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Powertrain Control Module

The center of the Electronic EC system is a microprocessor called the powertrain control module (PCM). The PCM has a 104-pin electrical connector (Figure 21) . The PCM receives input from sensors and other electronic components (switches, relays). Based on information received and programmed into its memory, the PCM generates output signals to control various relays, solenoids and actuators.

PCM Locations

Escort, Tracer - passenger side under instrument panel.

Contour/Mystique, Taurus/Sable, Windstar, 5.4L F-Series - 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 - behind kick panel cover on driver side, near instrument panel.

Continental, Town Car - behind instrument panel (cowl), center to both driver and passenger sides.

Mark VIII - left cowl (near steering column) on driver side.

Ranger - behind instrument panel (cowl), center to both driver and passenger sides.

Explorer/Mountaineer - behind instrument panel (cowl), (access from engine compartment dash panel) on passenger side to center of vehicle.

Expedition/Navigator - lower dash panel on passenger side.

All other F-Series and all E-Series - lower dash panel on driver side.

Figure 21: Typical Powertrain Control Module (PCM)

Remove the console and the PCM is mounted right in front of the gear shifter, with the connector readily exposed and easy to access after the console is out of the way.

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Q: Where is the pcm at on 1998 Ford Escort ZX2?
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