5 Series E61 523i (N52) TOUR
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Lateral acceleration
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FRM: Footwell module
> E70, E71
The footwell module evaluates the status of the Hall sensors in the door contacts. The footwell module transmits
a message on the K-CAN to the CAS control unit (CAS: Car Access System).
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HUD: Head-up display
A fault in the single-axle electronic height control system is shown in abbreviated form in the head-up display.
The Check-Control symbol in the instrument cluster lights up. The related Check-Control message is displayed
in abbreviated form.
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JBE: Junction box electronics
> E70, E71
The junction box electronics are the gateway between the PT-CAN (powertrain CAN) and the K-CAN (body
CAN).
The D-CAN (diagnosis-on CAN) is connected to the junction box electronics.
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KBM: Body basic module
> E61
The basic body module emits a signal concerning the status of the tailgate (open or closed) and the rear doors.
Signal path: Boot-lid contact switch, rear door contact -> direct wire -> KBM -> K-CAN -> EHC control unit
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KGM: Body gateway module from 09/2005
> E61
From 09/2005, the vehicle electrical system has been modified. The body gateway module supersedes the
safety and gateway module (SGM). The body gateway module is the gateway between the PT-CAN (powertrain
CAN) and the K-CAN (body CAN).
Until 03/2007, the diagnosis wire is connected to the body gateway module.
From 03/2007, the D-CAN (diagnosis-on CAN) supersedes the previous diagnosis interface in all countries.
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KOMBI: Instrument cluster
The EHC control unit (EHC = electronic height control) sends a message through the bus communications
system to the instrument cluster. The instrument cluster supplies a Check Control via the Check-Control symbol
in the LCD display.
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SGM: Safety and gateway module up to 09/2005
> E61
The SGM (safety and gateway module) is the gateway between:
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PT-CAN (powertrain CAN)
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K-CAN (body CAN)
•
Byteflight
The diagnosis wire is connected to the SGM.
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TMFA and FMBF: Driver's door module and front-passenger door module up to 09/2005
> E61
The door modules (driver's door module = TMFA, front-passenger door module = TMBF) supply a signal about
the status of the front doors (OPEN or CLOSED).
Signal path: Door contact -> TMFA/TMBF -> byteflight -> SGM -> K-CAN -> EHC control unit
From 09/2005, the body gateway module (KGM) delivers a signal confirming the status of the front doors (OPEN
or CLOSED).
SBT Single-axle electronic height control E61, E70, E71
BMW AG - TIS
06.02.2013 00:51
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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