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IFI smooth running control function - GF07.12-P-3003HA

ENGINE 605.960 in MODEL 202.128 as of 1.4.96, 202.188 

ENGINE 605.912 in MODEL 210.010 as of 1.6.96, 210.210 /610 

ENGINE 606.912 in MODEL 210.020 as of 1.6.96 with CODE (491) U.S. version 

ENGINE 606.962 in MODEL 210.025 /225 

ENGINE 606.961 in MODEL 140.135 

ENGINE 605.962 in MODEL 210.015 /215 

Fig 1: Identifying IFI Smooth Running Control Function
G04623938Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task 

Reducing irregular engine running produced in the idle speed phase (vibrations).

Operation 

The IFI control module (N3/7) receives from the IFI/DFI crankshaft position sensor (L5/6) an engine speed signal and detects irregularities in engine speeds. These irregularities in engine speed are rectified by controlling the quantity of fuel injected at the specific cylinders. Idle speed in this case remains constant.

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