10-10-11, 02:50 PM
Righty O! then,
First things first, check that you are getting the 5V feed to the speed sensor, unplug the white 3 pin connector that is located behind the Right Hand Side, side panel (it will be in or around the area of the fuel pump) with this unplugged switch ON the ignition and check the 'WHITE' wire on the BIKE SIDE of the harness, there should be a 5V feed there, if there is 5V there piggy back into the back of the connector (check on either side as I have had problems between connectors in the past) and turn the REAR wheel, if you get 5V-0V-5V-0V the sensor is fine and your fault lies elsewhere.
Rather than complicating things, and assuming one rather than another, carry out this check first and let me know your results. I will try and point you the right direction of what to check next as I had 3 Yam's last year with speedo faults, 2 were pretty much identical in remedy the 3rd was'nt (cheapest fix too
).
On another note I checked the fault code guide & your right about the speed sensor having it's own error code (4K) looking at the C.F.D all 4 items that are enabled with self diagnosis share one common wire which is Black/Blue (B/L), this is unrelated but I personally have never seen this error code, even if you unplug the speed sensor I dont think it shows up like when the other components (EXUP, TPS & Tip over Switch) are unplugged ?
Keep me posted, chitsu.
First things first, check that you are getting the 5V feed to the speed sensor, unplug the white 3 pin connector that is located behind the Right Hand Side, side panel (it will be in or around the area of the fuel pump) with this unplugged switch ON the ignition and check the 'WHITE' wire on the BIKE SIDE of the harness, there should be a 5V feed there, if there is 5V there piggy back into the back of the connector (check on either side as I have had problems between connectors in the past) and turn the REAR wheel, if you get 5V-0V-5V-0V the sensor is fine and your fault lies elsewhere.
Rather than complicating things, and assuming one rather than another, carry out this check first and let me know your results. I will try and point you the right direction of what to check next as I had 3 Yam's last year with speedo faults, 2 were pretty much identical in remedy the 3rd was'nt (cheapest fix too
).On another note I checked the fault code guide & your right about the speed sensor having it's own error code (4K) looking at the C.F.D all 4 items that are enabled with self diagnosis share one common wire which is Black/Blue (B/L), this is unrelated but I personally have never seen this error code, even if you unplug the speed sensor I dont think it shows up like when the other components (EXUP, TPS & Tip over Switch) are unplugged ?
Keep me posted, chitsu.