GF09.20-P-6001MIK Component Description For the Variable Intake Manifold Switchover Valve

GF09.20-P-6001MIK Component Description For The Variable Intake Manifold Switchover Valve
- ENGINES 272.942 in MODEL 171.454 as of Model Year 09 / AEJ 08 model refinement package





Front view of variable intake manifold
12 Variable intake manifold with integral vacuum memory
22/6 Intake manifold switchover vacuum unit
Y22/6 Variable intake manifold switchover valve

Location
The switchover valve is mounted at the front of variable intake manifold.

Task
The switchover valve actuates the intake manifold switchover vacuum unit with vacuum from the vacuum reservoir for intake manifold switchover.

Design
The switchover valve consists of a solenoid, a 2-sided valve plate, three air connections and a 2-pin connector.





Function
1 Aeration (atmosphere)
2 Vacuum from the vacuum reservoir
3 Vacuum for intake manifold switchover vacuum unit
A Switchover valve deenergized
B Switchover valve energized (actuated)

The switchover valve is actuated by the intake manifold switchover by the ME-SFI [ME] control unit (N3/10) by means of a ground signal. The voltage supply takes place from "circuit 87 M2".

The valve plate actuated by the coil armature switches between aeration (atmosphere) and vacuum supply from the vacuum reservoir.

In the energized state, connection 1 is closed off by the valve plate and vacuum from the vacuum reservoir builds up in the two intake manifold switchover vacuum units. The long intake tracts are opened in the variable intake manifold.

In the de-energized state, the connection is restored between connections 1 and 3, which causes the intake manifold switchover vacuum units to be ventilated again (through connection 3). The short intake tracts are opened in the variable intake manifold.