Triumphrat

Bixxer Bob · 07-25-2009, 01:46 PM

3800 revs high in fact. Came back from the dealer like this (it's a long story) Rev counter thinks 3800 rpm is zero, works fine otherwise. I checked the ECM output with my OBD2 software and it's correct, so I think the fault is either the rev counter or the wiring. Anyone had this?

iansoady · 07-26-2009, 05:58 AM

The only thing I can contribute (and this is probably misleading) is that there is a test on Tuneboy and the dealer's gameboy that moves the rev counter to 3750 rpm, which is about what you're seeing. I assume this is done by closing a switch in the ECU. This may point to a short somewhere in the plug / wiring - it's plug 2 on the ECU IIRC. I'd unplug the ECU and clean up the connectors / pins.

Also of course worth checking the connectors behind the fairing.

Bixxer Bob · 07-26-2009, 05:31 PM

Thanks for that. I suspect the remap might not have quite gone according to plan and that may be causing it.

I've checked the connectors behind the clocks and they're ok, I intend to do an end-to-end on the tacho feed next.

My hypothesis is that open circuit is zero revs and that grounded is max revs hence a resistance in the wire will cause a false reading.

Of course, if the tacho reads a pulse, ( zeros and ones) then my theory is rubbish. Time will tell....

iansoady · 07-27-2009, 04:32 AM

I suspect that the ECU will do the "calculation" and just send a voltage to the clock but have no idea whether this is in fact true.

I've searched all over for information about how exactly the ECU works but in vain.

Oh, BTW according to the wiring diagram there is a 1.2K resistance in the circuit to the clock - perhaps this has failed?

Bixxer Bob · 07-27-2009, 12:41 PM

I noticed that, but I think that's a supply line because it goes to all the other instruments and they are working fine. I think the pink / red to A1 in the ECM gives the gauge it's reading. I will check it though, thanks.

Bixxer Bob · 07-28-2009, 03:38 PM

Well, everything checks out ok. All earths are good, resistor value is bang on, connections to ECM are all good.

Methinks this is down to something the dealer did so will discuss with him tomorrow, perhaps left the rev counter test at 4k???

Bixxer Bob · 08-06-2009, 12:57 PM

So far I've expended £90 on the dealer for screwing up my bike for me. Another similar amount on a spare ECM and £260 on a Tuneboy (yet to arrive).

Progress so far - the ECM was a SAGEM S1000 same as the Tiger, but from a 955i Daytona. Plugged it in tonight and hey presto, the rev counter problem goes away. And she runs on the Daytona map, although she won't tick over. Throttle response was pin sharp though and sounded aggresive. (Daytona has different cams and way more fuel added and ignition advance than the Tiger so I'm surprised she ran at all really). So when the Tuneboy arrives, I'll remap my ECM and keep the Daytona one as a spare.

All this because the dealer couldn't identify that my battery was shot and loaded a corrupt map three times before he gave up. Did I say originally I thought he was being reasonable???? Yeh right!!!

He's cost me close on £500 and many hours of my time to fix something he did. Thankfully, I didn't let him persuade me I needed a new ECM!!! Problem is I can't prove any of this because he insists it was my farkles that introduced the problem. Only thing I don't understand is he used a jumper battery while he was working on the remaps, so I guess not only did he not spot my battery was u/s, but he didn't spot his own is a dud as well.

iansoady · 08-07-2009, 06:47 AM

I have to say I'm not surprised to hear of (yet) another incompetent dealer.

crowtherstephen · 08-07-2009, 11:20 AM

What a spoon this dealer must be - i woudl go into the shop... pick a busy day, and shout until he gives you your money back.... he will do it just to get you to leave!!!

Bixxer Bob · 08-11-2009, 04:29 PM

After three weeks, I'm now back to where I started before the dealer screwed up big time, including I fixed the errant rev counter.

In the last couple of days, my Tuneboy arrived and that, plus hours of reading everything I can about the Sagem S1000 ECM (there's loads of good info on the Tuneboy site for starters) I have drawn the following conclusions:

1. The dealer's a dick.
2. The rev counter reading 4k with the engine stopped was caused by an incorrect (note not corrupt) map.
3. Did I mention the dealer's a dick?
4. The throttle bodies not fueling was caused by low battery voltage.
5. The dealer's still a dick.
6. A new battery and a remap back to standard fixed all of the above probs in about 5 mins.
7. The dealer's dickness is not improving...

What I worked out is that problems the dealer said were caused by either my farkle wiring or a bad earth or both, was in fact a duff battery. New battery solved those problems.

The rev counter problem was more interesting... the map the dealer loaded just before the problems started was for a 2005 Speed Triple tune(God only knows why he did that). I discovered the ECM tune has two parts: a base program and the map. The Tiger base is the same as the base of the Daytona ECM that I bought from Ebay - explaining why that cured the rev counter problem temporarily even though it didn't run very well because the fueling was wrong. However, the Speed Triple has a completely different base program - hence the rev counter playing up. As soon as I loaded the standard Tiger tune the rev counter behaved normally. Engine runs smoothly so if I have time, I'll take her for a run tomorrow night.
:lol: