EX200-3 — Excavators

I was dealing with some lag when curling the bucket, so I checked the pilot manifold pressure sensors behind the cab. I plugged them in and out, and suddenly the engine went into full load. Eventually the PVC fuse blew. I think the A sensor might be the issue—it doesn't seem to be allowing current through. I also found debris in one of the pump solenoids, which could've been the original problem. Now I can't get the machine to unload. On the PVC harness, pin 246 isn't showing any power. Shouldn't that have 24 volts? I've already checked the fuses and they're all good.

What fuse number blew on the PVC? Also, are you sure you mean pin 246 on the PVC harness? Pin 46 is the one that gets power from Fuse 7. About those sensors—the A sensor and DP sensor can only really be tested for a short circuit. Check the screenshot I attached.

Fuse #7 is the one that went. On pin 246, I'm going off some info someone shared here a while back. I'll try to get that attached.

I know that wasn't my finest moment! I think I posted something else too.

PVC pins 37 and 46 should both be getting 24 volts from Fuse #7.