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Breva 1100 SERVICE Light DSB 04 05 06 07

C

cal2guzzi

Just got it firing!
Joined
May 23, 2012
Messages
5
Hi - I have tried my best not to ask questions that have already been answered from past posts but my searches and trials have got me a bit frustrated and asking for advise. Just purchase 07 Breva so don't have much history on it. SERVICE display always comes on just after start up. Nothing active, all in memory - 04, 05, 06, and 07. I have cleared them and they immediately come back. Being a bike I just got went through many things but don't have all the tools like VSDT or vacuum tester and I have never set a TPS. Throttle body by-pass screws are turned all the way in. But I have owned Guzzi's a while - 84 Cal II, 98 EV and did perform a few things

Since it was new to me
- Removed gas tank
- removed airbox,
- looked for things loose or dirty
- ohm tested rev sensor (top of timing case)
- ohm tested stepper connectors
- looked at air sensor for grime
- looked at engine temp sensor for grime
- adjusted valves
- make sure hose connections were tight
- air leak test while bike running (carb cleaner spray near intake, airbox, etc)

At first I thought I did not have any symptoms but eventually realized I have high idle (1800-2000) Don't have a clue if they are related at all but figured I best fix the dash error first. No other symptoms to post.

Any advise or direction to other similar posts would be appreciated

Craig in Cincinnati
 
Download the general service manual from the downloads section. It will tell you the codes. The workshop manual should give you the ohm readings for the air temp sensor. I recognize some of them as oil pressure sender related (07). Others point to immobilizer problem as well as the fuel sensor. If you don't already have VDSTS, it will help in maintaining the bike. See the VDSTS thread on how to set up the throttle bodies and reset the TPS. Once you sort out the sensor problems, that may help with the high idle.
 
John,
Thank you for the reply. I have now checked ohms for engine temp and air sensor. 2.98 and 2.94 at 76 degrees F. Seems to check out OK. Given so far I have found nothing wrong but seeing some posts about the oil pressure switch decided for now to simply replace and see what happens. I don't like guessing but its been many hours and I am ready to try something. :?
 
cal2guzzi said:
John,
Thank you for the reply. I have now checked ohms for engine temp and air sensor. 2.98 and 2.94 at 76 degrees F. Seems to check out OK. Given so far I have found nothing wrong but seeing some posts about the oil pressure switch decided for now to simply replace and see what happens. I don't like guessing but its been many hours and I am ready to try something. :?
Click to expand...

If you mean 2.98 K ohm and 2.94 K ohm then they are probably within limits.
 
Remember these devices are off the shelf and used in many vehicles including those with 4 paws. As a general purpose, one size fits all approach, going down into the big negative numbers will affect some of our North American, Canadian and Northern Europe brethren will be a reality and the ECU just needs to know this fact. When temperatures return to "normal" (after being run for a while) the ECU still needs to know how much or how little it needs to play with the map.
 
Hello, As my problem ended up being some failed add on accessory wiring, I thought it might be a good idea to have this post deleted. I removed all the previous owners wiring and problem resolved. If moderator agrees, please delete. Thank you.
 
cal2guzzi said:
Hello, As my problem ended up being some failed add on accessory wiring, I thought it might be a good idea to have this post deleted. I removed all the previous owners wiring and problem resolved. If moderator agrees, please delete. Thank you.
Click to expand...

Actually now that you have posted the resolution I think it should stay. It is a good example of how not adding circuitry correctly can cause problems. I'm glad you got it resolved and the only real issue was the wiring that was added.
 
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