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1. Access the underdash fuse box and check fuse 22 for power.2. If this fuse does not have power, continue to 3.3. Check fuse 10 in the same box. If this fuse has power, but fuse 22 does not, suspect a damaged fuse box (not the most likely cause).4. If fuse 10 is also dead on power, access the underhood fuse box and check fuse 22. Replace the fuse as needed.5. If fuse 22 in the underhood fuse box is good, but there is not power to fuse 22 or 10 in the under dash fuse box, there is an open circuit between the two fuse boxes. Check for a problem at connector 237 before further harness inspection.
The cluster and the fuses are the most common cause of the symptoms you describe. Let me see if I can look over a wiring diagram and see if anything else to check jumps out.
I'm sorry for some reason the question dropped off of my list.
No, I haven't been able to find anything. We only have a couple of these vans in my fleet and we haven't seen any of them for this problem so aside from those fuses, none of my technicians had any ideas either.
Do you have a scan tool to check for data? If the cluster fried (one place where all of these circuits pass through) then you should see a B2477 trouble code stored in the computer.
I'm almost certain the problem is in the instrument cluster.
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Let me know if you need additional information.