mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Intake Manifold|Diagrams|Page 2278 > < Intake Manifold|Diagrams
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Function diagram of secondary air injection and vacuum supply model 129, 109 (USA) with engine 120 ME-SFI

40

Diaphragm pressure regulator

125

Air pump

126

Air shutoff valve

126a

Right air shut-off valve

127

Left check valve(injected air)

128

Check valve (vacuum)

135

Check valve (vacuum supply)

136

Vacuum reservoir

B28/1

Left intake manifold pressure sensor

B28/2

Right intake manifold pressure sensor

M16/3

Left electronic accelerator(EA)/cruise control (CC)/idle speed control (ISC) actuator,located on left of engine

M16/4

Right electronic accelerator (EA) cruise control (CC)/idle speed control (ISC) actuator,located on right of engine

Y32

Air pump switchover valve

Y33

Air pump electromagnetic coupling

Y58/2

Left purge control valve

Y58/3

Right purge control valve

a

to activated charcoal filter

rt

red

gr

grey

sw

black

tr

neutral

Intake Manifold|Diagrams|Page 2278 > < Intake Manifold|Diagrams