hi. i won't be able to give you all my test results / ideas etcetra this first post as they are too many and the problem started a few months ago. but i can fill in the missing gaps when required. i also have a A3 colour wiring schematic, which i can get to you somehow. i'll see if i can use photobucket for now.
the problem happened in mid winter when i was trying to fit a set of heated grips. after 2 days, the fi LIGHT CAME ON SHOWING THE CODE AS A FAULT FOR THE PRIMARY INJECTORS. all four of them. the bike is a 2008 hayabusa and i suspect the injectors are healthy. i have tried another ecm and the problem still persists.
the strange thing that happens is this; i bared the wires on part of the loom, down to the individual colours, hoping to find a bad connection/ faulty connector. so with the ignition switch on, but no ignition (due to the fault) i started fiddling with connectors wires etcetra, and the ignition system started priming itself. i could touch an injector connection, and even just bury my fingers in the open wiring loom and the ignition would cut in and out. i thought therefore that there must be some sort of static electricity saturating the wiring system. i eventually discovered that if i disconnected the connector for the front headlight / indicators that the static was cleared albeit temporarly. so i was hoping someone with electronic experience would be able to diagnose, at least what component would cause this type of failure. any more info you need please don't hesitate to ask ,,, thanks.
**broken link removed**