Hi anyone,
I have had a fault code 12 come up on my dash, a mechanic said it could be a corroded plug giving an incorrect reading. I have found one under the seat, does anyone know of another or another reason for this fault other then a faulty sensor or crank in the wrong position. The bike was working fine until I went start it for the third time that day.
Hi anyone,
I have had a fault code 12 come up on my dash, a mechanic said it could be a corroded plug giving an incorrect reading. I have found one under the seat, does anyone know of another or another reason for this fault other then a faulty sensor or crank in the wrong position. The bike was working fine until I went start it for the third time that day.
It should be a faulty crank position sensor, but it's misleading because I have never seen it happen. If you want to be sure, just check :
Unplug the big ECU connector
Measure resistance between pin 3 on the first row (from the right) and pin 7 on the second row (from the right)
Target value : 300 ohm +/-20%
Most common causes :
Faulty relay
Faulty starter motor (loose magnet(s) and/or worn brushes)
If it's the starter motor you may want to salvage it as they are pricey
Edit : you may also want to try something that some other people did : put the bike in 2nd gear and push it (the best you can). It sort of "resets" things. This trick obviously doesn't work if you have a real problem (relay or starter motor).
Jules, you’re the new Otto (old joke...)
Jules, you’re the new Otto (old joke...)
I wouldn't compare myself to Otto ...
Thanks for the reply.
I have taken out the starter motor and connected it briefly to the battery and it still didn't turn so it looks like I am going to have to sort this out first. After taking it apart it all looks fine, no funny smells, the brushes are worn but it all looks un damaged.
If I were you I'd check the magnets too. Some might come off as they are generally not very well glued.
Get some epoxy glue and glue back the ones that come off. Be careful not to damage the magnets when you try to pull them off. Glue back one magnet at a time and of course put them back exactly in the same position ...
Been there done it in the end new starter
ok, I have fitted the new starter and still no joy, I can run the bike by shorting the starter solenoid. The crankshaft sensor has 294ohnms, so that looks ok.
What's next, anyone got any ideas?
Thanks Jules, you were right, the solenoid was clicking but not making the connection to send the supply to the starter motor. Speaking to a local mechanic, he thinks the starter motor probably burn't out due to the relay fault. If I could find out how to post a picture I would include the contacts inside the relay, one side was brass coloured the other showing signs of heat damage. I went out on the MT after fitting the new one, I love this bike, I don't think i'll ever get another (unless it's an MT01), mine has a full akrapovic system which really adds to the ride. What a beast!!
Steve
Steve,
I would we surprised if you had a burnt out starter motor. Normally when the relay fails, the damage stops there. But maybe something else happened ?
Glad to see you got it up and running again.
