Motorcycle Repair Questions? Ask a Mechanic ASAP
has the battery been verified as well?, how many volts is there at the starter cable when the starter button is being pressed?
Tonight it will not change gears at all (except with the wrench of course). The gear indicator now seems to flash all the time.
Please pardon my ignorance. But we are talking about my 4-wheeler, not a motorcycle - right?
I assume you mean to trace the wire harness from the electric shifter buttons on the handlbar down under the body of the machine. There I encounter a row of plastic cylinders which I assume are just connectors (or connectors with fuses in them. Of course I don't really know since I have no idea how to get them apart, and most have more than two wires.) Discerning which wire goes where is very difficult, nor does anything at this point resemble any kind of a motor.
Some wires seem to go down to a little cylindrical object (about 1.5"x3") mounted on the front of the motor. I would guess that this is what you are talking about when you say "shift motor." But I have already had that removed, thoroughly gone over, and it spins just fine.
So, next I am guessing you suspect "the ecm," but I have no idea what that is, where to find it, or how to test it (or of course any of its connections). Can you render any further help?
yes, i am referring to your 2006 TRX350FE rancher. that small cylindrical motor on the front of the engine is the shift control motor. if this was tested with a battery, and it spins over fine, then this may not be the issue. the ECM is the engine control module. this is an electrical component that is responsible for making the electric shift system operate. this component is located under the rear fender, on the right side, just above the wheel well. it is a bit difficult to get to. there is two components back there. one that has cooling fins on it, and a larger electrical component that has a very large connector, and a smaller connector. the one with the two connectors is the ECM.
with this code either the shift motor or the ECM is bad. unfortunately there is no way of testing the ECM. typically in a diagnosis, all components are to be tested around the ECM to determine if it is the fault. if the control motor was tested ok then the ECM is most likely to be the fault. keep in mind though this is all subject to the condition of connections at the control motor or the ECM, so always inspect the connections at these areas as well.
Sorry to be so long getting back to you, but I still haven't had the chance to check out the connections. It will still probably be a week or so before I can get to it. Can you tell me the order in which the circuit runs? From the battery to the switch to the shift control motor to the ecm???? in what order?
In the meantime, my son-in-law, asked if the angle sensor might not be a problem? Got any insight to offer on that question?
the angle sensor would show a difference code. they are notorious for going bad, but this code doesnt pertain to that issue.
as far as power flow on this. the ECM is the hub of all function to this. battery power goes to the ECM. as does the wires from the shift buttons, and the control motor wires. they all go to the ECM. when a button is pressed on the shift buttons, it sends signal to the ECM, the ECM determines whether up or down was pressed, and applies power to the control motor accordingly. however there may be one other place of interest to this. the shift control motor turns a small set of reduction gears. these can be inspected by unbolting the cover to them from the front of the motor as well. this small set of gears is what applies the shift motor drive to the shift shaft. if one of these small gears breaks a tooth or something, then it can possibly cause this as well. but as far as your code goes it has to do with either the shift control motor, its wiring or the ECM.
I want to try to get a look at this this weekend. We have a family reunion too, so I am not sure if there will be time or not.
I'll get back to you...