Working on said bike. NO electrical power at all. 12.6 Volts at the battery. Same voltage at the PCM going in (the aluminum finned box up front). Now the kicker. Only 5.5 V coming out the other side going up to the key switch. Any advise please??

 

Ops, forgot to mention, I replaced the PCM about 6 months ago, and the bike has been run less than 200 miles since.

 

Don't overlook a battery even if voltage appears good. Loose connections,dead/sulfated cell in the battery can cause problems.Load testing would eliminate it as a problem.Unless you want to place it on Digital Wrench to remove any doubts of what may be frying the pdm(either a stator,ecu, or other wiring shorts),I'd suspect another pdm module failure.Pdm controls too many things,has too many circuit breakers that can fail.Same thing on ecm modules on the carb models.

 

Thanks OPT. You think Digital Wrench will tell the tale?

 

On a faulty pdm or ecu module,yes Digital Wrench can spot it! If it's a wiring short,may be harder but can help track down the general area better than just throwing parts at it.Only so much you can do on efi machines at home with a meter. Home diagnostic scanners are starting to be available,but still too expensive for the average owner for a one time use.

 

Thanks again, much appreciated.