Engine - Drivetrain

Hi AKATV Would you please briefly describe how to reporogram odometer which lost the code? I have 3 x TRX500FA 2001. In one of them odometer seem to lost the code. It powers up but display doesn't show anything ( no water damage, already cleaned, pcb/lcd terminals and swapped between machines). Is there any way to use i.e Jtag and read code from working odometer and save it to the faulty one? I have access to flash programmer also. Can you please briefly describe the procedure or point me to any url explaining it ? Regards Chris

@jeepwm69 thanks for the warm welcome, I finally decided to join a couple of the Honda atv forums and Facebook groups not just for help on this issue, but I’m hoping I can also help others and share some of my experience/knowledge as well from working at a Honda dealer that almost solely repairs Honda atvs and sxs. We are a small rural farm town so we see some crazy stuff from our local farmers and ranchers. Me and my coworker have a joke that they are Honda’s unpaid volunteer R&D department. Anyways enough of my blabbering. I did send a email to Brian so thanks for the tip on that. Also I read through your old posts and I  think you may be onto something with the shift motor wiring. That is the same symptom I’m having where I am only hearing the shift motor running one direction and not the other. I talked to Honda Techline today and shared my testing results with him. He said he wants me to go back and test actual resistance measurements for all three wires going from the angle sensor plug back to the ecu. Makes complete sense since I orginally did all my continuity tests with the meter on audible beep sounds (since I was working after hours by myself and my arms couldn’t reach both ends and see the meter screen at the same time).  So even though all my continuity checks tested good indicating I don’t have any broken wires I still need to go back and test ohm values to check for pinched or corroded wires. So I plan on staying late after work tommorow to mess with it some more. I looked up a new wire harness from Honda and looks like they aren’t discontinued yet and my employee cost would be about $260 instead of $465 so if it ends up being a wiring issue and I can’t find it or repair it easily I may just end up replacing the harness but ideally I’d solder it or splice in a new wire.

Hi @MarkRawlinson you have to put that wire back on the kill switch --- unplug the control motor to see if the heat on the ECM goes away

My mechanic cut the wire just before the cdi box. Not sure if that’s good or bad.