Special Vehicle Multifunction Control Unit (SVMCU [MSS]), Component Description - GF54.21-P-4010CE

MODEL 204.0/2 with CODE (965) Electrical preinstallation, rental vehicles as of model year 2009/CY 08 

Shown on model 204.0 

Location 

The special-purpose vehicle multifunction control unit is located in the trunk in front of the spare tire well.

Task 

The special-purpose vehicle multifunction control unit has the following tasks:

• Reading in of sensors, pickups and signals 
• Evaluation of input factors 
• Actuation of components 

Scan components, sensors, transmitters and signals 

The input factors are read in via the following connections:

• Direct line 
• Interior CAN (CAN B) 

Direct line 

The signals from the following components are read via a direct line:

• Two-way radio (A49) (accessories)
• Radio data transmission two-way radio (A49/5) (accessories)
• "Cancel" button on taxi emergency alarm system (S62/5)

  (with code (934) Taxi emergency alarm system)

• "Actuate" button on taxi emergency alarm system (S62/6)

  (with code (934) Taxi emergency alarm system)

• Two-way radio link up switch (S93/2)

  (with code (938) Preinstallation for handsfree two-way radio)

Interior CAN 

The signals are read in by the special-purpose vehicle multifunction control unit via the interior CAN. The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Evaluation of input factors 

The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.

Actuation of components 

Actuation of the components takes place via the following connections:

• Direct line 
• Interior CAN 

Direct line 

The following components are actuated via a direct line:

• Two-way radio (accessories)
• Radio data transmission two-way radio (accessories)
• Taximeter (A50)

  (with code (336) Preinstallation for taximeter installation)

• Mirror taximeter (A50/1)

  (with code (337) Taximeter integrated into rearview mirror)

• Roof sign lamp (E14/4)

  (with code (342) Roof sign lamp connection for taxi)

Interior CAN 

The signals are sent by the special-purpose vehicle multifunction control unit via the interior CAN.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Wiring diagram, special vehicle multifunction control unit (SVMCU [MSS])

PE54.21-P-2105-97FAA