MEP-805B Auxiliary pump runs whenever master switch is on, and other issues

[Skydive]

When I turn on the master switch, the auxiliary fuel pump runs, even with the tank full of fuel..
The fault light remains on.
Reverse power shows on CIM.
Shows power on all 3 legs.
any ideas?

 

[Rikjames92]

Is your low fuel fault light on?

 

[Rikjames92]

When I turn on the master switch, the auxiliary fuel pump runs, even with the tank full of fuel..
The fault light remains on.
Reverse power shows on CIM.
Shows power on all 3 legs.
any ideas?

Never mind i skipped that line. On the side to the left (facing the control panel) there is a fuel switch that is probably stuck. Look for red and black wires, 4 of them i believe. Unplug it and the fault light will disappear and it should run just fine. Your aux pump will be disabled though. You can remove the coolant reservoir and then the fuel float switch from the tank and exercise it and it may come back to life. If its too far gone and you wish to use the aux pump with external fuel supply then replace it.