Omega Owners Forum
Omega Help Area => Omega Electrical and Audio Help => Topic started by: snowy on 29 October 2009, 21:07:51
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can anyone help please.
The car stopped, wouldn't start, all electrics including starter and lights work except dash panel. AA replaced fuse 15, it went for 8 miles then blew again, then 100 yards, then 5 yards.
Can anyone tell me what fuse 15 supplies so that I can go through everything and check them one at a time.
Is a circuit diagram available anywhere.
thank you.
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here is a link to the owners manual. http://images.omegaowners.com/documents/UserGuides/OmegaOct2002.pdf
It shows fuses on page 186.
Fuse 15 =
CircuitRating 20 A
Reversing lamps,
level control system,
Vauxhall alarm system,
seat and mirror setting,
information display,
heated seats,
control indicators,
instruments,
instrument illumination,
windscreen wipers,
cooling fan,
headlamp range adjustment
good luck
Addy
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Doesn't say much for the AA, they should have located the circuit.
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Doesn't say much for the AA, they should have located the circuit.
Look at the fault description, it's an intermittent fault.
AA guy replaced the fuse.....the fuse held....ergo, the problem is solved.
Most of that list wouldn't have been in use if the OP was driving on a dry day, in "normal" (I use that term loosely) conditions, so it shouldn't take too long to find out what's tripping the fuse.
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I would not call it intermittent, it lasted for just 8 miles then blew again, then 100 yards, then 5 yards.
Or put another way, it may have blown as soon as the offending electrical item was switched on. ::)
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sounds like a lose wire, have you seen any blue sparks under your seats, wire could be traped some were and sorting out. :y
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Been there... Check out these 2 threads.
http://www.omegaowners.com/forum/YaBB.pl?num=1245933092/0
http://www.omegaowners.com/forum/YaBB.pl?num=1247420023/0
I've had the same problem, still not resolved. Since my problem with the fuse blowing in France its not happened again, the problem is so intermittent and random its proving a bit hard to pin down.
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This fuse does sometimes cause trouble and it powers quite a few circuits.
My first thought would be to try unplugging the power sounder. IIRC, the ignition switched feed to that goes via this fuse, and they do tend to go wrong when the batteries leak.
Secondly, switch off everything on that list and run it up until the cooling fans come on to check that aren't killing it intermittently. (that circuit doesn't actually run the fans, only the control side of the fan relay system but it could be a duff relay).
Thirdly, go through each item in turn and switch it on, check it's working, and wiggle the switch and any wiring that's accessible to see if that kills it.
You might find something like this useful for actually monitoring the current while you're testing: http://www.maplin.co.uk/Module.aspx?ModuleNo=217881
Kevin
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This fuse does sometimes cause trouble and it powers quite a few circuits.
My first thought would be to try unplugging the power sounder. IIRC, the ignition switched feed to that goes via this fuse, and they do tend to go wrong when the batteries leak.
Secondly, switch off everything on that list and run it up until the cooling fans come on to check that aren't killing it intermittently. (that circuit doesn't actually run the fans, only the control side of the fan relay system but it could be a duff relay).
Thirdly, go through each item in turn and switch it on, check it's working, and wiggle the switch and any wiring that's accessible to see if that kills it.
You might find something like this useful for actually monitoring the current while you're testing: http://www.maplin.co.uk/Module.aspx?ModuleNo=217881
Kevin
In my case it the fuse has never blown when the car is moving, (or when the engine has been started) only when stationary usually just after the ignition has been turned on.
The other thing is the engine will carry on running when the fuse is pulled.
It never coincides with anything being turned on. Except the ignition.
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This fuse does sometimes cause trouble and it powers quite a few circuits.
My first thought would be to try unplugging the power sounder. IIRC, the ignition switched feed to that goes via this fuse, and they do tend to go wrong when the batteries leak.
Secondly, switch off everything on that list and run it up until the cooling fans come on to check that aren't killing it intermittently. (that circuit doesn't actually run the fans, only the control side of the fan relay system but it could be a duff relay).
Thirdly, go through each item in turn and switch it on, check it's working, and wiggle the switch and any wiring that's accessible to see if that kills it.
You might find something like this useful for actually monitoring the current while you're testing: http://www.maplin.co.uk/Module.aspx?ModuleNo=217881
Kevin
In my case it the fuse has never blown when the car is moving, (or when the engine has been started) only when stationary usually just after the ignition has been turned on.
The other thing is the engine will carry on running when the fuse is pulled.
It never coincides with anything being turned on. Except the ignition.
Have you tried pulling the self-levelling suspension relay? I wonder if the compressor sometimes siezes? It normally fires up a fee seconds after ignition on.
Then again, not sure if the compressor is fed from this fuse. :-/ Worth a check though.
Kevin
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[movedhere] Omega General Help [move by] Kevin Wood.
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Have you tried pulling the self-levelling suspension relay? I wonder if the compressor sometimes siezes? It normally fires up a fee seconds after ignition on.
Then again, not sure if the compressor is fed from this fuse. :-/ Worth a check though.
Kevin
That was one of the first things I tried, mainly because even though I have an Elite with an air compressor the suspension has been changed to Bilstien shocks all round without the air shocks on the back. I used to notice the compressor kicking in shortly after the ignition was turned on. A bit pointless as there was nothing to pump up. So I pulled the relay.
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I would not call it intermittent, it lasted for just 8 miles then blew again, then 100 yards, then 5 yards.
8 miles, 8 yards...doesn't matter
If it isn't blowing the second it's replaced, then it's intermittent.
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Come on fella's this problem has been 'around for ever' and we have the best people to 'crack it,' I've driven to Barcellona (2000+ miles in high temps) NO failure! and I've blown FOUR 35amp fuses in a day doing 60miles, D'oh!
I've changed (what I believe to be) "the Sounder" [Rubic's Cube speaker device found in Engine Bay cavity above drivers feet but under plastic heater air intake grill adjacent to wiper mech's]. I've also disconnected the A/C condenser fan (inside the rad adjacent to the Engine not the two outer one's).
There must be loads of people out there suffering from this and living on a diet of YELLOW FUSES, Grrrrrrrrrrr..........
This is an open challenge to shine for someone with technical digits ?
Ding a Ling
:'( >:( :'(
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Come on fella's this problem has been 'around for ever' and we have the best people to 'crack it,' I've driven to Barcellona (2000+ miles in high temps) NO failure! and I've blown FOUR 35amp fuses in a day doing 60miles, D'oh!
I've changed (what I believe to be) "the Sounder" [Rubic's Cube speaker device found in Engine Bay cavity above drivers feet but under plastic heater air intake grill adjacent to wiper mech's]. I've also disconnected the A/C condenser fan (inside the rad adjacent to the Engine not the two outer one's).
There must be loads of people out there suffering from this and living on a diet of YELLOW FUSES, Grrrrrrrrrrr..........
This is an open challenge to shine for someone with technical digits ?
Ding a Ling
:'( >:( :'(
I think the only fellas that are going to crack this are the ones who have the problem, mine is so intermittent that trying to pin it down will be very hard to do, my fuse 15 last blew in June in France when i did 6 in one day but none since, I suppose swapping bits of kit around might help but how long do you test it before claiming you've solved it 1 week, 1 month, 1 year ?, mine hasn't blown for 5 months. And before that I can't remember.
To summarise: My fuse usually blows when the ignition is first turned on without starting the engine. I have said before that its never gone whilst driving but thinking back it has gone when I've slowed/stopped in a car park and in a queue at the Seven bridge, brake applied and only moving very slowly. Never blown when at speed. Usually just replace the fuse and away you go.
I like to think I should be able to solve this, my working background is in Electrical/Instrumentation breakdown in the paper making industry. Electrical faults, wiring diagrams are second nature to me, but an intermittent fault can be a nightmare to trace, especially ones that only happen once a year ! Much better for it to break properly.
At the moment my moneys on the alarm side.
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I would not call it intermittent, it lasted for just 8 miles then blew again, then 100 yards, then 5 yards.
8 miles, 8 yards...doesn't matter
If it isn't blowing the second it's replaced, then it's intermittent.
Not often I agree with KW :-X
But in this case, I do. If the fuse does not blow the insdtant you replace it, the fault is no longer there, and no matter how hard you look for it, it has gone.
If the fuse blows a short while afterwards, then in is intermittant, and only when it is in a "Blowing Constantly" state will you be able to measure and diagnose any circuits.
Sorry RustyM95, you probably are not going to see big blue sparks under the seat, the problem is probably more subtle than that.
Only advise I can give is to wiggle every wire on the circuit, operate everything and make a note of exactly what you are doing and what is being operated in a vain attempt to try to recreate the fault.
Once you can recreate the fault, either by the above, or with the ideas from others, then I`m sure that many here can then offer some helpfull assistance.
I must admit, that my initial thoughts would also be to unplug the power sounder first
:-/
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I have said before that its never gone whilst driving but thinking back it has gone when I've slowed/stopped in a car park and in a queue at the Seven bridge, brake applied and only moving very slowly. Never blown when at speed. Usually just replace the fuse and away you go.
Now that could be a clue!!! I have noticed that mine never blows when I'm in the car alone (coz I drive a little faster) only when I'm with the 'Trouble 'n Strife' and gotta drive 'sensibily' (no jokes about Power 2 Weight Ratio being outside of the approved envelope, please). Can't be the seat heating pads because we never use them. [He ponders] anybody chipping in ?
Ding a Ling :o :( :o
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Any cable in the footwells that are being stood on / moved by you or your passenger then?
May be worth applying some pressure at various foot length places and see what happens
:-/
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Fuse 15 blowing problem fixed.
First of all, thanks to all of you that responded to my request for info, it was all very helpfull.
Also, the AA guy was extremely helpfull.
I searched everywhere for a circuit diagram and eventually downloaded one from . It took a while to work out how it worked but ended up being an extremely powerful piece of kit. It is all in the instructions.
It turned out, after a lot of searching and a lot of luck to be something to do with under the drivers seat. Incidentally, it blew when going round a left hand corner or leaning to the right on the seat. I bought a 10A circuit trip from Maplin for under £2.00 and it was extremely helpful.
I've still got it disconnected so I don't know if it's the seat heater or seat adjust system.
Thanks again guys and hopefully this will help someone else in the future.
Regards,
Tony
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How did you disconnect the seat? I've had a look underneath today but can only find cables going into the floor - I can't see somewhere I can unplug.
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Fuse 15 blowing problem fixed.
I searched everywhere for a circuit diagram and eventually downloaded one from (BLANK???) It took a while to work out how it worked but ended up being an extremely powerful piece of kit.
It turned out, after a lot of searching and a lot of luck to be something to do with under the drivers seat. Incidentally, it blew when going round a left hand corner or leaning to the right on the seat.
Hey Snowy........where the 'blank' did you get the helpful Wiring Diagram? and please keep us informed about your final conclusions because I still have this fault on mine, Grrrrr!
Rgds, Ding a Ling :(
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my money would be on the seat heater. I had the same trouble , i didn't see what the sparky did but from what i can gather under the plastic cover next to the seat there are two plugs ,one for the heat the other for the seat movement Pull and clip the heat wire job done and i was £35 lighter. Worth it tho