-
This is a shot in the dark, but verify CBs 19,20, and 21 have not tripped.
I would then remove the plug from the ECU and put it back a few times to make sure corrosion at the connection is not an issue.
That is all the low hanging fruit I can offer.
Clint & Tammy Summers
2000 XL 45 Country Coach (rivets)
1977 FC31 Bluebird Wanderlodge (more rivets)
Vonore TN