5 Series E60 M5 (S85) SAL
speed or torque).
The SMG control unit reports the current operating status of the transmission back to the DME.
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CAS: Car Access System
The CAS enables the starter only if a release signal is received from the SMG control unit (starter inhibitor).
The following conditions must be satisfied for the start to be enabled:
•
The gear lever must be in position "N".
"N" must be on the instrument cluster LCD display. (This also keeps the transmission into "N").
•
The SMG control unit enables the start when the brake pedal is depressed. The clutch is opened.
The CAS also provides input signals relating to terminal status (e.g. terminal 15 ON).
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SGM or KGM: Safety and gateway module or body gateway module
From 09/2005, the vehicle electrical system has been modified. The KGM supersedes the SGM.
> SGM up to 09/2005
The SGM is the gateway (= data interface) between:
•
PT-CAN
•
K-CAN
•
Byteflight
The diagnosis wire is connected to the SGM.
> KGM from 09/2005
The KGM is the gateway (= data interface) between:
•
PT-CAN
•
K-CAN
The diagnosis wire is connected to the KGM.
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LM: Light module
The reversing light is switched on upon the basis of messages from the SMG control unit to the light module.
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Brake light switch
The brake-light switch signal is used for the following operations:
•
To release the shift lever lock (shift-lock)
•
To detect a brake application
•
To shift to "N" when the engine is shut-down
•
For pulling away on a slope
Signal path: Brake light switch -> DME control unit -> PT-CAN -> SMG control unit
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FPM: Accelerator pedal module
The signal from the accelerator pedal module (driver's command) is needed to permanently monitor the vehicle's
operating conditions (evaluation via DME).
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Parking brake warning switch
The SMG control unit uses the parking brake warning switch to detect whether the parking brake is applied or
released. The signal is used for activating the clutch. The signal is transmitted by a direct wire from the parking
brake warning switch to the SMG control unit.
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RLS: Rain-light sensor
The rain-light sensor is used for automatically adjusting the brightness of the gear indicator lighting in the gear
lever knob to the background lighting.
SBT Sequential M transmission E60 M5, E63 M6
BMW AG - TIS
23.02.2013 19:41
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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