Chrysler Repair: Voyager 2.r l draining battery, transmission control module, cluster memory


Question
hi my battery on my voyager goes flat after one day i ve changed the battery for a new one & checked the alternator which is charging ok everythink works electricly
Founde it fuse under the bonet number of the fuse is 10D dont know wich circuit is for so what to do next. can you help me please?Got now idea what I should do?


Answer
Hi Mac,
That fuse is the one that provides current to all the devices that need to get power when the ignition switch is "off". These are the possible drains, one of which is taking more than normal or is "on" all the time when it shouldn't be:

remote keyless entry module
message center (memory function)
instrument cluster (memory function)
radio (preset pushbutton memory)
data link connector plug (current to operate a code reader)
transmission control module (memory)
body control module (all the interior lights, the underbonnet light, glove box light)

Probably there is a hidden light that is staying on (underbonnet, glove box) when it shouldn't be. So look carefully for that.  Otherwise it means putting an amp meter across the IOD fuse socket with the fuse removed, noting the current, and then remove each of the above components plugs to see which one, when unplugged, causes the current reading to drop significantly. I would start by going under the dash to the fuse box there, and reach around to the back side where the body computer is located. Pull out the natural colored multipin plug (there are two plugs on the back side) which will disconnect the body computer) and see if that drops the current significantly. That would be an indication that the problem is somewhere in the circuits controlled by that unit.  The normal "off draw" current should be 5 to 25 milliamperes. While you are trying to solve the problem you can eliminate the draw on the battery by removing the fuse when you aren't using the van.
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Roland