5 Series E60 M5 (S85) SAL
The control units networked for the purposes of AFS are as follows:
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AL: Active Steering control unit
The AL control unit computes the nominal values for the electric servomotor of the planetary gearbox with
override function.
[more ...]
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SZL: Steering Column Switch
The Steering Column Switch provides the steering angle.
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SGM: Safety and gateway module
> E60, E61, E63, E64 up to 09/2005
The safety and gateway module (SGM) drives the ECO valve in the power-steering pump and the Servotronic
valve.
Moreover, the SGM forms the interface between the PT-CAN and the K-CAN (signals for instrument cluster).
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KGM: Body gateway module
> E60, E61, E63, E64 from 09/2005
The body gateway module (KGM) forms the interface between the PT-CAN and the K-CAN (signals for
instrument cluster).
With option 216 "Servotronic", the KGM actuates the Servotronic valve.
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JBE: Junction box electronics
> E70, E81, E87, E90, E91, E92, E93
The junction box electronics (JBE) forms the interface between the PT-CAN and the K-CAN (signals for
instrument cluster).
Moreover, the AL control unit receives its power supply from the distributor in the junction box.
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DSC: Dynamic Stability Control
The DSC control unit and the AL control unit are interconnected by the F-CAN (chassis CAN). The signals
supplied by the DSC control unit include the road speed signal.
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DME or DDE: digital engine electronics or digital diesel electronics
The engine control sends the signal indicating that the engine is running to the AL control unit via the PT-CAN
bus. The AL control unit notifies the engine control of the approximate drive torque of the power-steering pump.
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CAS: Car access system
The vehicle is authenticated by the AL control unit and the CAS control unit via the K-CAN / PT-CAN (vehicle
identification numbers compared).
Moreover, the CAS control unit transmits the wake-up signal for the PT-CAN.
The following actuators are actuated by the Active Steering:
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Planetary gearbox with override function and electric servomotor
The planetary gearbox with override function uses the electric servomotor to generate the resulting cumulative
steering angle at the front wheels.
[more ...]
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Hydraulic steering with Servotronic valve
The conventional hydraulic steering provides the power-steering assistance.
"Servotronic" (= speed-dependent power-assisted steering) is part of the Active Steering option.
[more ...]
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ECO valve in the power-steering pump
A vehicle fitted with the "Active Steering" option has a controlled-output power-steering pump.
SBT Active Steering E60, E61, E63, E64, E70, E81, E87, E90, E91, E92, E93
BMW AG - TIS
23.02.2013 19:50
Issue status (12/2007) Valid only until next DVD is issued
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