GL 550 (164.886) V8-5.5L (273.963) (2008)
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Central Control Module: Description and Operation
GF54.21-P-4170GZ Central Gateway Control Unit, Component Description
Location
The central gateway control unit (N93) is located in the driver footwell on the left in the direction of travel.
Tasks
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Gateway between the CAN class B and CAN class C as well as CAN class D
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Global variant coding (with networked control units the central gateway transmits global information such as model series and national version to
the CAN-B control unit, CAN-C control unit and CAN-D control unit)
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Router between CAN-class B and diagnostic CAN
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Router between CAN class C and diagnostic CAN
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Diagnosis between CAN class B and diagnostic CAN
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Diagnosis between CAN-class C and diagnostic CAN
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Data container
In the vehicles there are 3 CAN buses which are connected by the central gateway control unit:
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Diagnostic CAN with a transfer rate of 500 kbit/s
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CAN-Class B with a transfer rate of 83.3 kbit/s
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CAN-Class C with a transfer rate of 500 kbit/s