LEMON Manuals: Even more car manuals for everyone
Home >> Mercedes Benz >> 2002 >> S55 >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Mixture Formation -- Basic Knowledge -- 215 & 220 Chassis - 2 Of 2 >> Basic Knowledge >> ME-SFI warming-up control, function - GF07.61-P-3022 >> ME-SFI warming-up control - function - GF07.61-P-3022SM

ME-SFI warming-up control - function - GF07.61-P-3022SM

ENGINE 113.986 

ENGINE 113.987 

ENGINE 113.988 

ENGINE 113.989 

Fig 1: ME-SFI Warming-Up Control - Function (Engine 113)
G04738369

The fuel-air mixture is further enriched via the warm-up control after start and post-start enrichment. The warm-up enrichment compensates for the fuel which precipitates on the still cold engine parts.

The engine receives an additional fuel quantity allocated to it by the ME-SFI [ME] control unit (N3/10) in line with the performance map. The injection time is extended accordingly for this purpose.

The warming-up enrichment is dependent on:

  Component description for the fuel injection valves Y62 GF07.03-P-6010SM
  Component description for the crankshaft position sensor L5 GF07.04-P-6010SM
  Component description for the coolant temperature sensor B11/4 GF07.04-P-6040SM
  Component description for pressure sensor B28 GF07.04-P-6060SM
  Component description for hot film MAF sensor B2/5 GF07.07-P-6000SM
  Component description for the ME-SFI [ME] control unit N3/10 GF07.61-P-6000SM 
  Component description for the accelerator pedal sensor B37 GF30.20-P-2010SM
  Component description of throttle valve actuator M16/6 GF30.20-P-2020SM