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CBR 600F4 1999 - 2000 Honda CBR 600F4 Forum

Need help, not spark at spark plugs


Old 06-27-2016, 11:27 PM
Mat is offline
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Join Date: Jun 2016
Posts: 7
Question Need help, not spark at spark plugs

Good day everybody,
First, I'd like to thank you for accepting me on the forum.
Now that this is done, I have a massive problem on a CBR600F4 1999. The problem is simple as, I have no spark at the spark plugs. I've been looking on the forum for the similar issue and lucky me, I found something. I've been following the troubleshooting chart in the maintenance manual and everything lead to the ICM, however, I tried 5 different ICM and none of them worked. I also tested every single wires/connections/sensors and everything is withing the specs. I don't have any trigger voltage to the coils and that's why the book is keep telling me that the ICM need to be replace. I've been working on the bike for now 20H and I'm running out of ideas. I also spoke with honda service and they don't understand what the issue might be.

I found one similar thread ( it helped but not enough.
I replaced the ignition switch with an OEM one (brand new) because the old one was a complete mess.

Please help me
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