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Home >> Mercedes Benz >> 2007 >> S550 Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Air Intake, Turbo Charging -- S-Class (221) >> Basic Knowledge >> Charge air cooler circulation pump relay, location/task/design/function - GF09.41-P-3106M

Charge air cooler circulation pump relay, location/task/design/function - GF09.41-P-3106M

ENGINE 275.950 in MODEL 215, 220 

ENGINE 275.951 in MODEL 230 up to Model Year 08 /AEJ 07 

ENGINE 275.953 in MODEL 216, 221 up to Model Year 08 /AEJ 07 

ENGINE 275.954 in MODEL 230 up to Model Year 08 /AEJ 07 

ENGINE 275.980 in MODEL 215, 220 

ENGINE 275.981 in MODEL 230 up to Model Year 08 /AEJ 07 

ENGINE 275.982 in MODEL 216, 221 up to Model Year 08 /AEJ 07 

ENGINE 285.950 in MODEL 240 

ENGINE 285.980 in MODEL 240 

Shown on engine 275.950/951/980, 285 

Fig 1: Identifying Charge Air Cooler Circulation Pump Relay
G07630312Courtesy of MERCEDES-BENZ USA
  Relay for charge air cooler recirculation pump - location Model 215, 220 GF09.41-P-3106-01MA
Model 216, 221 with engine 275.953/982 GF09.41-P-3106-01MS 
Model 230 with engine 275.951/954 GF09.41-P-3106-01RA
Model 230 with engine 275.981 GF09.41-P-3106-01RB
Model 240 GF09.41-P-3106-01MM
  Relay for charge air cooler recirculation pump - task Actuates the charge air cooler recirculation pump.  
  Relay for charge air cooler recirculation pump - design Relay for charge air cooler recirculation pump is a 4-pin plug-in relay.  
  Relay for charge air cooler recirculation pump, function Upon actuation of the ME control unit by a ground signal, the power supply contact closes and thus supplies the charge air cooler recirculation pump (M44) fused with a voltage (circuit 87).