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Discussion Starter · #3 ·
correct. are there any other main ground points other than the main ground point under the BAS, the red junction in the middle of the harness and the green junction by the headlights?
 

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correct. are there any other main ground points other than the main ground point under the BAS, the red junction in the middle of the harness and the green junction by the headlights?

On top of the swingarm mounting bracket I think?
If you're concerned about the ECU not earthing check for continuity between battery negative and the earth pin in the ECU harness connector.
 

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Discussion Starter · #5 ·
perhaps i should elaborate more...

btw good call on the continuity test. im just tired, been staring at this bike for a few hours.

i believe i'm not getting the switched ground from the ecu for the fuel pump cutoff relay. the brown wire w/black stripe.

the engine cut switch, run switch, ignition switch, BAS, fuses all function. if i jump the fuel cut relay it runs fine.

is there a way i can test the brown wire with the black stripe for a signal?
 

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Discussion Starter · #6 ·
i've been through everything i could find searchimg several forums and it seems as though the ecu must be bad.

it seems to me that the engine wouldnt run period if the ecm was damaged but perhaps i've just lost that one particular circuit? wtf?
 

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I’m having the same issue, had spare relays, ecu, harness, switches, bas, and etc off a parts bike. I can only assume that it’s a bad ground circuit in both ecus controlling the particular ground to the fuel cut relay. I ended up tapping a ground into the brown/wire ground that heads back into the ecu. Ran it to the negative terminal on the battery. Now the fuel pump is controlled by the kill switch and the ignition. I don’t have the ecu prime anymore. But the bike now runs great.
 

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I’m having the same issue, had spare relays, ecu, harness, switches, bas, and etc off a parts bike. I can only assume that it’s a bad ground circuit in both ecus controlling the particular ground to the fuel cut relay. I ended up tapping a ground into the brown/wire ground that heads back into the ecu. Ran it to the negative terminal on the battery. Now the fuel pump is controlled by the kill switch and the ignition. I don’t have the ecu prime anymore. But the bike now runs great.

hi there so im having the same issue on my 01 929rr! firs thing tht happend bike felt like itwas going to stall and thne it just died ! two days later found tht fuel cut off rely went bad. replced it not only 24 hours later bike died found stator / rr went bad ... i replaced the whole chargiging system ! once back together bike rode so amazing to only find it the next morning dead again . had a mobile mechanic ccome out to basicly tell me that my ecm was bad so i brought my baclk up one it some how was faulty to ... SMH !!!nowwy any way he say that it gets pwer going but not out going to the fuel cut off so ... i was just told bout the main ground which i thought was just the loction under the bas !!! so the rd junction box in the middle of the main harness is a main ground so i was told to take tht box out and harwire it .... is tht kinda wht you did ... please nedd sone advice
 

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night be something else. have you 12v to the injectors and coils? Black wire with white stripe. also that the crank sensor s providing a pulse when cranking, just a couple of things to look into - unlikely for 2 ecu's to fail unless the charging circuit fried them - were they both from that bike, or one a spare from elsewhere, do you know if it was good?
 
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