Sliding/pop-up roof desynchronization, function · gf7720p3003mx · Mercedes-Benz WIS

GF77.20-P-3003MX

Sliding/pop-up roof desynchronization, function

15.8.02

MODEL 240 with CODE (414A) Electric glass sliding/pop-up roof

Desynchronized state

The position of the sliding/pop-up roof [SHD] is not known. It can be moved in two directions, but only by using the "open sliding roof" and "open pop-up roof" buttons of the roof system switch (N70s1). Closing is no longer possible using the roof system switch (N70s1) because it cannot definitely identify the direction of motor rotation. To indicate that it is desynchronized and to avoid strain on the mechanical limit stop in the "sliding roof open" position, the roof is actuated in the "open sliding roof" direction for approx. 0.3 sec, after which the roof system switch (N70s1) must again be pressed in the "open sliding roof" direction.

Desynchronization

Desynchronization occurs in the following cases:

1. Circuit 30 off/on

2. The sliding/pop-up roof exceeds the defined travel area by 5 motor rotations

3. One of the two Hall sensor signals is absent for t > 320 ms

4. Both Hall sensor signals are absent for t > 320 ms even after the roof is reversed

5. The defined Hall sensor signal sequence is faulty

 When desynchronized, the sliding/pop-up roof function is restricted. It is only possible to open the sliding/pop-up roof according to the described conditions

	Synchronizing sliding/pop-up roof, function		GF77.20-P-3002MX
	Sliding/pop-up roof lock-up recognition, function		GF77.20-P-3000MX
	Sliding/pop-up roof position measuring, function		GF77.20-P-3001MX
	Sliding/pop-up roof obstruction sensor, function		GF77.20-P-3004MX
	Sliding/pop-up roof motor, location/purpose/function		GF77.20-P-4105MX
	Overhead control panel control module, location/purpose		GF82.20-P-4120MX

Referenced documents

gf7720p3000mx Sliding/pop-up roof lock-up recognition, function
gf7720p3001mx Sliding/pop-up roof position measuring, function
gf7720p3002mx Synchronizing sliding/pop-up roof, function
gf7720p3004mx Sliding/pop-up roof obstruction sensor, function
gf7720p4105mx Sliding/pop-up roof motor, location/purpose/function
gf8220p4120mx Overhead control panel control module, location/task