Mercedes-Benz OM 471 Introduction Into Service Manual page 109

System components
GF54.21>W>5005H
MODEL 963, 964
Location
A22 Parameterizable special module (PSM) control unit
The parameterizable special module (PSM) (A22) control unit is
located on the passenger side in the electronics compartment.
Task
The parameterizable special module control unit (PSM) (A22) is
integrated in the overall network on the vehicle side via the frame
CAN (CAN 3). The trailer CAN (PSM) (CAN 7) and the body CAN
(PSM) (CAN 8) serve as external interfaces.
The parameterizable special module control unit (PSM) (A22)
allows for the implementation of complex controls and functions.
106
Parameterizable special module (PSM) control unit, component description
– This printout will not be recorded by the update service. Status: 09 / 2011 –
Full access to data from the entire vehicle CAN enables multiple
applications to be carried out with a minimum of additional
hardware components. Several functions are performed entirely
without additional parts. They only need to be parameterized.
42 equations are available at the factory as preinstalled
applications. These can be individually adapted
(parameterization) to their respective use in the vehicle.
29.6.11
W54.21>1432>11