I messed with these before and I can tell you this...... It takes 30 seconds for a resistance of low fuel(or no fuel) to build up before the signal is sent for the light to come on. So if you are trying to test , wait it out before you replace parts. You can download the owners
manual from Ducati.com and it should be on the last few pages.
Originally Posted by gerrv
Does anyone have a wiring schematic for a 2002 S4 in pdf or scanned format? I need to troubleshoot my low fuel light not coming on. I prefer not to purchase the sensor if it is not the problem.