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Mercedes Benz Workshop Service and Repair Manuals

GF54.21-P-7010GZ Front Sam Control Unit, Component Description|Page 8569 > < GF54.21-P-7010GZ Front Sam Control Unit, Component Description|Page 8567
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Relay Box: Description and Operation
GF54.21-P-7030GZ Rear Sam Control Unit, Component Description

GF54.21-P-7030GZ Rear SAM control unit, component description

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164 up to model year 8

Component Identification

Location

The rear SAM control unit is located in the right rear luggage compartment on the wheelhouse.

General

The rear SAM control unit serves to exchange data and is connected to the Controller Area Network bus Class B (interior) (CAN-B).

Task

The rear SAM control unit reads in the following components, sensors, pick-ups and switches, and actuates the function and switch and controls
illumination and then actuates the following relay and consumers by way of semiconductor switches.

Controlling

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Heated rear window (R1)

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Rear exterior lights

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Turn signal functions

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Right rear door central locking system

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Central locking, rear-end door

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Rear-end door power closing

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Trunk illumination

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Trailer recognition and trailer illumination

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Rear wiper Left and right rear door illumination

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Left and right rear vent window

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Anti-theft alarm system [EDW]
(for anti-theft alarm system (ATA [EDW]), code 551)

Reading in and outputting the following signals:

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Circuit 30

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Circuit 31

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Circuit 15

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Circuit 54

Reading in following switches, pickups and sensors:

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Rear door locking unit (A72)

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Fuel level sensor, left half of tank (B4/1)

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Fuel level sensor, right half of tank (B4/2)

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Left vent window obstruction sensor strip (B51/5)

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Right vent window obstruction sensor strip (B51/6)

GF54.21-P-7010GZ Front Sam Control Unit, Component Description|Page 8569 > < GF54.21-P-7010GZ Front Sam Control Unit, Component Description|Page 8567