Tachometer jumps to 5K, couldn't find any info on error

[MC680x0]

I have done
:wall I give up and tired of this so good luck arieljt , I'm outta here

[darrsi]

I have done
:wall I give up and tired of this so good luck arieljt , I'm outta here

Actually all you've done is explain symptoms of a faulty TPS!


Doesn't matter, 'cos you won't be reading this anyway.  :b

[MC680x0]

nope, soz, still here mate. if I get that pissed off I normally sign off with "un-notified, good luck!"

in this case it is simply too amusing too let go. I mean the guys has been advised / told several times. he wants the help but isnt acting on it. there can only be  surely 4 root cause failure modes here, in order of my evaluation (based on likelyhood, cost and complexity to diagnose...)

1. TPS
2. ICU
3. Clocks
4. wiring

1. TPS adjusts voltage fed to the ICU so the return volts to the clocks can and will vary if there is a problem; without knowing every single failure mode of a TPS/ICU combination and the corresponding voltage routed to the clocks, one cannot assert with confidence that the 5K problem is not the TPS, even if it is disconnected and the clock still reads 5K, you dont know what the TPS/ICU has caused, that in turn has led to the anomalous error if indeed the error is anomalous? I suspect however that the ICU is a simple CDI unit ?? but have not seen a diagram of the fazer 600 ICU internals
So all can be done simply and relatively cheaply using a breaker part or something , is to replace the TPS and reset the system. This is the easiest and quickest fix, and has worked before on  a 5K error I was working on.

2. If the TPS fix doesnt work then a simple swap out of the ICU is called for; you can pick one up off fleabay cheap as chips:
http://www.ebay.co.uk/sch/i.html?_kw=yam...ition+unit
The OP may wish to try this first (than the TPS) but I've never heard of an ICU fail - for sure they do - I just never heard of one since 1989 hence the TPS suggestion from me. So then the OP has to sell the ICU and I dont hear much call for ICUs but plenty of demand for TPSs !!

3. If the TPS nor ICU fix solve the problem, then we're looking at the clocks or wiring; clocks may be providing erroneous values. The clocks can be tested on a bench with a power supply with a selectable voltage output; the tacho works on volts and this can easily be driven; however, the OP would need to remove the tacho, get a selectable power supply, and do some bench testing. Even then, if the clocks are in error, then he'd still have to buy a replacement. Hence the TPS and ICU fixes came first above; cheaper and easier to diagnose.

3. If the TPS, ICU and clocks hasnt fixed the issue, then its down to wiring. To strip the bike and trace the wiring through all the looms and check all wires. Good luck!

so there you are, an explanation as requested.

[darrsi]

Thank you, and you made it sound so interesting too.  :lol

[MC680x0]

Strange, cos I fell asleep when compiling that crap  :lol

[arieljt]

nope, soz, still here mate. if I get that pissed off I normally sign off with "un-notified, good luck!"

in this case it is simply too amusing too let go. I mean the guys has been advised / told several times. he wants the help but isnt acting on it. there can only be  surely 4 root cause failure modes here, in order of my evaluation (based on likelyhood, cost and complexity to diagnose...)

1. TPS
2. ICU
3. Clocks
4. wiring

1. TPS adjusts voltage fed to the ICU so the return volts to the clocks can and will vary if there is a problem; without knowing every single failure mode of a TPS/ICU combination and the corresponding voltage routed to the clocks, one cannot assert with confidence that the 5K problem is not the TPS, even if it is disconnected and the clock still reads 5K, you dont know what the TPS/ICU has caused, that in turn has led to the anomalous error if indeed the error is anomalous? I suspect however that the ICU is a simple CDI unit ?? but have not seen a diagram of the fazer 600 ICU internals
So all can be done simply and relatively cheaply using a breaker part or something , is to replace the TPS and reset the system. This is the easiest and quickest fix, and has worked before on  a 5K error I was working on.

2. If the TPS fix doesnt work then a simple swap out of the ICU is called for; you can pick one up off fleabay cheap as chips:
http://www.ebay.co.uk/sch/i.html?_kw=yam...ition+unit
The OP may wish to try this first (than the TPS) but I've never heard of an ICU fail - for sure they do - I just never heard of one since 1989 hence the TPS suggestion from me. So then the OP has to sell the ICU and I dont hear much call for ICUs but plenty of demand for TPSs !!

