Does anyone have the schematic for the park break pressure switch circuit on a Deere 8400? We are getting CCU 27 code, which is for pressure switch open circuit. The tractor goes into and out of gear just fine, but the “read manual” light is flashing. I suspect a problem with wiring because we have been mowing cotton stalks, which is rough on the underbelly wiring.
Deere 8400 Park Break PSI switch Schematic
