Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
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Please observe the revision notes compared to 09/18/2015 ! Only print out complete sections of the current version!
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9.8 Parameterizable special module (PSM)
9 Electrical system
9.8
Parameterizable special module (PSM)
The parameterizable special module (PSM) was devel-
oped as an interface between the vehicle and body
solutions, in order to allow upfitters to access individual
CAN bus data. This PSM provides a clearly defined,
diagnostics-compatible and EMC-tested interface
between the vehicle and the body.
The PSM, available under code ED5, can read the mes-
sages on the CAN bus and, for example, make them
available as switching signals at the binary outputs
provided for this purpose or as PWM (pulse width
modulation) signals, and also relay them via a specified
ABH CAN (
Page 121). The electronics installed by
the upfitter then have access to the necessary signals.
i
Additional information
For further information on the topic of CAN bus
systems, see 9.4.3 “CAN bus and networking”
(
Installation position of the PSM in the left seat
base
1
Parameterizable special module (PSM)
Arrow Direction of travel
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Note
The wiring on the vehicle must not be tampered
with, as this would lead to fault messages from the
other control units on the CAN bus.
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Note
When a standard coding is written, all previous
parameterization is erased. We recommend backing
up data beforehand.
