F4i fuel pump not priming/injectors getting power when bike is OFF?
#51
Well, usually they lose just one or two circuits from having external power-applied in desperate troubleshooting measures. Power Probe tool is one of most evil devices ever to exist. Commonly used by people who don't know proper troubleshooting techniques. Many professional mechanics have no clue!
There's also possibility of harness issues frying ECU. I've seen people have to replace ECUs 2-3x because they die after a while. Not sure exact cause. Could be short in harness maybe?
There's also possibility of harness issues frying ECU. I've seen people have to replace ECUs 2-3x because they die after a while. Not sure exact cause. Could be short in harness maybe?
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dannoxyz (05-30-2024)
#52
I got the ECU plugged it in and nothing changed, FI light is still solid
#53
#54
Well shoot. Alright ive been following the form with you a GB83 or whatever so imma start from when he bought his ECU and work my way down.
#55
my exhaust air inject solonoid valve plug doesnt plug into anything (might be bc i have a diff pipe) ??
#56
Took all the wiring harnesses out, stripped them, found little to no abnormalities or messed up connections, cleaned all the plugs and just got done putting it in the bike, go to start it and same issue, solid FI light, I also noticed my ECU is a Cali ECU (38770-MBW-A12) and the one i bought is a Non-Cali ECU (38770-MBW-L11) you think that makes a difference?
#57
Took all the wiring harnesses out, stripped them, found little to no abnormalities or messed up connections, cleaned all the plugs and just got done putting it in the bike, go to start it and same issue, solid FI light, I also noticed my ECU is a Cali ECU (38770-MBW-A12) and the one i bought is a Non-Cali ECU (38770-MBW-L11) you think that makes a difference?
Im lost in the sauce, im
glad i have a 04 cbr1000 but I need to get my F4i up and running before leaned back in Chicago im a dusty rusty man at this point.
It was the diode... im so slow lmao.
i used this diode: https://www.digikey.com/en/products/detail/onsemi/1N5228BTR/1992219
I wasted so much time and dollas on all the wrong diodes and a whole new ECU lol.
Last edited by Micaelbizzap; 07-12-2024 at 01:04 PM.
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