Control unit and electric motor (Freelander 2)

Pos.	Spare part number	Name
1	-	Electric motor
2	-	Control unit

The control unit, which is integrated with the electric motor, is mounted behind the headliner at the rear of the sunroof panel. The control unit uses input signals from the CJB and the switch to control the operation of the electric motor.

The end of the electric motor rotor is designed as a worm gear, which drives a pinion attached to the end of the electric motor. The pinion is engaged with twisted cables in the frame of the sunroof panel, which together with the pinion form an analogue of a rack and pinion.

The control unit includes a Hall sensor, which is used to count the revolutions made by the electric motor rotor. By counting the revolutions, the control unit can accurately determine when the glass panel has reached a fully open, closed or tilted position. To do this, the control unit compares the rotor rotation value with the values stored in the control unit's memory. These values are stored in the control unit's memory when the initialization process is performed.

The control unit also monitors the temperature of the electric motor and temporarily suspends its operation in case of possible overheating. The temperature protection function has 2 levels of operation:



Details can be found on the website www.LRman.ru

• Level 1 - The control unit only allows the sunroof panel to be closed.
• Level 2 - All functions are temporarily suspended except the anti-pinch function.