3 Series E91 330d (M57T2) TOUR
The DSC unit incorporates a brake-pressure sensor. This brake pressure sensor registers the braking pressure
applied by the brake pedal and the brake booster.
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2 brake pad wear sensors
The brake pad wear sensors (front left and rear right in the inner brake pads) provide additional information
about the thickness of the brake pads. This additional information (2 reference points) is compared to the value
calculated by the DSC.
A critical brake lining thickness will be indicated in the instrument cluster by the "Next Service" indicator
(Condition Based Service, CBS) and by the general brake warning lamp lighting up red.
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DTC button
The DTC button has the letters "DTC". The DTC button can be used to select 3 switch states:
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DTC button not pressed after terminal change: DSC in operation (default)
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DTC button briefly pressed: DTC in operation (DTC indicator light lights up in instrument cluster)
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DTC button pressed and held: DSC and ASC deactivated, ABS and ABD-X on all wheel drive vehicles
remain active (indicator lamp in instrument cluster lights up permanently)
> E60, E61, E63, E64
The DTC button is in the centre console switch cluster (SZM) The signal is transmitted on the K-CAN and via a
separate wire. The signal on the separate wire is decisive.
> E83
The DTC button is in the centre console switch cluster (SZM) The signal is transmitted via a separate wire.
> E90, E91, E92
The DTC button is connected to the junction box electronics (JBE). The JBE transmits a bus signal.
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Brake-fluid-level switch
Insufficient brake fluid is detected and a signal sent to the DSC control unit.
If there is insufficient brake fluid, this will be indicated in the instrument cluster by the general brake warning
lamp lighting up red.
The DSC control unit also communicates with the following control units:
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DME or DDE: Digital engine electronics or digital diesel electronics
The DME or DDE, as applicable, controls engine adaptation (for example, reduction in engine output to prevent
spin at the driven wheels). The DME or DDE also receives the converted wheel speed signal from the rear right
wheel. This signal is used to check the plausibility of engine misfires (DME). The signal on the PT-CAN is
redundant.
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RLS: Rain-light sensor
The signal from the rain-light sensor is used to brake the brake discs dry on a wet road surface. In addition, it is
important for a wiper stage to be switched on.
> E60, E61, E63, E64
The rain-light sensor supplies the signal on the CAN bus.
> E83
The rain-light sensor supplies the signal on the K-bus.
> E90, E91, E92
The rain-light sensor is connected to the roof control panel (FZD) via the LIN bus.
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CAS and M-ASK/CCC: Car Access System and multi-audio system controller/Car Communication Computer
SBT Dynamic Stability Control 8Plus E60, E61, E63, E64, E83, E90, E91, E92
BMW AG - TIS
18.02.2013 20:34
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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