| The engine control unit (ECU) has a access hole covered by a removable rubber bung. Note that the Eprom chip has a notch on one side, so note its location on the installed chip before removal so that you don’t install the new one backwards. Using a chip-puller will make removal easier. Wait at least a minute after shutting off the bike before you pull the chip to let the computer do some housekeeping.
Take care to not bend any of the 28 pins when inserting them. Slightly inserting 14 on one side first, and springing them to insert the other side into their sockets is the way I did it. The clue that you have it right is the fuel pump firing up when you turn on the ignition key.
If you have a idling problem after installing the new chip, the best approach is to have your dealer re-adjust the exhaust emissions CO level. Or you can adjust it yourself. There's a CO trimmer screw adjustment on ECUs that provides for limited changes in fuel mixture at idle (with lesser effects across the RPM range).
The trimmer on your model is a potentiometer located next to the EPROM chip socket inside the ECU. It has a range of about 3/4 turn, so be careful, if you try to turn it more, it'll break off. When you rotate the trimmer screw clockwise, the injector's duration is shortened so the mixture is leaned. Counterclockwise gives a richer fuel mixture. The default position is it's rotation mid-point. The trimmer adds/subtracts a millisecond or so to each fuel pulse over the entire RPM range. So go easy, an eighth-turn on the screw is often all that's usually needed to cure low-speed rideability problems.
Always a good measure of fuel mixture is to check the color of the inside of the tailpipe. After a few hundred miles it should be medium-to-dark gray, not black or sooty.
The oil warning light tells you when the oil pressure is low.
The pressure is always lowest when the oil pump is at its slowest at idle and when the oil viscosity is the lowest (when its hot after a good run) so that's when it'll first come on. Try a higher viscosity 50W synthetic oil if you haven't already to raise the pressure a little.
Also, the Ducati oil pressure sending units are somewhat unreliable and often need replacerment, but keep in mind that if your oil pressure light starts coming-on above idle speed don't run the engine until you diagnose the problem.
[Edited on 7-26-2005 by Shazaam!]  |