Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Help! electrical problems

[DEMON]

looking at the cct daig, this fuse protects the ecu and power relays, could be a faulty relay (one of the two right under your seat)
send me a pm with your contact tel no and ill ring you in the next 1/2 hour.

[DEMON]

We need to know which model bike you have, with which ecu..then we can be more specific...however check the following as a matter of course :-

1.All connectors, all earths for loose wires / poor connections.
2. All connections to sensors / fuel pump
3. check connector block to ecu
4. check power relay connectors

report back

[rob holmes]

thanks for the replys Demon, its a 99 748 Biposto, i have swapped around the relays with no effect. I have had a thought though, you mentioned about overheating, yesterday my mate noticed that the temperature gauge was between 180 and 200 but the fan did not come on. Could it be the fan is not working and when the bike reahes a certain temperature it blows the fuse? i'm getting the father in law round today he's a spark and i'll get him to have a look. Will keep you informed mate.

[DEMON]

ok, then check the fan thermostat for good function, you say that the fan does not cut in, so a simple test would be to allow the bike to run whilst on the stand and observe what happens, when it reaches the cut in temp.

[rob holmes]

just tested the fan, the temperature reached 180+ and did not kick in. I then connected a wire from the battery to the fan and the fan works fine. Very puzzled at the minute. I did discover a leak on my expansion tank though, don,t know if that is also affecting things??

[DEMON]

So you could have a faulty fan thermostat.
the split tank is becoming a common problem on this forum, and there is a sensor connected to it too..check it over

[rob holmes]

will look at it now, and let you know,