IFI Function Diagram

10 Inline injection pump
24 Accelerator pedal
63 Check valve
101 EGR valve
103/2 Mixing housing
104 Vacuum pump
107/3 Corrugated pipe
110 Turbocharger
110/2 Intercooler
110/10 Boost pressure control valve vacuum unit
111 Oxidation catalytic converter
112/1 Air admission filter
A1 Instrument cluster
A1e26 CHECK ENGINE malfunction indicator lamp ((USA) only)
A1e43 EPC malfunction indicator lamp (except (USA))
B2/5 Hot film mass air flow sensor
B11 Coolant temperature sensor
B17 Intake air temperature sensor
B28 Pressure sensor
CAN Data bus
K40/4 Fuse and 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 module
N22 Automatic air conditioning pushbutton control module
N47-1 ASR control module
N73 Electronic ignition switch control module CAN signal for releasing hardware line for start signal circuit 50
R25/2 Accelerator pedal position sensor
S40/4 Cruise control (CC) switch variable
S43 Oil level indicator switch
Y31/1 EGR vacuum transducer
Y31/5 Vacuum transducer boost pressure regulation
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)
VAC Vacuum from vacuum pump
OUT Outlet from vacuum transducer
ATM Air admission to component compartment