Component description for the electric air pump - GF14.30-P-2000AMG

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 156.980 in MODEL 164, 251

ENGINE 156.982 in MODEL 209

ENGINE 156.983 in MODEL 211, 219

ENGINE 156.984 in MODEL 216, 221

Location on model 164

The electric air pump is located at the right front in the engine compartment.

Fig 1: Identifying Electric Air Pump - Model 164

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location for model 209 without code P98 Black Series

The electric air pump is located at the bottom left behind the front bumper.

Fig 2: Identifying Electric Air Pump - Model 209 Without Code P98 Black Series

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location for model 209 with code P98 Black Series

The electric air pump is located at the left front in the engine compartment.

Fig 3: Identifying Electric Air Pump - Model 209 With Code P98 Black Series

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location on model 211, 219

The electric air pump is located at the bottom left behind the front bumper.

Fig 4: Identifying Electric Air Pump - Model 211, 219

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location on model 216, 221

The electric air pump is located at the front right behind the front bumper.

Fig 5: Identifying Engine Oil Heat Exchanger, Electric Air Pump And Engine Coolant Circulation Pump

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location on model 251

The electric air pump is located at the front right behind the front bumper.

Fig 6: Identifying Electric Air Pump - Model 251

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

The electric air pump blows fresh air for air injection into the exhaust ducts of the cylinder heads.

Air injection allows afterburning in the exhaust ducts or in the catalytic converters which brings the catalytic converters more quickly up to operating temperature.

Design

The electric air pump is a sliding vane pump with an output of 480 W.

Diagnosis

Air injection can be released for diagnosis with STAR DIAGNOSIS for a max. of 2 minutes (for a warm engine only shortly).

Prior to the next actuation, it is essential to maintain a cooling time of 30 minutes, otherwise the air pump may be damaged (overheated).

Actuation for model 164, 251 (shown is the engine compartment at the right)

The electric air pump is actuated via the air pump relay by the ME-SFI [ME] control unit (N3/10) for a maximum of 40 seconds for released air injection.

The air pump switchover valve (Y32) is also actuated in parallel by the ME-SFI [ME] control unit.

Fig 7: Identifying Engine Compartment Fuse And Relay Box, Engine Circuit 87, Air Pump And Starter Relays

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Actuation for model 209, (shown is the engine compartment at the bottom left)

The electric air pump is actuated via the air pump relay by the ME-SFI [ME] control unit (N3/10)for a maximum of 40 seconds for released air injection.

The air pump switchover valve (Y32) is also actuated in parallel by the ME-SFI [ME] control unit.

Fig 8: Identifying Front SAM Control Unit With Fuse And Relay Module, Air Pump, Starter And Circuit 87 Relays - Model 209

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Actuation for model 211, 219

Figure on left: Trunk on the right except model 211.2 with code 810, Sound system

Figure on right: Trunk on the lower right for model 211.2 with code 810, Sound system

Fig 9: Identifying FP Fuse, Air Injection Fuse And Air Injection Relay

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The electric air pump is actuated via the air pump relay by the ME-SFI [ME] control unit (N3/10) for a maximum of 40 seconds for released air injection.

The air pump switchover valve (Y32) is also actuated in parallel by the ME-SFI [ME] control unit.

Actuation for model 216, 221 (shown is the engine compartment at the bottom left)

Fig 10: Identifying Front SAM Control Unit With Fuse And Relay Module, Air Pump, Starter And Circuit 87 Relays - Model 216

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The electric air pump is actuated via the air pump relay by the ME-SFI [ME] control unit (N3/10) for a maximum of 40 seconds for released air injection.

The air pump switchover valve (Y32) is also actuated in parallel by the ME-SFI [ME] control unit.