2000 xp limited one beep no start

[merrick]

Hello!
I have a 2000 xp limited, i got the bike with a seized engine so I don't know if the problem was always there, so I rebuilt the engine fully which is now fine, I can jump the relay and it turns over.
When I connect the lanyard it only beeps once, I have had someone try to reprogram the lanyard but he couldn't do it as the machine won't connect to the control unit.
I have done a self diagnostics test and it beeps once but there is no code for one beep! But if I remove the key it beeps twice so it does know the key is connected.
However when I try to start it it beeps once but does nothing.

I think that it is the control unit not reading the code from the key correctly, but if anyone can help with a way of testing the unit ( as key and post have been) it would really help!!
Many thanks in advance!!!

 

[Dr Honda]

Either the MPEM has gone bad... or the contact in the lanyard or post is dirty. Try cleaning the contacts with a light abrasive. I like to use either baking soda, or a scotch brite pad.

 

[merrick]

Hey thanks for reply but I've cleaned all contacts and cleaned again ad checked all wires so proberly is the mpem know if any second hand unit?
Thanks