Cbr 600 re 2009 no spark!! Help
 

My buddy has a cbr rr 600 2009. He crossed terminals when trying to charge his battery and now no spark or fuel injection. He's tested a lot of things and still no fire up. Checked ecu and replaced. Checked rectifier and stater. Everything turns on with lights relays and fuel pump amd dash. All fuses are checked and good to go. Diode was checked balance sensor kick stand sensor also the ignition switch was checked and replaced the ignition entirely. Please help!

Hi Bob, just to recap , the bike turns on , fuel pump primes ,engine turns but wont fire , no spark . I keep asking this one to all no start issues , have you got 12v in and 12v out at the kill switch with switch at run

We have not checked that. Not really sure how to go about doing so. We looked inside to see andything broken or loose but didnt really see anything out of the ordinary.

Can use the Multimeter or get one of these.
https://www.ebay.co.uk/itm/6-12-volt...YAAOSw1vlUvI0S
The wires to test are Black and White/Black in the kill switch

He's got correct voltage in both wires still have no idea what the problem is

Any fault codes showing, if not crank the engine for more than 10 seconds and then read the faults, are injectors running that is getting fuel, are you getting spark

Weve definitely cranked it good to try getting her going. No fault codes showing up. There is no spark or fuel coming out of the injectors.

Have you tried swapping the Headlight relay with the Engine stop relay

How did you check the fuses? Did you check ALL of them?