ENGINE <TURBO>
-
Control System
SYSTEM BLOCK DIAGRAM
Sensors Engine control module (ECM)
Volume air flow sensor
--b
Fuel injection control
I
1
I
t
I
I
Intake air temperature sensor
I-1
I
I
I
Barometric pressure sensor
b
Engine coolant temperature sensor
+
Idle air control
Throttle position sensor
b
Closed throttle position switch
Ignition timing control
Engine and transaxle
total control
1
Crankshaft position sensor
b
Power supply control
Camshaft position sensor
Fuel pump control,
Heated oxygen sensor (front, rear)
-+
Air conditioning compressor
clutch relay control
Vehicle speed sensor (reed switch)
+
Fuel pressure control
Air conditioning switch
b
i
Intake charge pressure control
‘ti
Air conditioning pressure switch
I
b
Turbo meter control
I
Power steering pressure switch
b
Electric load switch
b
Park/Neutral position switch
<AIT>
+
Ignition switch-IG
+
Ey;‘purge
solenoid
Knock sensor
.----b
EGR solenoid control
Transaxle control module (TCM)
-W
Volume air flow sensor
reset signal control
Manifold differential pressure (MDP)
sensor
,
Cooling fan control
Generator FR terminal
b
Generator current control
Ignition timing adjustment terminal
b
!(,&
Oxygen sensor heater control
Ignition power transistor unit
b
I , I
Diagnostic control terminal
Power supply
1x1
;;IEd
diagnostic (OBD)
N71
BKOOAB
Actuators
-1
No. 1 injector
-1
No. 2 injector
--+I
No. 3 injector
-1
No. 4 injector
Idle air control motor
-’
(stepper motor)
Ignition coil
-
(ignition power transistor)
Multiport fuel injection
-
(MFI) relay
-
Air conditioning compressor
clutch relay
___*I
Fuel pressure solenoid
---+
Turbocharger waste gate solenoid
&
Turbo meter
-1
EVAP purge solenoid
-
EGR solenoid
__+I
Volume air flow sensor
Radiator fan motor relay and air
-
conditioning condenser relay
-1
Generator G terminal
d
Oxygen sensor heater
Check Engine/Malfunction
-
injector lamp
-1
Diagnostic output terminal
I
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