WC IL | Not sure about the 7710, but have an 8730 andhere's what it says in the owner's manual if dash says open:
If a malfunction occurs in the coolant temperature, engine oil pressure,fuel level, engine speed or ground speed circuits, OPEN will display to indicate an open circuit and the corresponding bargraph (or MPH/KPH for ground speed circuit malfunction) will flash when the key-start switch is on and the engine is not running.
If the fault is in the fuel level circuit,the whole bargraph will flash if the engine is running. With the engine stopped and the key-start switch on, the four left hand segments of the bargraph will flash if the fault is in the No. 1 fuel tank circuit. If the fault is in the No. 2 circuit, then the four right hand bars will flash.
It also says if the malfunction is a short, them SHCR will display in the panel.
This says to me you probably have a plug loose, broken wire, or bad sensor on one the cicuits, if the 7710 is the same dash is used in both.By the way, my 8730 is also a 1991.
The tach and speed sensor quit working on mine a couple of years ago, replaced the engine speed sensor on the back of the alternator, and the transmission input speed sensor on the flywheel, and that fixed it. Mine is a power shift and both sensors showed up as a fault code on the tranmission, not in the digital dash.
Hope this helps. |
7710 digital dash says open-anybody know what is wrong
