You have my sympathy, I have currently got the same problem.
Me too
. Any ideas, anybody.Really appreciate the update, very helpful. I definitely agree about the scuttle drain hole; poor design. My van is always parked slightly up hill, but we recently drove through loads of water, due to the torrential rain so water damage was my first concern. Hopefully yours will come back fixed and mine will be following shortly. Luckily for me, I think somebody had already been into my fuse box, as there is no cage and it is secured with two old bolts. Please let us know how it goes
Been eagerly waiting for this update Nigel and that sounds like a brilliant find. I’ve been unsuccessfully checking looms for split wires all day, but tomorrow I’ll check my fuse box thoroughly too. Fingers crossed. Like you say, that stupid scuttle could be the cause of all these problems. Thanks again for sharing
. Time to start tracing wires I think. 
Don't know if it would be any good on later systems, but many years ago on an Iveco Daily 2004? roughly, I had quotes of over £1k from Dealers for same problem , but caused by lost chip for key (long story) ECU was a Bosch MS6.9 I think, I posted the ECU to a car computer guy in Bradford (no longer there) who disabled the immobiliser, it came back with certain instructions on what not to reconnect and vehicle ran perfectly total cost back then £137 including postage from memory.Under bonnet fuse board removed. Surprisingly, no corrosion or moisture found. Fuses and contacts all cleaned. Replaced and connected and still got the immobiliser light
Thanks, good point. I did wonder about the key, but don't have a spare to check (only a standard key). I may have to send the key off to the place NigelNovice mentioned http://www.autotronics.co.uk and get them to check it.Don't know if it would be any good on later systems, but many years ago on an Iveco Daily 2004? roughly, I had quotes of over £1k from Dealers for same problem , but caused by lost chip for key (long story) ECU was a Bosch MS6.9 I think, I posted the ECU to a car computer guy in Bradford (no longer there) who disabled the immobiliser, it came back with certain instructions on what not to reconnect and vehicle ran perfectly total cost back then £137 including postage from memory.
Obviously need to notify insurers of lack of immobiliser in case of any future claim.
My problem was I bought a 3.5 tonne crewcab pick up from auction ex water board drove home OK , as it was in sh*t order I steam cleaned inside the cab and everywhere else and it wouldn't start, immobiliser light on.Thanks, good point. I did wonder about the key, but don't have a spare to check (only a standard key). I may have to send the key off to the place NigelNovice mentioned http://www.autotronics.co.uk and get them to check it.
My problem was I bought a 3.5 tonne crewcab pick up from auction ex water board drove home OK , as it was in sh*t order I steam cleaned inside the cab and everywhere else and it wouldn't start, immobiliser light on.
Long story short it turns out the water board workshop got fed up with replacing broken expensive keys so put the chip behind the speaker taped to the aerial sensor and I had blown it away.
. The website looks really useful too. Thanks for posting. Definitely bookmarking them. 
I've even set the clock to the right time Sounds like your electrician man was a good bloke to know.Update,
It lives at last, now Friday, what a saga, so the fuse box arrived and was duly fitted Wednesday, still not starting though so my man started to check things out again after thinking we had it nailed with the wet fuse box, OBD scanner still not able to communicate properly, he started peeling back the tape holding the loom together after checking out the wiring diagram, researching further he discovered fuse 22 under the bonnet was the one needed to rid us of the lock symbol but it had no feed unlike with the old fuse box full of water giving a 3.8 volt reading even without a fuse in, this he found was supposed to be energised by the relay next to it, the relay was not kicking in and so he checked its feed and it had power but had no earth or grounding for it to operate, he rigged a temp earth and and she started and OBD scanner connected, I was so happy I nearly peed, by now it was getting late and bloody freezing (coldest spell the UK's had this year), this was the second night on the trot, till 9 first night and 8 last, as he now knew what up he came back tonight and traced this ground wire and found a break, now when I said wire! I have seen thicker pubic hairs! anyway it was soldered together heat shrinked, she started again so he then set to rewrapping the loom where needed and I started putting all the dash trim etc back on, one happy bunny tonight
Hope this helps others, why did it break who knows
Many thanks for posting the result. I am pleased that your problem is resolved. Broken wires are not unknown on older Ducatos, as they have been mentioned in previous threads. For information, F22 is described as the main injection fuse, and the relay T09 which controls the supply to the fuse, is named as the "Main Injection Relay". No wonder that you had problems.Update,
It lives at last, now Friday, what a saga, so the fuse box arrived and was duly fitted Wednesday, still not starting though so my man started to check things out again after thinking we had it nailed with the wet fuse box, OBD scanner still not able to communicate properly, he started peeling back the tape holding the loom together after checking out the wiring diagram, researching further he discovered fuse 22 under the bonnet was the one needed to rid us of the lock symbol but it had no feed unlike with the old fuse box full of water giving a 3.8 volt reading even without a fuse in, this he found was supposed to be energised by the relay next to it, the relay was not kicking in and so he checked its feed and it had power but had no earth or grounding for it to operate, he rigged a temp earth and and she started and OBD scanner connected, I was so happy I nearly peed, by now it was getting late and bloody freezing (coldest spell the UK's had this year), this was the second night on the trot, till 9 first night and 8 last, as he now knew what up he came back tonight and traced this ground wire and found a break, now when I said wire! I have seen thicker pubic hairs! anyway it was soldered together heat shrinked, she started again so he then set to rewrapping the loom where needed and I started putting all the dash trim etc back on, one happy bunny tonight
Hope this helps others, why did it break who knows
Such good news at last (and a bloody good laugh tooUpdate,
It lives at last, now Friday, what a saga, so the fuse box arrived and was duly fitted Wednesday, still not starting though so my man started to check things out again after thinking we had it nailed with the wet fuse box, OBD scanner still not able to communicate properly, he started peeling back the tape holding the loom together after checking out the wiring diagram, researching further he discovered fuse 22 under the bonnet was the one needed to rid us of the lock symbol but it had no feed unlike with the old fuse box full of water giving a 3.8 volt reading even without a fuse in, this he found was supposed to be energised by the relay next to it, the relay was not kicking in and so he checked its feed and it had power but had no earth or grounding for it to operate, he rigged a temp earth and and she started and OBD scanner connected, I was so happy I nearly peed, by now it was getting late and bloody freezing (coldest spell the UK's had this year), this was the second night on the trot, till 9 first night and 8 last, as he now knew what up he came back tonight and traced this ground wire and found a break, now when I said wire! I have seen thicker pubic hairs! anyway it was soldered together heat shrinked, she started again so he then set to rewrapping the loom where needed and I started putting all the dash trim etc back on, one happy bunny tonight
Hope this helps others, why did it break who knows
glad you’re still able to laugh after all this!). Really has been helpful to me. I’ve now spent hours looking at pubic looms hoping to see a broken wire. Son-in-law is a bit of a leccy and reckons he can test the wires. I’ll show him your last post to start his testing. Bit of a coincidence if it’s the same wire though. Fingers crossed. Will update if it ever gets fixed.
