Air Injection: Diagrams

Function Diagram Of Secondary Air Injection And Vacuum Supply ME-SFI
40 Diaphragm pressure regulator
125 Secondary air pump
126 Left air shut-off valve
126a Right air shut-off valve
127 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 Electronic accelerator (EA)/cruise control (CC)/idle speed control (ISC) actuator located on left of engine
M16/4 Electronic accelerator (EA)/cruise control (CC)/idle speed control (ISC) actuator, located on right of engine

Y32 Air pump switch over valve
Y33 Air pump electromagnetic coupling
Y58/2 Left purge control valve
Y58/3 Right purge switch over valve
a to activated charcoal fitter
rt red
gr grey
sw black
tr neutral