S 600 Sedan (140.057) V12-6.0L (120.982) (1996)
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