Priport DX4545 error E-43

Hello everybody,
I have a problem with a Ricoh dx4545 duplicator. Everything was fine until I got this error code: E-43. I have downloaded the service manual and it says that this error has something to do with the printer pressure sensor or the printer pressure motor. I have already checked the sensor and it works fine but I don't know how to test the motor as I don't have the wiring schema between the motor and the MPU (mainboard). I would be very grateful if some experts here would help me with the wiring manual.

Than you all.