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

Model 222 with code 965 (Taxi/rental car - electrical pre-installation) except code Z07 (B7 armoring on special protection version)

Fig 1: Special Vehicle Multifunction Control Unit (SVMCU (MSS)) Components Location - Model 222 With Code 965 Except Code Z07

Courtesy of MERCEDES-BENZ USA

Location

The multifunction control unit is located below the right cover in the trunk.

Task

The multifunction control unit is responsible for the following tasks:

Reading in of sensors and signals

The input factors are read in via the following connections:

Direct line

The signals from the following components are read via direct lines:

Emergency alarm system "Delete" button (S62/5) (with code (934) Taxi emergency alarm system)
Emergency alarm system "Trigger" button (S62/6) (with code (934) Taxi emergency alarm system)
Two-way radio cut-in switch (S93/2) (with code (938) Preinstallation for hands-free two-way radio)

Interior CAN

The signals are read in by the multifunction control unit over the interior CAN.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Multifunction CAN

The signals are read in by the multifunction control unit over the multifunction CAN.

The functions that use these signals are described in the individual 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 relevant components are then actuated.

Actuation of components

The actuation of the components takes place via the following connections:

Direct line

The following components are actuated via a direct line:

Two-way radio (A49) (accessories) or radio data transceiver (A49/5) (accessories)

Interior CAN

The signals are sent by the multifunction control unit over the interior CAN.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Multifunction CAN

The signals are sent by the multifunction control unit over the multifunction CAN.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

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