Ducati Monster Forum

I've posted this on other forums but I know you guys are pretty handy at this......

So I'm at the electrics stage of my build. I have totally re wired my whole 2007 695 to accommodate after market clocks, lights and controls. I've had my immobiliser disconnect along with my lambda sensor and have bypassed the stand switch. Anyway I've wired it all back up except the lights, I turn the key (hot wired it, because of no barrel atm) the fuel pump kicks in and the relays flick into life, I hit the run button but nothing! I'm going out of my mind trying to figure out what it is and I'm very aware that it could be a number of things.

Can someone please clarify for me that if I have had my immobiliser removed from the brain that the bike should start with the clocks disconnected? I have since sold the clocks to help fund the build so can't plug them back in to check!

Any ideas would help immensely

Yes, if the immobiliser has been disabled the bike should start without gauges.

Does it crank?

No it doesn't crank?

Would the fuel pump kick in and the relays tick on a key turn if the immobiliser was active?

Do you have a working neutral light (signal)?

I'm not sure about the pump and relays.

The starter button sends a signal to the ecu and the ecu sends a signal to the solenoid. It's the small white plug. You should have 12v across the two wires in that plug for whatever the duration of cranking should be after the button is pressed.

Lars makes a good point. That bike won't start if there's no neutral light signal to the ecu.

No I haven't plugged in the neutral light into the back of the engine, but saying that I have tried it with the clutch lever depressed so it shouldn't matter if the bike is receiving a neutral signal on not.........right?

I have hot wired the solenoid just to double check everything works from there down, it does but obviously still no spark or at a guess signal from the brain to injectors etc?

Without seeing a diagram I can't tell...I'd guess so.

A bike that's been apart won't necessarily fire right off on the first starter cycle.

Seems you're guessing there's no spark or signal to the injectors.

I'd work on one issue at a time. Get it to crank off the starter button. Then you should be able to test the rest.

^^
Well, that's assuming the clutch lever micro switch is working and wired correctly.

Then there's the side stand switch bypass....

Exactly! Is could be a whole string of events!

The problem is not being able to get it to crank from the button leaving me to think the immobiliser hasn't been removed properly

I will go back and check the neutral switch light make sure the side stands with is correctly bypassed

When I hot wired the solenoid I had a plug out and earthed to the frame to test for a spark......nothing on turnover

...and just to be sure...

the kill switch is connected and in the run position. ;)

Please let the answer be 'no'  ;D

Embarrassing....... [bang]

How does it run?

No I mean that would be embarrassing!

You wouldn't be the first if that happened to be the case.

I remember when I wired in the PCIII to my S2R800, I had a similar situation, would prime, but no crank. Turned out I had connected a ground improperly I should have been grounded to the ECU, but I had grounded it to the neg battery terminal. Might wanna check that.

Grounded to the ECU? I thought that ground was common throughout the whole bike?  So does that make it a kind of switched ground?

Ok so here's what happened today at the workshop.....

With the knowledge and inspiration from you guys yesterday I went back with a fresh mind and a new set of eyes, I checked and re check every possible connection. I even put the kick stand switch back on and disconnected the bypass, neutral light was connected in the back of the engine all along, I pulled it out and reconnected it anyway. I studied the whole loom and made sure everything was going to the right place and correctly grounded and so on.

I hot wired the barrel and the pump primed and the relay flicked to life as before, the run switch was set to on so I went ahead and press the start button........ Nothing! Bloody nothing!!! But this time I heard a small click from the relay that I've never heard before so just to check that it was a result of me pressing the switch and not the relay timing out I did the whole process again and it flicked again. I thought I had wired something wrong and crossed polarity somewhere and shat myself thinking I was burning stuff out! But for some reason I tried taking a plug out and earthed it to the frame again as before and hot wired the solenoid. It cranked and there was a spark!!!!

Shoved it back into the engine and hot wired the solenoid again the thing cranked and started to cough and back fire so I swapped the ignition modules around cranked her again and she revved into life!!! After two years of silence I get to hear that sweat noise again! But as soon as that happened it started to dump all of the oil out from around the base of the top cylinder well at least that is where I think it came from, so I had to shut it off to the sound of my ears ringing and adrenaline pumping though me.

What a day, I'm so happy that issue is resolved thank you so much guys I was very ready to give up on it!

So it turns out that for some strange reason the starter button won't tell the ECU to go ahead with activating the solenoid?

I've seen that circuit of the ECU fail on two bikes, from water getting into the instrument cluster.
Both times it also fried the wiring going down to the sidestand switch.

You can wire directly from the starter button to the solenoid, but you will lose the safety 'interlock' that the ECU provides via the sidestand/clutch/neutral sensing.

I bet he doesn't care....

There was a ground wire that was attached to the ECU. When I disconnected the battery to work on the bike, I took that all off, but had forgotten that it was grounded there and not to the negative terminal. Had nothing to do with the PCIII.

Oh yes, I know the one!

Thanks speeddog! I'm trying to cut down the size of harness so this is a good tip, I'll give it a go! Side stand hitting here I come!