IFI Function Diagram

10 Inline injection pump
12/4 Resonance intake line vacuum unit
12/5 Resonance intake manifold vacuum unit
24 Accelerator pedal
63 Check valve
100 Intake manifold
102 Pressure regulating flap vacuum unit
104 Vacuum pump
107 Exhaust manifold
111 Oxidation catalytic converter
112/1 Air admission filter
A1 Instrument cluster
A1e26 CHECK ENGINE malfunction indicator lamp
B11 Coolant temperature sensor
B17 Intake air temperature sensor
B28 Pressure sensor
B28/3 EGR lift sensor
CAN Data bus
K40 Relay module
L5/6 Crankshaft position sensor
N3/7 IFI control module
N14/2 Glow output stage
N15/3 ETC control module
N19/1 Tempmatic air conditioning pushbutton control unit
N22 Automatic air conditioning pushbutton control unit
N47-2 ETS control module
N54/1 Infrared drive authorization system control module
R25/2 Accelerator pedal position sensor
S2/2 Glow/starter switch
S40 Cruise control switch
S43 Oil level indicator switch
Y22/6 Resonance in take manifold switchover valve
Y22/7 Resonance intake line switch over valve
Y31/1 EGR vacuum transducer
Y31/2 Pressure regulating flap vacuum transducer
a Signal from fuel rack position sensor (Y23/1I1)
b Signal to IFI fuel metering control (Y23/1)
c Signal from fuel temperature sensor (Y1/1b1)
d Signal to IFI electrohydraulic shutoff (Y23/1)
e Signal from resonance intake manifold switch (S35)
f Signal from resonance intake line switch (S35/1)
g Input signal circuit 50 glow/starter switch (S2/2)
VAC Vacuum from vacuum pump
OUT Outlet from vacuum transducer
ATM Air admission to component compartment