Grand Caravan V6-3.3L VIN R (2005)
PARK LAMP RELAY
The Park Lamp Switch is a direct input to the BCM. The BCM sends a BUS message to the FCM informing it to turn on the park lamp relay. The park
lamp relay is then powered through low side control of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions.
FOG LAMP RELAY
The Fog Lamp switch is a direct input to the BCM. The BCM sends a BUS message to the FCM informing it to turn on the fog lamp relay. The fog lamp
relay is then powered through low side control of the FCM. This circuit is electronically controlled and continuously monitored for malfunctions. Fog
lamp functionality is not equipped on all vehicles. The FCM learns that the vehicle is equipped with fog lamps by reading the BCM BUS message.
FOG LAMPS
The BCM controls the operation of the fog lamp relay that turns the fog lamps ON and OFF. The Fog lamps can only be ON when the park and low
beams are ON. If the high beams are switched ON then the Fog lamps will be automatically turned OFF.
EXTERIOR LIGHTING BATTERY SAVER
The BCM monitors the status of, and controls, the Park Lamps, Headlamps and Fog Lamp relays. If any exterior lamps are left ON after the ignition is
turned OFF, the BCM will turn them OFF after 3 minutes.
AUTO HEADLAMPS
This feature is available on vehicles equipped with both the Electrocromatic Mirror (ECM) and the Compass/Mini-Trip Computer (CMTC). When the
BCM detects a day/night signal from the CMTC, an ECM is present and Auto Headlamp mode is selected.
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)
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Front washer motor
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Rear washer motor
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Cabin Heater
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Brake shift interlock system Relay controls:
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Fog lamp relay (when equipped)
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Park lamp relay
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Front wiper on relay
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Front wiper high/low relay
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Accessory relay
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Horn relay
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Front & rear blower relay
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Name brand speakers (NBS) relay
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Adjustable pedals relay (non-memory)
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Electronic back light (EBL) run only relay
Electrical inputs:
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Headlamp battery supplies 1 & 2
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Module battery supply
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Power ground
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Ignition switch RUN or START position status
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Ignition switch START only status
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PCI Bus
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Stop lamp switch
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Horn switch
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Back-up switch
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Wiper park switch