PNW-FZ6
New Member
Hey all, new around here so I hope I'm doing this right!
I recently picked up an '07 FZ6 S2 with ~10k mi., on the test ride and on the way home I didn't notice any issues- the bike ran great. However after doing some slow speed practice in a parking lot on the ride back home the check engine light would come on at around 4k RPM and turn back off at lower RPM's. I've gone out and replicated the problem 3 or 4 times now in the exact same way, it takes ~15min. of riding for the light to start going on and off as I have described.
Of course, the first thing I did was check the diagnostic mode and saw that I had a code 46. I then checked the FSM and noted that the code means that FI system is not receiving normal voltage and that it is probably an issue with the charging system. After scouring the web and reading through these helpful threads:
I went ahead and tested my battery, stator, and RR, with a multimeter and all measurements check out and are within FSM specs (battery fully charged - 12.8V (measured after bike sat overnight), stator resistance within 0.23-0.32 Ohm. range, and RR pins showing 0, 0, 0/~500, ~500, ~500). I also checked all the fuses and connectors, including the ECU connector and nothing is blown, dirty, or corroded. Even the charging voltage is fine on cold start, it settled in the 13.9-14V range and increased up to just above 14V at 5k RPM.
So, everything seemed fine and I went out again to see if I could replicate the issue and measure the charging voltage after the check engine light had been going on and off. When I came back after the light did the 'on at charging RPM, off at non-charging RPM (after ~15min.)' thing while riding, I checked the charging voltage at idle and it read low, 12.6-12.8V and when increasing to 5k RPM it climbed all the way up past 15V. I am guessing the bike reads low at idle to clear off any excess charge from the overcharging?
The only thing I have not checked are the grounds as I can't seem to find any information online or in the FSM I have about where they are (seriously, even doing a ctrl+f in the FSM pdf for "ground" doesn't tell me much - maybe I am blind or dumb but I can't find the ground locations...).
Anyways, does this sounds like a blown regulator, as the internet suggests, to anyone with more experience than me? It seems like once the bike gets up to temp and parts start getting warm after that 15min time period while riding, the regulator stops shunting excess voltage from the stator leading to an overcharging issue that trips the check engine and throws the code 46. I have a new OEM RR and battery on the way already, I am just concerned that maybe something else would have caused the regulator to go bad because the bike only has 10k mi. on it? The only mod on the bike is aftermarket LED turn signals (front and rear) which the PO installed and I don't think would have an effect on the overcharging charging system (right?).
Thanks in advance- any help, advice, opinions, are welcome!
I recently picked up an '07 FZ6 S2 with ~10k mi., on the test ride and on the way home I didn't notice any issues- the bike ran great. However after doing some slow speed practice in a parking lot on the ride back home the check engine light would come on at around 4k RPM and turn back off at lower RPM's. I've gone out and replicated the problem 3 or 4 times now in the exact same way, it takes ~15min. of riding for the light to start going on and off as I have described.
Of course, the first thing I did was check the diagnostic mode and saw that I had a code 46. I then checked the FSM and noted that the code means that FI system is not receiving normal voltage and that it is probably an issue with the charging system. After scouring the web and reading through these helpful threads:
Error code 46 - check engine light comes on
I have a 2007 FZ6 S2, weirdly my bike seems to be running fine, but while riding around town (30mph, around 4k rpm and a lot of stop and go) after about 20-25min my check engine light comes on. I checked the error codes by going into diagnostics mode and error 46 comes up. The service manual...
www.600riders.com
2006 FZ6, error 46
I'm having an intermittent electrical problem with my 2006 fz6. Just for more info, at the end of last years' riding season, I replaced the starter relay and starter motor brushes because there was some cranking problems. It seemed to fix all the cranking problems. Cut to last week, after...
www.600riders.com
I went ahead and tested my battery, stator, and RR, with a multimeter and all measurements check out and are within FSM specs (battery fully charged - 12.8V (measured after bike sat overnight), stator resistance within 0.23-0.32 Ohm. range, and RR pins showing 0, 0, 0/~500, ~500, ~500). I also checked all the fuses and connectors, including the ECU connector and nothing is blown, dirty, or corroded. Even the charging voltage is fine on cold start, it settled in the 13.9-14V range and increased up to just above 14V at 5k RPM.
So, everything seemed fine and I went out again to see if I could replicate the issue and measure the charging voltage after the check engine light had been going on and off. When I came back after the light did the 'on at charging RPM, off at non-charging RPM (after ~15min.)' thing while riding, I checked the charging voltage at idle and it read low, 12.6-12.8V and when increasing to 5k RPM it climbed all the way up past 15V. I am guessing the bike reads low at idle to clear off any excess charge from the overcharging?
The only thing I have not checked are the grounds as I can't seem to find any information online or in the FSM I have about where they are (seriously, even doing a ctrl+f in the FSM pdf for "ground" doesn't tell me much - maybe I am blind or dumb but I can't find the ground locations...).
Anyways, does this sounds like a blown regulator, as the internet suggests, to anyone with more experience than me? It seems like once the bike gets up to temp and parts start getting warm after that 15min time period while riding, the regulator stops shunting excess voltage from the stator leading to an overcharging issue that trips the check engine and throws the code 46. I have a new OEM RR and battery on the way already, I am just concerned that maybe something else would have caused the regulator to go bad because the bike only has 10k mi. on it? The only mod on the bike is aftermarket LED turn signals (front and rear) which the PO installed and I don't think would have an effect on the overcharging charging system (right?).
Thanks in advance- any help, advice, opinions, are welcome!