Component description for the air pump relay - GF14.30-P-2010V

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 272.920 in MODEL 203

ENGINE 272.922 in MODEL 211

ENGINE 272.940 in MODEL 203, 209

ENGINE 272.941 in MODEL 203

ENGINE 272.942 in MODEL 171

ENGINE 272.943 in MODEL 211

ENGINE 272.944 in MODEL 211

ENGINE 272.945 in MODEL 251

ENGINE 272.946 in MODEL 221

ENGINE 272.960 in MODEL 203, 209

ENGINE 272.963 in MODEL 171

ENGINE 272.964 in MODEL 211, 219

ENGINE 272.965 in MODEL 221

ENGINE 272.966 in MODEL 230

ENGINE 272.967 in MODEL 164, 251

ENGINE 272.970 in MODEL 203

ENGINE 272.972 in MODEL 211

ENGINE 272.975 in MODEL 221

ENGINE 273.922 in MODEL 221

ENGINE 273.923 in MODEL 164

ENGINE 273.924 in MODEL 221

ENGINE 273.943 in MODEL 164

ENGINE 273.960 in MODEL 211, 219

ENGINE 273.961 in MODEL 216, 221

ENGINE 273.962 in MODEL 211

ENGINE 273.963 in MODEL 164, 251

ENGINE 273.965 in MODEL 230

ENGINE 273.967 in MODEL 209

ENGINE 273.968 in MODEL 221

Shown on engine 272.963 in model 171

Fig 1: Identifying Air Pump Relay - Shown On Engine 272.963 In Model 171

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

Model 203, 209, 221: in the front SAM control unit with fuse and relay module
Models 171, 211, 219: in driver-side SAM control unit with fuse and relay module
Model 230: fuse and relay module for the front passenger
Model 164, 251: In the engine compartment fuse and relay box.

Shown on model 211, 219

Fig 2: Identifying Air Pump Relay Components - Shown On Model 211, 219

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

Actuates electrical air pump and air pump switchover valve.

Design

Vehicle specific relay with flat plug contacts and a closing contact.

Function

The secondary air injection relay is operated by the ME-SFI control unit through an output stage by means of a GND signal. The voltage is supplied through circuit 87.