R 350 4MATIC (251.165) V6-3.5L (272.967) (2006)
Air Injection Pump Relay: Description and Operation
GF14.30-P-2010V Component Description For the Air Pump Relay
GF14.30-P-2010V Component Description For The Air Pump Relay
Location
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Model 203, 209, 221: in the front SAM control unit with fuse and relay module
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Models 171, 211, 219: in driver-side SAM control unit with fuse and relay module
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Model 230: fuse and relay module for the front passenger
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Model 164, 251: In the engine compartment fuse and relay box.
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.