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Cbr900rrw (UK) - No Spark

CBR 900RR - CBR Forum - Enthusiast forums for Honda CBR Owners - cbrforum.com
Hi all,

New to the group! I've have a confession to make, I kinda caused this problem Rtfm my dad used to say (he'll be looking down on me shaking his dead no doubt!).....

So, my cbr900rrw is a UK 1998 model. Its been sat for two years for to personal reasons and I'm working on getting it up and running again. Compete service! I cut the pink wire on the ignition side of the harness without realizing it would cause issues, I was looking for a 12v feed only with the ignition on amd that was one. Now my problem is that I do not get any spark whatsoever.....

A few days before this, the bike was fine on my bench. I crimped a new the connector to the wire I had cut splicing another wire into it. After realising this killed me spark. I removed everything but cutttikng above the splice (one the ignition switch harness side) and crimping a new connector in. I poked this back into the black block but she still isn't firing!

I've tested the harness side and get 12v to the coil but nothing out of them on the ht lead side.

As it worked a few days ago is unlikely both coils hadlve packed up, it feels life I've blown something but i just don't knits what.... Everything else works as it should, main lights, horn, all the instrument cluster lights (speedo/rev counter , oil light & mileage count). I've checked all fuses (that I know of) and couldn't find any of them broken.

I've not touched anything else on the bike, ignition pickup sensor etc so i cant see why that wpuld suddently fail.

I read online in this forum that the pink wire serves 9v to the ecu (icm or ecm) and that's from the diode within the ignition switch itself. I have 0 volts on the pink wire where ot meets the ignition plug. Weirdly I have 3.81v continually on the pink wire where it comes into a black 3 pin block from the gearbox (green & black & pink block) this block is to the right of the carbs.... This is the only place where the pink has voltage.

I have checked the ignition dope an b that is connected and had 12v on one side but not the other. Is that the cause or an I missing something?

I'm totally stumped guy/gals. Please help me.

Cheers,

Stu


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