(For the sake of others reading this thread for reference with their own TPS issues) Don't hit that Reset TPS button if the bike is fitted with a non-linear PF3C, as you won't recover it. Only the Linear TPS can be reset via the software, but it does allow you to try resetting a non-linear one, and fecks the ECU: https://www.ducatiforum.co.uk/threads/1000ssie-ds-tps.82715/#post-1760014 http://www.bikeboy.org/ducati2vthrottleb.html Credit as ever to chrisw/Geoffduk for this info. Nasher.
have we established if it's the same ECU as the MK2 Punto? if it is then this might be of interest. worn, incorrect or even if correct plugs but different makes can interfere with the CAN system and switch off the engine ECU after a certain duration. the only way to get it to run again is to reset ECU. either by disconnecting the ECU/battery or deleting any spurious errors. if i mind right you could just leave it switched off for about half an hour. i've only seen it once about 10years ago. after the car had just been serviced elseware. only 3 of the 4 plugs had been changed. you could pretty much draw a line on the road where it would cut out. every time on a test drive.
Well this is going nowhere fast. New CPS fitted and no change - she still stall as she warms up. She starts fine, the engine temp rises to 50 degC, then the ignition advance increases from around one degree (when cold), to around 10 degrees and she stalls. So what happens at 50 degC to cause this ? I am in the process of getting the JPDiag licence so I can do a TPS reset, is that really going to help ?? I did disconnect the battery finm - but no difference. No faults recorded on IAWDiag either. Merry Christmas to all !!
what a pain for u mate . tps reset is free with iawdiag so no need to pay jp. from your work so far i'd say that charging circuit voltage drop is still the likely cause, but having already replaced the reg/rec and stator then I'm at a loss to know as understand why
Many thanks for your input funkatronic, I see the TPS reset in IAWDiag, but when I select and press start nothing seems to happen unless it does the reset behind the scenes. She has a new battery but will hook up the ride-on. My gut feeling is that the problem is temperature related -
I can only relate to how my 2004 monster 1000 which shares roughly the same engine but with a different throttle body . Yours is servo assisted I think. Anyway from ownership (new) and through to over 150k miles it’s never deviated from this. Throttle body reset at 3 degrees. Startup using fast idle bike fires up. Whilst no temperature shown on instrument which is purely visual the ECU takes over and using the oil temp (from horizontal cylinder) , air, humidity and fuelling map the ECU controls the tick over and raises towards 2000rpm. Still possible to raise above this with fast idle but once started I back off. Whilst accelerating responsive to throttle but doesn’t drop much below 2000rpm. Now once 50 centigrade pops up obviously oil temperature rising nicely and between 50 to 60 centigrade the tick over backs off nicely to 1000rpm and runs perfectly. If she starts occasionally cutting out say beyond 90 centigrade then it’s always correlated with a closer shim out of spec which is a critical feature for these engineers. Re shim and all good again. In my opinion it’s once your ECU is starting to read the TPS for idle and if incorrect the bike cuts out. Anyway that’s how my bike behaves and I’ve a large number of miles covered observing this. In the winter other characteristics are very noticeable. Something also observed on my large mileage 1098.
The licence from JP doesn’t cost you unless your going to set up a service centre ? He generates an initialisation file unique to your machine and will contain the default TPS angle for your bike. As I’ve said previously my monster 1000 is open loop with no lambda sensors and is set to 3.0 degrees. Found this which you might find useful. Taken from a Ducati Service Bulletin (@ Sport Classic Net) Info as of 27 Jan 2007 lease keep in mind that every time you replace the fuel injector electronic control unit (ECU) or the instrument panel you must properly re-set the throttle position sensor (TPS). DNA also recommends performing this operation to all new Ducati motorcycles during Pre Delivery Inspection. For your reference, listed below are the relative TPS reset values for the following models: Model-----------Throttle opening (Degrees)--------Linear M695-----------2.7 +/ - 0.1------------------------YES S2R 800--------2.7 +/ - 0.1------------------------YES S2R 1000------3.2 +/ - 0.1-------------------------YES S4R-------------2.7+/ - 0.1-------------------------YES S4R S-----------2.7 +/ - 0.1------------------------YES SS 800----------2.7 +/ - 0.1------------------------YES ST3-------------3.0 +/ - 0.1-------------------------YES ST3S-ABS------3.0 +/ - 0.1-------------------------YES MTS 1100------3.0 +/ - 0.1-------------------------YES MTS 1100S-----3.0 +/ - 0.1-------------------------YES HM 1100--------3.0 +/ - 0.1-------------------------YES HM 1100S-------3.0 +/ - 0.1-------------------------YES 999S TEAM USA ------------------2.3 +/ - 0.1-------------------------YES 1098-1098S-1098 TRI-COLORE ------------------2.6 +/ - 0.1-------------------------YES GT 1000---------3.2 +/ - 0.1-------------------------YES SPORT 1000 BIP ------------------3.2 +/ - 0.1-------------------------YES SPORT 1000S---3.2 +/ - 0.1-------------------------YES Throttle position sensor description Sport Classic range Operating description It provides the ECU with a variable voltage ranging from about 0V up to nearly 5V depending on throttle opening angle; The electric signal sent by the throttle position sensor is also used to determine how quickly the throttle is being opened or closed. The ECU processes this signal using its engine control strategies to determine ignition advance and injection time depending on engine load, acceleration (pick-up pump function) and deceleration (cut off function); It is mounted on the throttle body and moves with the throttle shaft. Electric specifications Resistance measured across terminals A and B of the throttle position sensor with the connector disconnected should be about 1100 Ohm; Resistance measured across terminals A and C of the throttle position sensor with the connector disconnected should rise from about 1100 Ohm up to nearly 2000 Ohm when the throttle is turned from the fully closed to the fully open position; Connect the connector on the throttle position sensor (ensure that the Engine and Body connectors are plugged to the ECU). Turn the key to on and check to ensure that voltage across terminals A and C of the throttle position sensor rises from about 420 mV up to nearly 4.2 V when the throttle is turned from the fully closed to the fully open position; Connect the connector on the throttle position sensor (ensure that the Engine and Body connectors are connected correctly on the ECU). Turn the key to on and check voltage across terminals A and B of the throttle position sensor connector; reading should be about 4.9 V (view throttle position sensor circuit). Diagnostic capabilities The ECU recognizes the following errors: Short circuit to ground (CCGND) Open circuit or short circuit to battery voltage (CA CCVBatt)
