modding a KU-65 controler to work with a throttle, help!! =S

kexet

Just Joined
Dec 20, 2015
2
0
39
Sweden
Hello. I bought an ebike with a broken PAS sensor in Sweden and now im trying to replace it with a throttle. which was easier said then done.

The problem is that when I start up the system and turn the throttle nothing happens. but if i use the walk assist (hold the + button and it runs for 6km/h) and turn the throttle within 2 seconds everything works. I can go to full/mid speed. if i then let go of the throttle for more then 2 seconds it wont give more gas and i have to hit walk assist again to get the throttle back in action. If I connect calibr action (one white wire from GND to XX) the motors starts with full speed as son as I press power on the display and after a while the 2 second problem is back after that.

I have tested the throttle and the motor. they work with another controller.

i cant connect the throttle to the PAS connector. Throttle and PAS dosent work the same. if i connect all the three wires on the pas connector and then separate them, the bike will run for 7 seconds. throttle never gets disconnected. The wires are always giving a signal. i think..

There was a "PAS start" version of the KU63, which had a jumper wire on the back of the pcb. If you cut the jumper, it reverted to normal throttle operation. Yours doesn't have the jumper, so I guess you're pollacksed.
.
I havent find that jumper yet. but im starting to think that its build in and I have to cut big brouther out of my ebike.

is there a way to fix this? Do i have to rewire anything else?

The controller might be a KU-65 and the bike is called off course
 

Attachments

Last edited: