How about me? How i solve this problem.
I will tell you, but you have your own risk if you follow me and don't blame me
My way:
1. Disassemble the camera. Put off all screw at outside the camera case.
2. Put off the connector, flexible wire, in the small board inside the camera. Until you get the lens.
3. Clean your lens. You can use contact cleaner lubricant for service to spray at motor.
4. After that, clean up all of the lens. It's purpose to prevent short electricity.
5. Assemble your camera again.
6. Try it! Until I finish this step
If you don't finish until this step. Maybe your bike is broken so worst. Change the motor and its connection with the good one. Then assemble again. I hope you can solve your problem.
Thanks.