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Lights on Start Up? Unusual
#1
Dear All

Had my Fazer a few weeks and have now done 935 miles on it.

When I turn the ignition on, the neutral, fuel, oil and fuel light come on then go off except neutral.

When I start the engine, the oil, temperature and fuel lights momentarily illuminate and then go off again (as if you've just turned the ignition on).

I'm sure it wasn't doing it before! Just watched a couple of You Tube videos of start ups and they don't do it, so I'm not imagining it.

Nornal?
A problem?
An inidcation of a problem?

The only thing that has changed, and may be ENTIRELY coincidental, is that I took it for MOT this morning and there were two extended periods of checking the steering lock to lock to check headrace condition. Makes me wonder whether a dirty/lose connection/wire has been upset. Just a pain in the @rse having to strip and inspect.

Thanks

BSR67
2003 Yamaha Fazer 1000 - Full Givi Luggage
2024 BMW R1250GSA
1998 Harley Davidson Fat Boy
1075 Yamaha AT2
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#2
(02-05-25, 02:15 PM)BSR67 Wrote: Dear All

Had my Fazer a few weeks and have now done 935 miles on it.

When I turn the ignition on, the neutral, fuel, oil and fuel light come on then go off except neutral.

When I start the engine, the oil, temperature and fuel lights momentarily illuminate and then go off again (as if you've just turned the ignition on).

I'm sure it wasn't doing it before! Just watched a couple of You Tube videos of start ups and they don't do it, so I'm not imagining it.

Nornal?
A problem?
An inidcation of a problem?

The only thing that has changed, and may be ENTIRELY coincidental, is that I took it for MOT this morning and there were two extended periods of checking the steering lock to lock to check headrace condition. Makes me wonder whether a dirty/lose connection/wire has been upset. Just a pain in the @rse having to strip and inspect.

Thanks

BSR67

...........................
Hi Bud.
Electrical woes are rife on these old Jap bikes.

Always ensure you've a proven good & fully charged battery with clean / grease free / tight connections before testing electrics.
Test the charging system too (specs in manual), if both check out, move on to checking for faults.

It's entirely possible this issue has been highlighted after an MOT, so could cleaning, MOT tester was only carrying out his checks to confirm throttle cables weren't being affected on lock to lock test, or wiring loom being put under stress affecting lights & steering & wheel bearings were good or not.
At least you're now aware of it.
I wouldn't be too concerned at this point, if bike's starting ok & running well, I'd just keep an eye on things in general, wait till something starts to act up is my advice, unless something obvious is amiss or you're a competent sparky, intermittent gremlins are hard to pin point.

Does lock to lock with ignition on & moving the loom around cause anything abnormal?

Not unknown for wiring to fracture around headstock area, ignition loom is a potential fail point, after all it's a 20 yrs plus copper wiring loom that's been flexed a million times.
Switchgear connectors all terminate above engine near left side ignition coil, you could check for poor/corroded or loose connections there.
Without seeing the bik, my money's on ignition being the likely culprit.

Main loom multi-plug behind left front flasher is a known problem too, especially if bike's been run in winter.

Lets us know how you get on ? 
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#3
Thanks Gaz66

All good advice. The bike is running fine and everything works. Discussed with a pal who is an electronic/avionics engineer (and Yamaha Nut) and he has suggested that main connector to the left of the flasher. The suggestion is low voltage or bad earth which is driving the system to do a 're-check' hence the lights re-illuminating.

Going to start at that connector (and thinking about it has similar issues with the earth here on a 2002 VFR800 and also 2004 5VY R1. So, will let you know what I find and work from there.

The bike has deffo been run in winter!

Thx

BSR67
2003 Yamaha Fazer 1000 - Full Givi Luggage
2024 BMW R1250GSA
1998 Harley Davidson Fat Boy
1075 Yamaha AT2
Reply
#4
So, I cleaned the two connectors on the left hand side behind the fairing, and cleaned the battery terminals. No chnange except - when left for a few hours it doesn't display the issue on start up. If you stop and re-start almost immediately, it does.

Will wait and see what gives.

BSR67
2003 Yamaha Fazer 1000 - Full Givi Luggage
2024 BMW R1250GSA
1998 Harley Davidson Fat Boy
1075 Yamaha AT2
Reply
#5
For the FZS600 this is a normal diagnostic test. Its also a clue if when you press the starter, these lights come on and stay on until you release the button but the engine doesn't turn over that you have turned the kill switch off. I suspect the FZS1000 is the same
Another ex-Fazer rider that is a foccer again
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#6
(04-05-25, 07:41 PM)BBROWN1664 Wrote: For the FZS600 this is a normal diagnostic test. Its also a clue if when you press the starter, these lights come on and stay on until you release the button but the engine doesn't turn over that you have turned the kill switch off. I suspect the FZS1000 is the same

Thanks for this. Being the sad act that I am (!!), I've watched a FZS600 start up video. On ignition on, the neutral light comes on only, then on physical start (with the starter button) the oil, fuel and temp lights flash on an off briefly (rather as mine is!!) leaving the neutral light on. 

The only difference is, my oil, fuel and temp lights illuminate on igntion on in addition to neutral, and then flash on again immediately after starting on the button.

Not that I'm obsessing or anything! So, I'll run for a few days and see what happens. You're right though - it's cycling a diagnostic run. The main this is, everything goes off.

Thanks

BSR67
2003 Yamaha Fazer 1000 - Full Givi Luggage
2024 BMW R1250GSA
1998 Harley Davidson Fat Boy
1075 Yamaha AT2
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