SL 550 (230.471) V8-5.5L (273.965) (2008)
Engine Control Module: Description and Operation
GF07.61-P-0001V Motor Electronics (ME-SFI) Fuel Injection and Ignition System, Function
GF07.61-P-0001V Motor Electronics (ME-SFI) Fuel Injection And Ignition System, Function
The ME 9.7 fuel injection and ignition system is an advance development of the ME 2.8. The abbreviated designation ME-SFI 9.7 means:
M = Motronic (motor electronics)
E = Electronic accelerator pedal
9.7 = Version 9.7
In engine control unit, the ME-SFI [ME] control unit (N3/10), the following function are consolidated:
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Ignition system
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Injection system
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Electronic accelerator
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Idle speed control
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Torque interface
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Diagnosis and fault storage
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Gateway between the drive CAN and the chassis CAN
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Immobilizer and drive authorization
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Evaporative emission control system (for (USA) with leak test)
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Fuel supply
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Starter control
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Fan control
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Secondary air injection
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Emission control
The ME-SFI [ME] control unit is flashable. The software required to program the control units is provided on the DAS Update DVD.
The ME-SFI [ME] control unit evaluates the following basic information:
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Air mass
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Coolant temperature
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Engine speed/crankshaft position
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Smooth operation of the engine (misfire detection)
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Throttle valve position
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Accelerator pedal position
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O2 sensor signals
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Intake manifold pressure
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Intake air temperature
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Outside air temperature
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Air pressure (altitude)
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Inlet and exhaust camshaft position
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Vehicle speed (via CAN)
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Steering angle (via CAN)
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Alternator interface
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Knocking of engine
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Brake recognition (via CAN)
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Oil level
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Position of the clutch pedal (for manual transmission 716.6)