GENERAL DESCRIPTION
MULTIPORT FUEL SYSTEM (MFI)
13A-3
SYSTEM BLOCK DIAGRAM
AK202518
Fuel pressure solenoid
Volume airflow sensor No.1 injector
Intake air temperature sensor
No.2 injector
No.3 injector
No.4 injector
Barometric pressure sensor
Engine coolant temperature
sensor
Vehicle speed sensor
Crankshaft position sensor
Camshaft position sensor
Knock sensor
Manifold differential pressure
sensor
Generator FR terminal
Power steering pressure switch
A/C load signal
Clutch pedal position switch
A/C switch
Fuel temperature sensor
Fuel level sensor
Charge air cooler water spray
switch (AUTO)
Charge air cooler water spray
switch (MANUAL)
Ignition coil
(Ignition power transistor)
A/C compressor clutch relay
Fan control module (Radiator fan)
EVAP purge solenoid
Generator G terminal
EGR solenoid
Volume airflow sensor
Throttle position sensor
Heated oxygen sensor
Fuel tank differential pressure
sensor
Service engine soon/
malfunction indicator lamp
Diagnostic output terminal
Heated oxygen sensor heater
Fuel pump relay 2 (ON/OFF)
EVAP ventilation solenoid
MFI relay
Idle air control motor
(Stepper motor)
[1] Fuel injection control
[2] Idle speed control
[3] Ignition timing control
[6] Heated oxygen sensor heater
control
[7] A/C compressor clutch relay
control
[8] Fuel pressure control
[9] Intake charge pressure control
[10] Fan motor control
(Radiator, A/C condenser)
[11] Volume airflow sensorreset
signal control
[12] Generator control
[13] EVAP emission control
[14] EGR control
[15] Intercooler water spray control
[4] Power supply control
(Power supply to sensor,
actuator)
[5] Fuel pump control
[16] Service engine soon/
malfunction indicator lamp
control
[18] RAM data transmission
[17] Diagnostic output
ACTUATORSENSOR, SWITCH
ENGINE CONTROL MODULE(ECM)
Ignition switch-ST
Ignition switch-IG
Power supply
Fuel pump relay 3 (HI/LO)
Condenser fan relay (HI, LO)
Charge air cooler water spray relay
Charge air cooler water spray lamp
Turbocharger wastegate
solenoid
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