| Author | Message | ||
     Bsdfool |
Had the R in the shop for a new IC and a water pump weep. Upon getting the bike back I'm now having issues with system voltage. For the first 15 minutes or so (or until the bike is thoroughly warmed up) any time I get the revs over 4500 or so it throws the error - no tach, no speedo, battery light, system voltage in the display, headlights get a bit brighter. Pulling the clutch and letting the engine idle clears the error after a few seconds, but very high voltage is displayed for several seconds afterward - I've seen 18.0 volts. No CEL, no codes. I found another thread that said the voltage regulator was the problem but given that the engine was rotated for the water pump work, could it be a poor ground instead? I think I'd rather solve this myself rather than go back to the shop - after getting the bike back I found the horn disconnected, a blown fuse, the fuel vent host disconnected and looped around the rear shock, the retaining tab on the voltage regulator connector was broken and the connector was not fully seated. I like the guys at the dealership but this was obviously over their heads. | ||
| Mountainstorm |
I found out that the fuse for the horn is also the fuse for the speedo. Anytime the fuse blows the speedo reverts to limp mode with no MPH or gear Output. Try replacing the fuse and connecting the horn and see what happens. | ||
| Bsdfool |
That fuse also has the brake light in circuit. The fuse has been replaced and it hasn't blown again since connecting the horn. I'm mostly concerned about damaging things when the voltage goes high. The only system ground I currently know about is at the front of the bike on the frame and it's clean and secure. Where does the v/r dump to ground? | ||
| Sparky |
The VR has two wire bundles coming out of it. One goes to the stator (3 wires) and the other (2 wires) supplies the pos and neg leads from the battery. The neg wire is the only ground for the VR. The VR metal case is isolated from all its wires. If you are getting a "System Voltage" indication on the instruments, try reading the battery voltage with a multimeter on the battery posts. If it's reading around 18 VDC, that's the first clue that the VR is malfunctioning and will soon be toast as will be the headlights if you keep riding. I'd recommend having the dealer pick up the bike and install the factory recall kit which, I think, consists of a new VR, a wire harness addition for an external relay and a ECM flash. The relay switches in or out one of the three wires from the stator on demand in order to keep the current to the VR at a safe level thus avoiding overheating the VR. | ||
| Daniii |
The recall doesn't include the VR (but probably should, mine went out after the recall wiring was done). | ||
| Sparky |
Daniii, were you getting "System Voltage" messages on the IC before the recall? If not, why was the recall wiring done if you didn't bring it in for a charging problem? | ||
| Daniii |
I did the recall along with the 600 mile service, as I got a letter. The "System Voltage" error showed up a thousand miles later (in Sturgis!). Lost a couple of headlights in the process of getting it home (to the trailer...) and to the dealer. VR replaced under warranty, but I now watch the voltage like a hawk, and tend to stay off the high beams. Voltage stays between 13.7 and 14.3 until the engine is real hot, then I've seen it drop to 12.1 at a light. | ||
| Bsdfool |
So I went for a short ride - ambient temps ~40°F. First 5 minutes of the ride IC is in then out then in then out. After a few minutes the problem goes away - no matter how I ride. Dunno, seems cold related to me, but I'm probably best off taking it back to the shop. Meh. | ||
| Petebueller |
Daniii and Bsdfool I'd check that the recall connection has gone to pin 21 of the ECM and not pin 22. The bulletin is confusing depending on which way you are looking at the connector. Facing the sockets they count from the right with 18 being on the 3rd row. Mine was wired wrong when I checked it so I took it back. It will pass all the road tests etc if it is wrong. It is only when the bike gets to 84C without much load you should see the voltage drop to 12.6 (as one winding is cut out) and then build up. Colder and or faster it will be 13.9 - 14.1 usually with occasional drops to around 13.5 | ||
| Bsdfool |
I haven't had the harness mod, but that does raise a point - I wonder if they flashed the ECM (for whatever reason) and that's causing the problem? I'll put the stock ECM in tonight and try again - Thanks, Pete. | ||
| Petebueller |
I got the flash 3 or 4 months before I got the upgrade - to fix stalling issues. I didn't seem to have any strange charging issues before I had the upgrade done but I had it done anyway. I always put it on to that display - mostly to monitor temp. |
