Y. Vacuum Circuit Diagrams - ra0701602y500x(0500)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Engine 603.971 with A/T in Model 140 (USA) Model Year 1992

Fig 1: Vacuum Circuit Diagrams

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Vacuum Line Routing (EDS) Engine 603.971 with Automatic Transmission Model 140, Model Year 1992

Pressure and vacuum connections at vacuum transducer

VAC Vacuum from vacuum pump

ATM Fresh air flow to passenger compartment

OUT Outlet from vacuum transducer (Y31/1) to exhaust gas recirculation valve

OUT Outlet from vacuum transducer (Y31/4) to switchover valve (Y31/6) or to boost pressure control valve vacuum unit