BMW 7 Series: System Overview
The system circuit diagram for the outside temperature is displayed below.
The diagram is structured in such a way that only the control units and control elements directly involved in the instrument cluster are shown.
The instrument cluster receives a large number of different bus signals that provide information (speed, CC messages, etc.) for the various displays and indicators. These bus signals are requests to the instrument cluster and are therefore not listed in this product information.
The only directly connected component that can be seen in the system circuit diagram is the outdoor temperature sensor.
This input signal is read directly in the instrument cluster and made available from here to all other bus users.
The outdoor temperature sensor wiring "passes through" the junction box and is processed directly by the instrument cluster.
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Fig. 6: System Circuit Diagram For Outside Temperature
OUTSIDE TEMPERATURE SYSTEM REFERENCE CHART
- Central Gateway Module (ZGM)
- Car Access System (CAS)
- Instrument Cluster
- Outside Temperature Sensor
- Junction Box
- Front Distribution Box
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Principles Of Operation
Instrument Cluster
The instrument cluster receives information on the wiring harness in the form
of analog and digital electrical
signals. These signals are processed and displayed in the instrument
Central Information Display
Main Menu
The display in the main menu consists of the following menu items:
CD/Multimedia
Radio
Telephone
Navigation
Contacts
Vehicle Info
Settings.
Fig. 16: Display Telephone
In addition t
Vehicle Info Menu
BMW ASSIST Menu
The "Vehicle Info" menu contains all the information regarding the condition,
service intervals, the on-board
computer and the journey computer of the vehicle.
In addition, this menu
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Electronic Damping Force Adjustment
REMOVING AND INSTALLING/REPLACING VERTICAL DYNAMICS MANAGEMENT
CONTROL UNIT (VDM WITH DYNAMIC DRIVE)
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC
DISCHARGE (ESD PROTECTION).
Necessary preliminary tasks
Remove ignition key
Disconnect BATTERY NEGATIVE LEAD
Remove SIDE
Automatic climate control- Air conditioning
Concept
The air in the car's interior will be cooled and dehumidified
and, depending on the temperature
setting, warmed again.
The car's interior can only be cooled with the
drive-ready state switched on.
Switching on/off
Press the button.
The LED is illuminated with air conditioning
switched on.
