C 230 (203.052) V6-2.5L (272.920) (2007)
Engine Control Module: Description and Operation
AH07.61-P-0002-02VU ME-SFI Vehicle Features
AH07.61-P-0002-02VU ME-SFI Vehicle Features
Functions/components for national version (USA):
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CHECK ENGINE indicator lamp (A1e26)
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Fuel system open warning (fuel tank cap indicator)
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Purge system with leak test.
Additional components:
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Fuel tank pressure sensor (B4/3)
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Activated charcoal canister shutoff valve (Y58/4)
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Vent line to activated charcoal canister without vent valve and with large diameter, model 171.
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During refueling the fuel vapors are collected at the filler neck and passed to the activated charcoal filter (ORVR = Onboard Refueling Vapor
Recovery).
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The activated charcoal canister is enlarged.
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The pulse switchover valve is designed for a larger flow volume (color coding).
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From MY 2005 a PremAir sensor (B11/15) can be installed on the radiator in model 211. It has the task of recognizing a coated PremAir radiator.
This catalytically converts ozone into oxygen and therefore needs controlling. The engine control unit recognizes the PremAir sensor via a local
interconnect network interface and checks the plausibility of the detected temperature pattern.
If a PremAir radiator is replaced by an uncoated radiator then an error is detected and the "CHECK ENGINE" indicator lamp actuated.
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Flexible Fuel Vehicle (FFV), engine 272.920/940 as standard from 1.6.06
Flexible-fuel vehicle vehicles can be filled up premium fuel or ethanol (proportion of ethanol: 85 %). This creates mixtures in the fuel tank with an
ethanol concentration of 0 to 85%. The proportion of ethanol is taught in at every filling of the tank and the mixture formation is adjusted
accordingly.
GF07.61-P-0001-02V Motor Electronics (ME-SFI) Fuel Injection and Ignition System Function
Diagram
GF07.61-P-0001-02V Motor Electronics (ME-SFI) Fuel Injection And Ignition System Function Diagram