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Posts Tagged: Front Control Module

Power windows, radio, blower Grand Caravan

Power windows, radio, blower stop working Dodge Grand Caravan If you run into a problem where these electrical accessories work when the key is turned to the RUN position but the engine is off, but stop working when the engine is running, the problem may be either the ignition switch or the intelligent power module (IPM). Start by checking the voltages from the ignition switch when it is in various positions. With the key out, the ignition switch reports 4.6 volts to the BCM. The voltage goes down to 4.04 … Read More

How to fix electrical problems on Minivan

Electrical problems on Chrysler Minivan If you experience Electrical problems on Chrysler Minivan read this post. The body control module (BCM) controls the power door locks, automatic door locks, door lock inhibit (child locks), chime driver, compass, trip computer, interior lighting, power liftgate, exterior lighting headlight time delay, automatic headlights, illuminated entry, backup lights, interior light fade to off feature, and instrument panel lighting. So when you see several electrical units inoperative, the cause may be the BCM. However, once the BCM receives a switched signal from the driver’s operations, … Read More

Headlights speedometer turn signals don’t work

Fix headlights speedometer turn signals that don’t work on Chrysler trucks Remember the days when you could turn on your headlights with the flick of a switch? Back then the switch actually “switched” the power to the headlights. But in late model vehicles, the switch just gives a signal to a body control module (BCM), telling it that you want the headlights. Dodge has been using this system on its full sized “DR” trucks since 2002. If you’ve got a lighting problem and want to fix it yourself, you’ll have … Read More

Headlight Problems Chrysler minivan

Fix a headlight problem on a minivan If you have Headlight Problems Chrysler minivan, read this article. They’ve made the system so complicated that in some cases you need a scan tool to find out what’s wrong. Don’t own a $3,000 scan tool? Well, you can still do some of your own diagnostics. But first you have to understand the method behind Chrysler’s madness. It’s like Old Mcdonald’s Farm Chrysler wants every switch to go through a computer. Then one computer talks to another. The first computer is called the … Read More

Power windows don’t work Caravan

My power windows don’t work Caravan If the power windows don’t work along with the radio or blower motor or the problem is intermittent, this may be your fix. Caravan owners may experience a situation where the radio, power windows, blower motor stop working all at the same time. The problem may be continuous or intermittent. Shops are reporting that battery acid is corroding the wiring harness. The Front Control Module (FCM) then senses stray voltage (1-5 volts) and shuts down the accessory relay. Check for corrosion or a short … Read More


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