GF07.61-P-0001KE Motor Electronics (ME-SFI) Fuel Injection and Ignition System, Function
GF07.61-P-0001KE Motor Electronics (ME-SFI) Fuel Injection And Ignition System, Function
- up to model year 08
The gas injection and ignition system (engine control) SIM 4KE is a further development of the distributor ignition system and HFM sequential multiport fuel injection/ignition system.
The abbreviation SIM 4KE means:
S = Siemens
I = Integrated
M = Motorsteuerung (Engine Control)
4 = 4-cylinder
KE = Kanal-Einspritzer (port injection)
Engine control is incorporated within the ME control unit (N3/10) and contains the following systems:
^ Ignition system
^ Injection system
^ Electronic accelerator
^ Diagnosis and fault storage
^ Drive authorization system and immobilizer
^ Emission control system
The ME-SFI [ME] control unit evaluates the following basic information for engine control:
- Intake air temperature
- Coolant temperature
- Atmospheric pressure
- Intake manifold pressure
- O2 concentration upstream and downstream of the firewall catalytic converter
- Throttle valve position
- Recirculated air flap position
- Inlet and exhaust camshaft position
- Accelerator pedal position
- Clutch operating system (for transmission 716)
- Alternator interface
- Air mass
- Engine speed and crankshaft position
- Knock identification
- Brake recognition (up to about 2004)
- Oil temperature (up to 05/05)
Additional input signals received by the ME control unit via the CAN data bus (Controller Area Network) are, for example:
- Vehicle speed
- Drive position detection (with transmission 722)
- Cruise control detection
- Brake recognition (from about 2004)
- Start enable (drive authorization system)
- Crash signal
According to the equipment and the model, individual control units are networked with each other via the CAN data bus. The following control units networked with the ME-SFI [ME] control unit are responsible for the engine control:
^ Driver-side SAM control unit with fuse and relay module (N10/1) (models 171, 211)
^ Front SAM control unit with fuse and relay module (N10/1) (models 203, 209)
^ Rear SAM control unit with fuse and relay module (/)N10/2
^ ESP and BAS control unit (N47-5) (models 171, 203, 209)
^ ESP control unit (N47-5) (model 211)
^ ME-SFI [ME] control unit (/)N3/10
^ Instrument cluster (A1)
^ ETC [EGS] control unit (N15/3) (with transmission 722
^ Electronic selector lever module control unit (N15/5) (with transmission 722)
^ AAC [KLA] control and operating unit (N22)
^ EIS [EZS] control unit (N73)
^ Steering column module (N80)
^ Central gateway control unit (N93) (except model 203 up to 03/04 and from 12/04, model 209)
^ Restraint systems control unit (/)N2/7
^ Automated manual transmission control unit (N15/6) (with transmission 716.4)
^ DTR control unit (N63/1) (for model 211 with Distronic until 06/04)
^ DTR control unit (A89n1) (for model 211 with Distronic from 07/04)
The entire test program for engine control is contained in the STAR DIAGNOSIS.
