ENGINE   113.986 ENGINE   113.987 ENGINE   113.988 ENGINE   113.989

Y22/6 Variable intake manifold switchover valve The variable intake manifold switchover valve is located at the front to the left of the variable intake manifold. Task The variable intake manifold switchover valve discharges the variable intake manifold vacuum capsule for the purpose of intake manifold switchover with vacuum pressure and then ventilates the variable intake manifold vacuum capsule.
		P09.20-2145-11

Design The variable intake manifold switchover valve is an electromagnetic switchover valve in plastic housing with a coil resistance of around 25 . A valve plated operated by a coil armature switches between ambient pressure and the vacuum memory.

Function 1 Variable intake manifold vacuum capsule connection 2 Vacuum memory connection (in variable intake manifold) 3 Ventilation connection (atmospheric) 4 Wiring connector A Variable intake manifold switchover valve energized (vacuum capsule discharged with vacuum pressure) B Variable intake manifold switchover valve energized (vacuum capsule ventilated)
		P09.20-2146-75

N3/10The variable intake manifold switchover valve is actuated on the earth side by the ME control unit through its own output stage. Supply voltage is provided by "circuit 87 M2e".