ME-SFI vehicle features - AH07.61-P-0002-02GE

Version ME-SFI2.1 

Engine 104.941/943/944/991/994 as of 1.8.96 

Engine 104.995 

Engine 111.975 as of 1.8.96 

Engine 111.943/944/973 

Engine 111.974 

Fig 1: Identifying Control Module Connectors

Courtesy of MERCEDES-BENZ USA

Special functions/components of ME-SFI version 2.1 compared to ME-SFI version 1.0:

• ME-SFI 2.1 control module with 6 connectors
• Hot film mass air flow sensor with integrated intake air temperature sensor (rectangular connector, round bayonet lock discontinued)
• Models with engine 111, air conditioning and electric suction fan: fan control by means of ME-SFI control module
• Starter recognition through circuit 50
• Starter control on model 170 and model 202 with engine 111
• Intake manifold changeover with engine 104
• Boost pressure control, compressor control on engines with turbo charging
• Twin-spark ignition coils with engine 111 and 104
• Reversing with modified pedal value sensor characteristic
• Secondary air injection engine 104 and engine 111
• Exhaust gas recirculation on engine 111.974
• GND of O₂ sensor signals increased by 0.268 V compared to general vehicle ground
• CAN-compatible instrument cluster required (programmed with HHT in accordance with vehicle version)
• Coolant temperature sensor with 2-pin plug connection, modified characteristic
• Body acceleration sensor for analyzing a regular running discontinued. Rough road recognition signal through CAN from ETS/ASR/ESP control module
• Various drive authorization systems:

  DAS 2a: transponder technology, in model 170 as of approx. 2/97 in addition with remote trunk lid release (DAS 2b) DAS 3: model 208 and model 202 as of approx. 2/97 with electronic ignition key and electronic ignition switch EIS control module.

  Drive authorization system with infrared system. Exterior receivers on front doors and at rear.