Grand Caravan V6-3.8L VIN L (2007)
Power Distribution Module: Description and Operation
Front Control Module
Description
DESCRIPTION
The Front Control Module (FCM) is a micro controller based module located in the engine compartment. The FCM mates to the Power Distribution
Center (PDC) to form the Integrated Power Module (IPM). The IPM connects directly to the battery and provides the primary means of circuit protection
and power distribution for all vehicle electrical systems. The FCM controls power to some of these vehicle systems electrical and electromechanical
loads based on inputs received from hard wired switch inputs and data received on the Programmable Communications Interface (PCI) data bus.
Operation
FRONT CONTROL MODULE
The Front Control Module (FCM) is an electrical control and interface center located in the engine compartment. When it is mated to the Power
Distribution Center (PDC), it is referred to as the Integrated Power Module (IPM). The IPM, with its fuses and relays provides power and signal
distribution throughout most of the vehicle. The FCM receives both hard wire and digital electronic inputs from the vehicle electrical system through the
PDC. Based on these inputs and the ignition switch position, it provides direct power feeds and relay control to some of the vehicles' most critical
electrical systems.
The Front Control Module provides the following features:
Controlled power feeds:
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Front airbag system
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Headlamp power
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EATX module power (4 speed only)
-
Front washer motor
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Rear washer motor
-
Cabin Heater
-
Brake shift interlock system
Relay controls:
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Fog lamp relay (when equipped)
-
Park lamp relay
-
Front wiper on relay
-
Front wiper high/low relay
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Accessory relay
-
Horn relay
-
Front & rear blower relay
-
Adjustable pedals relay (non-memory)
-
Electronic back light (EBL) run only relay
Electrical inputs:
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Headlamp battery supplies 1 & 2
-
Module battery supply
-
Power ground
-
Ignition switch RUN or START position status
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Ignition switch START only status
-
PCI Bus
-
Stop lamp switch
-
Horn switch
-
Back-up switch
-
Wiper park switch
-
Washer fluid level switch
-
Brake fluid level switch
-
Ambient temperature sensor
-
Right park lamp outage
-
Left park lamp outage
-
Battery IOD
-
Battery (+) connection detection
CONTROLLED POWER FEEDS
