6 Series E64 650i (N62TU) CONVER
evaluates the signals from the two eccentric shaft sensors. The Valvetronic control unit actuates the Valvetronic
actuator motor to adjust the eccentric shaft.
The Valvetronic control unit receives its power supply via the Valvetronic relay in the integrated supply module.
> E70
The Valvetronic control unit receives its power supply from the front power distributor in junction box.
The Valvetronic control unit continuously checks whether the actual position of the eccentric shaft corresponds
with its nominal position. This makes it possible to detect any stiff movements in the mechanics. In the event of a
fault, the valves are opened as wide as possible. The air supply is then controlled by the throttle valve.
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Integrated supply module
> N62TU in the E70
The E70 does not have an integrated supply module.
> N62TU
The 8-cylinder spark-ignition engine has an integrated supply module. The integrated supply module includes
various fuses and relays (not a control unit, just a distributor). The integrated supply module acts as the central
interface between the vehicle wiring harness and the engine wiring harness.
The PT-CAN is also routed through the integrated supply module.
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CAS control unit
The electronic immobiliser is integrated into the CAS control unit as an anti-theft system.
The engine can only be started if the electronic immobiliser enables this.
Moreover, the CAS control unit provides the powertrain CAN wake-up signal (terminal 15 wake-up) to the DME.
The CAS control unit switches the starter motor on (convenient-start system).
> E65, E66
The DME switches the starter motor on.
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Alternator
The alternator exchanges data with the DME control unit using a bit-serial data interface. The alternator sends
the DME control unit information on type and manufacturer, for example. This enables the DME control unit to
modify the alternator control to suit the alternator model which has been installed.
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DSC control unit
The DSC control unit sends the signal containing information on the vehicle's road speed via a separate line
(redundant to PT-CAN) to the DME control unit. The signal is needed for various functions, e.g. for the cruise-
control system and speed limiter.
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Instrument cluster
The outside temperature sensor sends its signal to the instrument cluster.
The instrument cluster forwards the signal through the bus to the DME.
The outside temperature is needed for a number of functions in the control unit that include temperature-
dependent values.
In the event of a fault in the outside temperature sensor, the DME control unit reacts with an entry in the fault
memory. The DME calculates a substitute value from the intake-air temperature.
The instrument cluster switches the DME indicator and warning lights on, e.g. the emissions warning light. The
instrument cluster displays any Check-Control messages present.
The fuel level sensor is also connected to the instrument cluster. The instrument cluster emits the signal from
the level sensor as a message on the CAN. The DME needs this CAN message about the fuel level so that it
can deactivate misfiring detection when the fuel level is low and to enable the DMTL (DMTL = "diagnosis module
SBT 8-cylinder spark-ignition engine N62TU E60, E61, E63, E64, E65, E66, E70
BMW AG - TIS
06.02.2013 10:29
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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