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gribbled
04-11-2013, 09:00 PM
I'm checking the functionality of all the sensors to be verify my wiring. I don't yet have the wings mounted so I cannot easily hook up the real fuel level sensors (float type).

I went into calibration mode and I see that the AD_Value is stuck at zero. This is with the fuel wire open, or hooked to a 240 ohm or a 40 ohm resistor to ground (to simulate the float).

I turned off the power and measured the impedance looking into the fuel wire and saw about 5.5kohm to ground... so the wire is neither shorted to ground or open.

Any ideas? All other wiring and sensors are working fine (except I cannot test RPM or fuel flow without the engine).

Thanks for any ideas,

dave

Rob Hickman
04-12-2013, 05:57 AM
Did you order it for capacitance tanks? If it is configured for capacitance tanks you will need to add a 1k resistor between 5v and the tank input.