New Generation N62 Engine Chapter 4 P.12
Course Contents/Background Material
© BMW AG, Service Training
Functional description
- General information
There is no direct connection to the on-board diagnostics
system (OBD) diagnostic connector. The DME is connected to
the ZGM (central gateway module) via the PT CAN bus. The
OBD diagnostic connector is connected to the ZGM.
The fuel pump relay is controlled by the digital engine-
management system via the ZGM and ISIS (integrated safety
and information system) using the airbag control unit in the
SBSR (right-hand side satellite B-pillar).
This enables the fuel pump to be switched off in the event of an
accident.
There is no direct control for the air conditioning system
compressor relay. The non-connected air conditioning system
compressor is now controlled by the air conditioning system
control unit.
The DME signals required for the refrigerant compressor control
system are received in the air conditioning system control
electronics via the PT CAN bus and the ZGM.
The FGR (cruise control) is integrated in the DME.
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