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Home >> Mercedes Benz >> 1994 >> E 320 Cabriolet (124.066) L6-3.2L (104.992) >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Air Injection >> Air Injection Control Valve >> Description and Operation >> Air Injection Switch-Over Valve

Air Injection Switch-Over Valve

PURPOSE
The HFM-SFI control module controls air injection via the air injection pump switchover valve (Y32). The switchover valve connects the air injection shut-off valve (126) to vacuum from the intake manifold.

OPERATION
When the HFM-SFI control module energizes the switchover valve, the valve opens and vacuum reaches the air injection shut-off valve.

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