Friend of mine bought a 1.2 16V (despite all my warnings).
When we were testdriving the car it threw the warning triangle and the "fuel cutout switch on" warning at us. Since I brought my laptop with Fiat ECUscan and my ELM-cable I tried resetting it, but the carbattery went dead. I think I've read somewhere (on this forum?) that this warning should disappear with a fresh battery, so after getting a new timingbelt, battery and MOT he picked it up yesterday.
Needless to say the warning hadn't disappeared. Plugged my laptop in today, but still unable to find and erase any stored faults with the freeversion of ECUscan.
Is this a problem in the instrumentcluster or bodycomputer?
Could this be adressed with the fullversion of ECUscan?
Or is it examiner only?
Pressing the concealed switch does not seem to do anything and apart from the annoying beeps and warning car drives Ok.

gr J

Stilo engine faults do not need to be erased. Once the fault is fixed, the warning should stop after 3 clear starts.

Both the free and registered versions of FES will erase fault codes, but if the fault has not been fixed, the warning and code will reappear.

Thanks. I know messages should disappear after three clean starts. however this car drives Ok, but beeps. Pressing the cutoutswitch resetbutton doesn't do the trick. I use ECUscan on mine and my daughters car and all things Engine-ECU related work great.
How does one solve this problem so the warning disappears?

gr J

Obviously your engine shouldn't be running if the fuel cut off is triggered as it stops the fuel pump (or supposed to) so the fact you're getting "fuel cut off" warning then it's getting a signal as if it has been triggered


If you can, try disconnecting the inertia switch connector I50. This will stop the fuel pump running for sure but does it stop the warning? If it does then terminal 2 at I50 is being taken to earth and you may have a bad inertia switch. If you have a wiring short to earth along the way from the dash gauges to the inertia switch then the warning light may still stay on




You can always temporarily jumper terminals 1 and 3 to get fuel pump running just to prove its a bad switch

As your friend has only just bought the car and they're always an unknown, look for any bodged wiring down there

I'll try that decks. The connector is on the swich itself, behind the plastic panel?

gr J

Yes that's the one.

I may have a similar problem. Long story but basically it's not the fuel cutoff switch itself, that tests fine. I have tested pin 2 on the connector under the switch and it tests 0 ohms down to ground. Does anyone know if that is correct and if not do they know where it goes to so I can disconnect it a the other end and see if the short clears.

If the switch I 50 pin 2 goes to ground then that's where your problem is. Pin 3 should go to ground to earth the fuel pump etc
Pin 2 going to ground will trigger the dashboard fuel cutoff warning

If you remove the connector and put a jumper from pin 3 to pin 1 then things should appear normal