calebH
New Member
2006 Fz1
Hey everyone, new to the forum, I have an ECU that I think is fried. I bought the bike from another guy who broke the thing (he had no idea what he was doing, he cut a few cables, over tightened zipties, ect.) I am a low voltage electrician, I have rewired a few bikes before and I know some about small engine wiring and general engine work. I don't have voltage to my injectors but I do at fuel pump. If I place my meter leads on red wire in the injector plug and my negative battery terminal I have 12~ vdc, but I don't get any voltage to injectors when I crank. My best guess is ECU died since to my understanding the ECU controls the negative lead on the injectors and the red is constant 12vdc, please help me understand if I'm wrong in that. But if that's true I think I need a new ECU.
I have spark and air.
If you know anyone that has a 06-09 ECU, I could buy it, assuming my troubleshooting is correct.
I could use as much input as possible from y'all.
Thank you!
*Edit*
I have checked all wire continuity and everything seems to check out, injector/fuel pump red is good, green for injector to ECU is good. The only wiring issues I have are with headlights/front blinkers, the cluster is all set up and everything and having headlights/blinkers disconnect wouldn't have anything to do with injection.
Previous owner had fault codes 12 17 22 30 but he cleared them "hoping it would fix the bike".
12- I replaced the crank position sensor.
17- has slip-on so this doesn't matter
22- air temp shouldn't affect injection
30- I rewired this portion and opened it up and it's moving freely so unless the lean sens is physically broken it should be good.
Gone over schematics for the whole bike a couple times now and ECU is my current guess.
Thanks again
Hey everyone, new to the forum, I have an ECU that I think is fried. I bought the bike from another guy who broke the thing (he had no idea what he was doing, he cut a few cables, over tightened zipties, ect.) I am a low voltage electrician, I have rewired a few bikes before and I know some about small engine wiring and general engine work. I don't have voltage to my injectors but I do at fuel pump. If I place my meter leads on red wire in the injector plug and my negative battery terminal I have 12~ vdc, but I don't get any voltage to injectors when I crank. My best guess is ECU died since to my understanding the ECU controls the negative lead on the injectors and the red is constant 12vdc, please help me understand if I'm wrong in that. But if that's true I think I need a new ECU.
I have spark and air.
If you know anyone that has a 06-09 ECU, I could buy it, assuming my troubleshooting is correct.
I could use as much input as possible from y'all.
Thank you!
*Edit*
I have checked all wire continuity and everything seems to check out, injector/fuel pump red is good, green for injector to ECU is good. The only wiring issues I have are with headlights/front blinkers, the cluster is all set up and everything and having headlights/blinkers disconnect wouldn't have anything to do with injection.
Previous owner had fault codes 12 17 22 30 but he cleared them "hoping it would fix the bike".
12- I replaced the crank position sensor.
17- has slip-on so this doesn't matter
22- air temp shouldn't affect injection
30- I rewired this portion and opened it up and it's moving freely so unless the lean sens is physically broken it should be good.
Gone over schematics for the whole bike a couple times now and ECU is my current guess.
Thanks again
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