN	Connector T signal return	T27
VREF	Connector B Buffered 5V reference	B45
VREF	Connector E Buffered 5V reference	E36
KAPWR	Keep alive power	B40

Fig 3: Identifying PCM & 150-Pin Connector

Courtesy of FORD MOTOR CO.

150-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	B32
VPWR	Voltage input to module	B33
PWRGND	Power ground	B24
PWRGND	Power ground	B25
PWRGND	Power ground	B26
PWRGND	Power ground	B27
CSEGND	Case ground	B43
SIGRTN	Connector B signal return	B17 (B5 for LS6/LS8/ Thunderbird)
SIGRTN	Connector T signal return	T17 (T14 for LS6/LS8/ Thunderbird)
SIGRTN	Connector E signal return	E17
VREF	Connector B Buffered 5V reference	B20 (B55 for LS6/LS8/ Thunderbird)
VREF	Connector E Buffered 5V reference	E20 (E14 for LS6/LS8/ Thunderbird)
KAPWR	Keep alive power	B44

Fig 4: Identifying PCM & 150-Pin Connector

Courtesy of FORD MOTOR CO.

150-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	B35
VPWR	Voltage input to module	B36
PWRGND	Power ground	B47
PWRGND	Power ground	B48
PWRGND	Power ground	B49
CSEGND	Case ground	B10
SIGRTN	Connector B signal return	B41
SIGRTN	Connector T signal return	T41
SIGRTN	Connector E signal return	E41
VREF	Connector B Buffered 5V reference	B40
VREF	Connector E Buffered 5V reference	E40
KAPWR	Keep alive power	B45

Fig 5: Identifying PCM & 190-Pin Connector

Courtesy of FORD MOTOR CO.

190-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	B51
VPWR	Voltage input to module	B52
VPWR	Voltage input to module	B53
PWRGND	Power ground	B67
PWRGND	Power ground	B68
PWRGND	Power ground	B69
PWRGND	Power ground	B70
CSEGND	Case ground	B66
SIGRTN	Connector B signal return	B58
SIGRTN	Connector T signal return	T43
SIGRTN	Connector E signal return	E58
VREF	Connector B Buffered 5V reference	B29
VREF	Connector E Buffered 5V reference	E57
KAPWR	Keep alive power	B54