Bikes, Hints'n'Tips > Fazer 1000/FZ1 corner

Speedo sensor relacement

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seangee:
Any tips on how to get to this on a gen1 with the least amount of dis-assembly? Mr Haynes is singularly unhelpful - follow the wire, undo the bolt, slide it out. My dainty little paws won't even get close!!!

As an aside I got no error code when I disconnected it - is that normal? I'm pretty sure that it is my problem as the volt meter did not move from zero while turning the wheel with the ignition on.

chitsu:
As regards removal/replacement of the speed sensor, I changed one when I had the swingarm off to re-grease all the bearings, probably not much help to you but it was a doddle to replace with the swingarm out of the way.
But firstly have you checked all the wiring thoroughly ? You should be getting 5V all the time from the clocks to the speedo sensor (Neither the O.E manual or the Haynes tell you this, I found out through trial & error!) I cant remember exactly which wire it is (will check when im back in the workshop) but I seem to recall it being a black/white wire ? (MAYBE!) if you havent got that 5V feed there follow it back to the clocks. Ive seen about 10 Fazer's/R1's & R6's with speedo faults and everyone of them has had an issue with the 2 multiplugs under the infil trim on the left hand side (by the side of the clocks) either completely corroded contacts or just water ingress.
The worst one I came across needed a new FULL wiring harness as it had too much water damage inside the loom to warrant it's repair (was cheaper to fit a 2nd hand loom).
And lastly you want get an error code for the speed sensor, I think there are only 3 or 4 (R1 & R6 have an error code for the fuel level indicator if I remember correctly) error codes on these which are for the T.P.S, Exup valve & the tilt switch (Yet again I will confirm this tonight when ive checked at the workshop).
 
I will post up which wires to check tonight after ive had a quick look at the C.F.D, chitsu.

seangee:
Ta

I did originally suspect water when it became erratic after a storm. Everything appeared clean and dry and worked fine when I put it back together. A few weeks later it died altogether so I followed the Haynes troubleshooting procedure - starting from the sensor and working back. Thought I had struck gold fairly early (although in the two places where it showed the plug under the right side panel it identified a different one so I had to follow the wire from the sensor  :\ .

That was also where I read about the 4k error code (?!?!). Will nip out for a visual inspection now and it would certainly be useful to know where to put the voltmeter. Failing that I have a C&S in my garage waiting to go on, so I guess I'll combine the two jobs if it is the sensor.

seangee:
No quick wins today. Those 2 multiplugs both look clean and dry inside. Found a sensor on flea bay and ordered it after checking the price of a new one. Assume it's not an item that fails often. In the meantime I'll stick to third gear when I know there are cameras about - cos thats the one where I have done a mental calibration between speed and revs  ;)

chitsu:
Righty O! then,
First things first, check that you are getting the 5V feed to the speed sensor, unplug the white 3 pin connector that is located behind the Right Hand Side, side panel (it will be in or around the area of the fuel pump) with this unplugged switch ON the ignition and check the 'WHITE' wire on the BIKE SIDE of the harness, there should be a 5V feed there, if there is 5V there piggy back into the back of the connector (check on either side as I have had problems between connectors in the past) and turn the REAR wheel, if you get 5V-0V-5V-0V the sensor is fine and your fault lies elsewhere.
Rather than complicating things, and assuming one rather than another, carry out this check first and let me know your results. I will try and point you the right direction of what to check next as I had 3 Yam's last year with speedo faults, 2 were pretty much identical in remedy the 3rd was'nt (cheapest fix too  ;) ).
 
On another note I checked the fault code guide & your right about the speed sensor having it's own error code (4K) looking at the C.F.D all 4 items that are enabled with self diagnosis share one common wire which is Black/Blue (B/L), this is unrelated but I personally have never seen this error code, even if you unplug the speed sensor I dont think it shows up like when the other components (EXUP, TPS & Tip over Switch) are unplugged ?
 
Keep me posted, chitsu.

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