I had an issue with my 2012 CE where once you turned on the wipers they would not shut off. you would have to stop the bus and with the wiper switch in the off position. You would then have to turn the key off then restart the bus to turn the wipers off.
It turned out we had to replace the body control module to fix the problem
this one will be fine for a while then all of a sudden the wipers would come on and atay on til u shut key off when u turn key back on in bout 5 seconds they would start again but then all of a sudden stop and be fine for a while I did notice if I un plug the washer pump the wipers would stay on once key was on but when washer pump is pluged in it doesn't work and there is no ground when the switch is pushed
The washer pump should have 12v all times,fused by fuse f34. The esc (body controller) supplies the ground signal wire A87G. It comes from the round bolt in connector at the firewall, pin#L. It goes from there to the connector by the gear box pin F then to the washer pump. Washer pumps are notorious for shorting out/ locking up.
ok I have 12v at washer pump no ground signal when I press button for washers I changed the pump already as of Friday the wipers where no staying on by them selves but I am sure they will act up again the bolt u are talkin about is it the one above the big plug going threw fire wall
We had same problem, after days of troubleshooting we finally figured out that there was a pinched wire in the steering tilt. We searched high and low, replaced switch replaced relays replaced wiper motor swapped ESC with no luck. Finally we noticed with the steering wheel in a certain tilt position the wipers would stop. Hope this helps.