gf7720p3000rt

Tilting/sliding roof lock-up recognition, function

Type gf · topic 77.20 · version 0102 · 2008-04-08

Applies to: MODEL 251.1 /0 with CODE (414) Power glass tilting/sliding roof up to Model Year 8

Where it sits

Function group 3 Body › 77 Sliding roof, soft top, top attachments › 77.20 Electric sliding roof — Series 251 (models 0**, 1**)

GF77.20-P-3000RT

Tilting/sliding roof lock-up recognition, function

16.6.05

MODEL 251.1 /0
with CODE (414) Power glass tilting/sliding roof
up to Model Year 8

Function

The overhead control panel control unit (N70) receives the voltage pulses from Hall sensor 1, SRM12m1M12b1 and Hall sensor 2, SR (M12b2) located on the SR motor. They are counted and evaluated for position measurement.

When the Hall sensor pulses are not received for longer than

320 ms, even though the SR motor is activated, the SR motor is switched off. The tilting/sliding roof reverses direction in the case of lock-up during automatic closing.

Moreover, a software temperature protection switch in the overhead control panel control unit protects against overload.In the event of failure of the Hall sensors, the tilting/sliding roof can only be closed in increments of 320 ms with the roof switch (N70s1) or the emergency crank.

Overhead control panel control unit, component description

GF82.20-P-5216RT

Referenced documents