CLS 550 (219.372) V8-5.5L (273.960) (2007)
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Central Control Module: Description and Operation
GF54.21-P-6030TX Rear Sam Control Unit With Fuse and Relay Module, Component Description
GF54.21-P-6030TX Rear SAM control unit with fuse and relay module, component description
Component Identification
Location
The rear SAM control unit is located at the rear left of the luggage compartment on the wheelhouse.
General
The rear SAM control unit is connected to the Controller Area Network bus class B (interior) (CAN-B) to allow data to be exchanged.
Task
The rear SAM control unit reads in the following components, sensors, pick-ups and switches, actuates their function, switch and controls illumination
(if necessary) and actuates the following relays and consumers by means of semiconductor switches.
Controlling
^
Heated rear window
^
Exterior lighting at rear of the vehicle
^
Turn signal functions
^
Fuel gauge
^
Emergency opening of doors (in the event of a crash)
^
Trunk illumination
^
Rear head restraint lowering mechanism (RHR [KAF])
^
Trunk emergency release, with code (494) USA version
^
Roller blind for rear window, with code (540) Electric rear window roller blind
^
Anti-theft alarm system (ATA [EDW]), with code (551) Antitheft alarm system (ATA [EDW])
Discrete bidirectional interface to following components
^
Left antenna amplifier module (A2/64)
On vehicles with code (551) Anti-theft alarm system (ATA [EDW]):
^
Alarm signal horn with additional battery (H3/1)
^
ATA [EDW] inclination sensor (1333)
As of 1.7.06, the ATA [EDW] inclination sensor will no longer be fitted on vehicles with code (494) USA version or with code (498) Japan version.
Read-in of following sensor
^
Integrated crash sensor
Read-in of following sensors
^
Fuel level sensor, left half of tank (B4/1)
^
Fuel level sensor, right half of tank (B4/2)
Reading in the following switches:
^
Stop light switch (S9/1)
^
Left front door contact switch (S17/3)
^
Right front door contact switch (S17/4)
^
Left rear door contact switch (S17/5)
^
right rear door contact switch (S17/6)
^
Lock pawl rotary tumbler switch (S88/4)
