GF30.20-P-2100KE Component Description For the CC [TPM] Switch

GF30.20-P-2100KE Component Description For The CC [TPM] Switch
- ENGINE 271.921 /944 /946 /948 up to Model Year 8
- ENGINE 271.940 in MODEL 203 up to Model Year 8
- ENGINE 271.940 in MODEL 209.342 /442
- ENGINE 271.941 /955 /956





Location
S40/4 CC pushbutton switch (on models 171, 209, 211)
S40/4 CC pushbutton switch with variable speed limitation (on model 203)
S40/4s1 Resume from memory
S40/4s2 Decelerate and set
S40/4s3 Accelerate and set
S40/4s4 Off
S40/4s6 Variable speed (except (United States of America))
S40/4v1 Yellow LED, variable speed limitation (except (United States of America))

The CC [TPM] switch is located at the top left of the steering column module (N80).

Task
The CC pushbutton switch switches the cruise control functions, Distronic (with Distronic) and variable speed limitation (except (United States of America)) on and off.

Function
When the cruise control pushbutton switch is operated, two switching contacts are always activated simultaneously. The actual input takes place by closing the switching contacts (storing the speed). The safety contact must close simultaneously so that the input is accepted.
The shift signals from the CC pushbutton switch are detected by the steering column module and transmitted to the CAN data bus.

With Distronic in model 211
The Distronic control unit (N63/1 up to 06/2004 and A89n1 as of 07/2004) evaluates shift signals for operation of Distronic and sends corresponding signals for speed limitation to the ME control unit (N3/10).

Up to 05/2005
The ME control unit evaluates shift signals for operation of cruise control and variable speed limitation (except (United States of America)).

From 06/2005
The ESP control unit and the ESP, PML and brake assist control units (N47-5) evaluate the shift signals for operation of cruise control and variable speed limitation (except (United States of America)) and send corresponding signals for the purpose of speed limitation to the ME control unit.