3. If the TPS nor ICU fix solve the problem, then we're looking at the clocks or wiring; clocks may be providing erroneous values. The clocks can be tested on a bench with a power supply with a selectable voltage output; the tacho works on volts and this can easily be driven; however, the OP would need to remove the tacho, get a selectable power supply, and do some bench testing. Even then, if the clocks are in error, then he'd still have to buy a replacement. Hence the TPS and ICU fixes came first above; cheaper and easier to diagnose.

3. If the TPS, ICU and clocks hasnt fixed the issue, then its down to wiring. To strip the bike and trace the wiring through all the looms and check all wires. Good luck!

so there you are, an explanation as requested.

I do listen and do act according to your advice and I do value it greatly, I'm sorry if it seemed otherwise 

I'll answer each diasgnosis:
1 - TPS - The TPS was disconnected and the battery of the bike was removed and replaced. The bike was fired up and the tacho still shows 5K regardless of TPS connected/disconnected.
2 - ICU(/+TPS) - The ICU unit of the bike was replaced with a working ICU from another costumer's fazer of the same model and year, the tacho still showed 5K (also regardless of disconnecting - connecting the TPS).
3 - Clocks - The clocks was blamed to be faulty by the Yamaha garage, they said that it's likely that the previous owner connected a car to jumpstart the motorcycle which fried the clocks. I didn't replaced them as it was way too expensive for me at the moment.
4 - Wiring - I mentioned before that I checked the wiring between the ICU and the TPS and they were good. I didn't check the wiring between the ICU and the clocks though, but i believe that they are good since they rest of the clock's light functions correctly.

I would like to thank you all for helping a new fazer owner with his troubles! it's not for granted to have such a great community supporting  :thumbup

I think the next time I update this thread will be when I get my hands on a new set of clocks or when I found out the problem ultimately (A-men).

for now, I have problems with the carbs flooding and i'm on a new adventure with it, and i'll open another thread when I gather my thoughts.
Once again, Cheers mates!

[unfazed]

http://www.ebay.co.uk/itm/YAMAHA-Fazer-F...35da62c2e5

http://www.ebay.co.uk/itm/TPS-SENSOR-SUZ...5d4fe2988d

[MC680x0]

http://www.ebay.co.uk/itm/YAMAHA-Fazer-F...35da62c2e5

http://www.ebay.co.uk/itm/TPS-SENSOR-SUZ...5d4fe2988d

He doesn't need the TPS  :b (didnt know the SV fits, I knew the TPS off the early TDM works too) but he has already decided its a clocks problem so great link although that yellow dial would have to go but hey, beggers/choosers.

[arieljt]

http://www.ebay.co.uk/itm/YAMAHA-Fazer-F...35da62c2e5

http://www.ebay.co.uk/itm/TPS-SENSOR-SUZ...5d4fe2988d

That's pretty cheap, sucks it's 55K when I have only 21K, I might order an old clock set and just replace the tacho in mine 

[darrsi]

[quote author=unfazed link=topic=14224.msg167869#msg167869 date=1411586699]

http://www.ebay.co.uk/itm/YAMAHA-Fazer-F...35da62c2e5

http://www.ebay.co.uk/itm/TPS-SENSOR-SUZ...5d4fe2988d

He doesn't need the TPS  :b (didnt know the SV fits, I knew the TPS off the early TDM works too) but he has already decided its a clocks problem so great link although that yellow dial would have to go but hey, beggers/choosers.
[/quote]


What was that???
Did i hear you say he DOESN'T need a TPS???  :pokefun

[MC680x0]

He has decided he doesn't need a TPS , he made that clear above. I was merely paraphrasing his diagnosis, not mine

[darrsi]

He has decided he doesn't need a TPS , he made that clear above. I was merely paraphrasing his diagnosis, not mine

Oh, i see......  :lol

[MC680x0]

Nice  try tho mate 

[darrsi]

Nice  try tho mate 

You are joking, obviously?  :look

[MC680x0]

I couldn't give a shit TBH ... Like most people here, I help out, I receive as well. Nobody is forced to listen to me and visa-ve . upto him

[unfazed]

Your teasing him aren't you Darrsi  :rollin

[MC680x0]

And there was me thinking I was doing the teasing ... Too predictable

[unfazed]

And there was me thinking I was doing the teasing ... Too predictable

Therein lies your problem THINKING 

[MC680x0]

[quote author=tweetytek link=topic=14224.msg168000#msg168000 date=1411664791]
And there was me thinking I was doing the teasing ... Too predictable

Therein lies your problem THINKING 
[/quote]
ah shit, of course