S 500 Coupe (140.070) V8-5.0L (119.970) (1995)
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EGR Control Solenoid: Description and Operation
PURPOSE
The LH control module controls exhaust gas recirculation via the EGR switchover valve (Y27). The switchover valve connects the EGR valve to
vacuum from the throttle valve assembly.
EGR Switchover Valve (Y27) And Air Injection Pump Switchover Valve (Y32)
LOCATION
The valve is located in engine compartment on passenger side front corner of vehicle.
OPERATION
When the LH control module energizes the switchover valve, the valve opens and vacuum reaches the EGR valve.
