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Discussion Starter · #1 ·
i ve got an 01 ducati st2 that no one has been able to help me with. cant get any thing to light up on the dash, its like the bike is totally dead. took it to ducati dealer in dallas they checked it said the key switch was bad and the starter relay is bad ordered new ones from ducati , put them on same problem . bike has been sitting ina closed in carport for about a year and a half so it has not been out in the elements. the guy that i got it from said he rode it prior to parking it for a year. the only way you can get anything to work at all is to slide the starter relay off the plug just a little and taking a jumper wire jumping the big white wire to the little white wire and boom everything lights up fuel pump is pumping everything works with key switch off or on makes no difference, i have got so frustrated with it ive almost wanted to push it outside and strike a match to it. can any one pleases please give me a suggestion, love ducatis and really dont want to get rid of it thanks
 

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Is it possible that it's the Ignition Relay? I believe that's one of the ones up front to the left side of the headlight. I had an issue where my ST2 would not show any life (no gauge lights, no fuel pump, no head/tail lights nothing) when I turned the key on. Thought it could be ignition switch but traced it to that ignition relay (stock relay is yellow topped relay on the left side inside the upper fairing.

r-

Tom C.
 

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Discussion Starter · #4 ·
Is it possible that it's the Ignition Relay? I believe that's one of the ones up front to the left side of the headlight. I had an issue where my ST2 would not show any life (no gauge lights, no fuel pump, no head/tail lights nothing) when I turned the key on. Thought it could be ignition switch but traced it to that ignition relay (stock relay is yellow topped relay on the left side inside the upper fairing.

r-

Tom C.
yes thats what i was told by the ducati dealer , so i bring it home get a relay from the parts house , put it on same thing , i go back get a different relay from same store , same result nothing . i read somewhere that it has to be a ducati relay because the current inside it runs a different route than store bought relay, start calling around cant find one anywhere ,discontinued they say , finally find one at the other ducati store in dallas boom get it in the next day put it on, exactly what i had nothing , i am not an electrical guru dont know anything about it, i know what 40,000 volts will do to you , saw it hit a friend of mine ,can do mechanical work just not electrical . everybody is telling me scrap the bike , but i cant see doing that over some little something somewhere thats got me shut down. thanks so much for your reply i know some body one day i hope on here says here it is right here because they have had or seen some one with the same issue. you can slide the new relay off the harness enough to get a jumper wire on it , jump the 2 white wires and everything works everything light up bike cranks over , and it does that with the key off or on
 

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I am not entirely familiar with what you have going on. However, you state that if you jumper the power feed (waiting power) to the relay to the switched pole then everything works. That says, the majority of the bike works but there is an electrical fault.

Think of a relay as light switch. In miniature. The switch part that you activate with your fingers on an ordinary light switch is activated by an electromagnet in a relay.

There are a few things that relay needs to work. A ground for one. Make sure it has a good ground as that will prevent it from both switching on and off.

The other thing it needs is power to the switching pole in order to move the switch and have power go from the waiting power pole to the switched pole.

IIRC, there is zero difference between the "Ducati" relay and a standard Bosch relay. Should have 4 spade blades for connecting. One for ground, one for switching power and one for waiting power. The spade blade opposite the one waiting power is the one taking power to the rest of the system.

These are fairly easy to identify. A test light or multimeter will tell you which one is waiting power and which one is ground. If you jumper from the waiting power to either of the other two, one of them will cause the relay to switch and pass the power across the switch ( the relay will "click") while the other will just cause the dash to come to life..powering up the ECU and fuel pump relay.

Once you identify the wires, just follow the switching power wire on the schematic to find where that power is supposed to come from. Then you can figure out why there is no power to that wire and solve your problem....

Please don't be offended by this part, I have to ask...is the ignition cut off switch on the right handle bar on? What about the side stand switch? Only asking because I've seen both of these things cause someone to take a bike to the dealer for diagnostics....sean
 

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Discussion Starter · #6 ·
i read how to jump the kickstand switch by using a jumper wire, i did that nothing, the on and off switch on the handlebar has no power going to it ive checked that with a test light, and my relay has 5 wires going to it. thanks so much for trying to help me
 
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