Gauges are dead
We have a 2002 Coachmen Cross Country Elite with 54000 miles. Never had any electrical trouble with the coach on 5000 mile trip this summer. I start it every couple of weeks just to keep the "juices flowing" in the unit. Two weeks ago it started fine and all systems were go on the pre-start. It has a Freightliner chassis and a Cummins engine with an Allison transmission. A couple of days ago when I went to start it. I turned the ignition key to the on position everything in the dash, (back up camera, heater controls, radio, headlights, transmission gear selector indicator, gauge lights, etc...), worked. The only thing not working was the message center with all 24 of the "idiot lights", and the gauges. I mean the fuel gauge, air pressure gauges, voltage gauge, everything. Also none of the alarm buzzers worked.
I waited a couple of minutes and turned the key to start. It fired right up. The coach rose as the air suspension inflated and everything else throughout the coach worked. I spent a couple of hours tracing and re doing ground connections to no avail. The fuel gauge is run by a sending unit in the fuel tank, the tachometer is run by the engine. Neither of which work.
I notified Freightliner for some help and they sent me the schematic for the coach and a trouble shooting guide for the Type XC chassis with Type III wiring. It may be the VDC (vehicle data computer). I know at this point I will have to take it to the Freightliner dealer where we live but I am just wondering if anyone else has experienced this problem and what their solution was?