Question about 1996 Dodge Caravan
Hi, I just went through this today. 1) clean battery terminal connections. If there is any corrosion it can cause problems with the BMC. 2) go to the fuse box under the hood of the van, look for the IDO fuse, usually on the top of the fuse pannel. pull fuse and wate for about two minutes before putting back in. this will cause the BMC to reset. If gauges are still not working, and you find that the rear windshield wiper is not working, check for a blown fuse. If this is the case look in the back of the van at the light harness. you might be shorting out. tape bare spot on wire and replace the blown fuse. for some reasion this causes problems with the gauges. GOOD LUCK!
Posted on Oct 27, 2011
Check and Reseat every fuse you can find, on-by-one. It's amazing how often this does wonderful things. ;)
Make sure your battery is good, and has a good charge and good connections. The gauges are all computer controlled, and computers don't like iffy or dirty power.
But, the most likely culprit is the BCM (Body Control Module), although I've seen this caused by bad solder joints on the gauge cluster connector itself.
This can also be cause by a bad PCM or TCM power/transmision control module), but if the van starts and runs, it's very unlikely.
A quickie test for bad solder joints that works about 3/4 of the time is to simply whack the dashboard above the gauge cluster with the engine running. If the gauges jump, (not just wiggle a bit) it's likely you have bad solder joints.
Try holding down odo trip and reset buttons on the gauges. Turn the key on while holding them down. If nothing happens after 10 seconds, it's probably BCM, but still could be bad solder joints.
If you get 'codes', then there is hope to narrow it down:
110=Cluster mem fault
111=cluster calibration fault
905=no TCM comms
921=odometer fault from BCM
940=no PCM comms
999=end of tests/codes
chec-0 will dim the display
chec-1 will move all gauges through their entire range
chec-2 is odometer light test
When you see chec-3, keep your foot on the brake and move the gear shifter to each gear, give it a second in each position while you watch the display.
Also, if you have a compass/trip computer overhead, I've seen them cause problems. Disconnect that console and try again.
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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