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Mercedes Benz Workshop Service and Repair Manuals

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Relays and Modules - Fuel Delivery and Air Induction > < Secondary Air Injection Relay, Location|Page 372

SLK 230 (170.447) L4-2.3L SC (111.973) (2000)

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Air Injection Pump Relay: Description and Operation
Secondary Air Injection Relay, Function

Secondary Air Injection Relay, Function

Shown on model 129
K17 

Secondary air injection relay

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

Relays and Modules - Fuel Delivery and Air Induction > < Secondary Air Injection Relay, Location|Page 372