It was running good, had a brand new EC. All EC functions worked. I started cleaning up the wiring and ziptying things, cleaned some mud/dirt from around the harness where it enters the cab and now when I go to start it, #5 fuse blows. I assumed it was a short around that area but I can't find anything. It's a 1 amp fuse for the "EC Power Signal On" Hope I didn't fry this new computer.
So far I tried:
Unplugging PVC - no change
Unplugging EC motor - no change
Unplugging white wire at alternator - no change
Unplugging body module - no change
Unplugging main harness connector in the cab - still blows the fuse
Checked wiring from fuse panel to EC connector #39 and #26, no short to ground. No voltage. (Good)
Checked wiring from I think it comes from the key to the fuse box, 25 volts with key on.
EC Board itself has no smell or discoloration anywhere still looks new.
I get about 2.8 ohms from the fuse box (No fuse EC side) to a ground when it's plugged into the EC
Is there any way another circuit is interfering with the ground after the EC to allow too much current through when the EC is trying to power on? Anything else I can disconnect to see if it's stealing ground and drawing too much amperage through? The harness is a nightmare to get to under the cab, I'd like to pin point the spot if it's that. Thanks
So far I tried:
Unplugging PVC - no change
Unplugging EC motor - no change
Unplugging white wire at alternator - no change
Unplugging body module - no change
Unplugging main harness connector in the cab - still blows the fuse
Checked wiring from fuse panel to EC connector #39 and #26, no short to ground. No voltage. (Good)
Checked wiring from I think it comes from the key to the fuse box, 25 volts with key on.
EC Board itself has no smell or discoloration anywhere still looks new.
I get about 2.8 ohms from the fuse box (No fuse EC side) to a ground when it's plugged into the EC
Is there any way another circuit is interfering with the ground after the EC to allow too much current through when the EC is trying to power on? Anything else I can disconnect to see if it's stealing ground and drawing too much amperage through? The harness is a nightmare to get to under the cab, I'd like to pin point the spot if it's that. Thanks