Mitsubishi Galant (2004+). Manual — part 1743
13B-1
GROUP 13B
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .
FUEL INJECTION CONTROL . . . . . .
THROTTLE VALVE OPENING ANGLE
CONTROL . . . . . . . . . . . . . . . . . . . . .
IGNITION TIMING CONTROL . . . . . .
FAN CONTROL
(RADIATOR, A/C CONDENSOR). . . .
OTHER CONTROL FUNCTIONS . . . .
ON-BOARD DIAGNOSTIC . . . . . . . . .
GENERAL DESCRIPTION
MULTIPORT FUEL SYSTEM (MFI) <3.8L ENGINE>
13B-2
GENERAL DESCRIPTION
M2132000100376
The basic design is the same as that for the 3.8 L
engine installed in the ENDEAVOR except that the
following modifications have been incorporated:
IMPROVEMENT / ADDITION
REMARK
A pulsation damper is discontinued.
System is simplified.
The fan control is changed.
The fan controller is abolished. The both of
high and low relays control the fan motor.
GENERAL DESCRIPTION
MULTIPORT FUEL SYSTEM (MFI) <3.8L ENGINE>
13B-3
SYSTEM BLOCK DAIGRAM
[1] Fuel injection control
[3] Ignition timing control
[4] Power supply control
(Power supply to sensor,
actuator)
[5] Fuel pump control
[6] Heated oxygen sensor heater
control
[7] A/C compressor clutch relay
control
[9] EVAP emission control
[8] Fan motor control
(Radiator, A/C condensor)
[10] EGR control
[13] Generator control
[11] Diagnostic output
[12] RAM data transmission
· Throttle opening feedback control
*: Indicates power that is input into throttle valve control unit, sensor, and actuator that is controlled by throttle valve control unit.
[2] Throttle valve opening control
and idle speed control
ACTUATOR
SENSOR, SWITCH
POWERTRAIN CONTROL MODULE (PCM)
Powertrain control module
Barometric pressure sensor
Throttle valve control unit
No.5 Ignition coil
Throttle actuator control motor
(DC motor)*
Throttle actuator contorol motor
power*
Throttle position sensor (Main)*
Accelerator pedal position
sensor (Sub)*
AK304202
Mass airflow sensor
Engine coolant temperature
sensor
Accelerator pedal position
sensor (Main)
Throttle position sensor (Sub)
Crankshaft position sensor
Knock sensor
Camshaft position sensor
Heated oxygen sensor
Power steering pressure switch
Transmission range switch
Fuel tank differential pressure
sensor
Fuel tank temperature sensor
Fuel level sensor
MAP sensor
Ignition switch-IG
Ignition switch-ST
Power supply
Generator FR terminal
Intake air temperature sensor
No.1 injector
No.2 injector
No.3 injector
No.4 injector
No.5 injector
No.6 injector
No.1 Ignition coil
No.2 Ignition coil
No.3 Ignition coil
No.4 Ignition coil
No.6 Ignition coil
MFI relay
Fuel pump relay
Heated oxygen sensor heater
EVAP purge solenoid
EVAP ventilation solenoid
EGR valve (Stepper motor)
Diagnostic output terminal
Generator G terminal
Throttle actuator control motor
relay
A/C compressor clutch relay
Fan control relay
(Radiator, A/C condensor)
GENERAL DESCRIPTION
MULTIPORT FUEL SYSTEM (MFI) <3.8L ENGINE>
13B-4
CONTROL SYSTEM DAIAGRAM
AK301872
MANIFOLD
ABSOLUTE
PRESSURE
SENSOR
THROTTLE
ACTUATOR
CONTROL
MOTOR
CAMSHAFT
POSITION
SENSOR
LEFT BANK HEATED OXYGEN
SENSOR (FRONT)
FUEL TANK
DIFFERENTIAL
PRESSURE
SENSOR
FUEL TANK
TEMPERATURE
SENSOR
EVAPORATIVE EMISSION
VENTILATION VALVE
FUEL TANK
EVAPORATIVE
EMISSION
CANISTER
3 THROTTLE POSITION SENSOR
(MAIN/SUB)
MASS AIRFLOW
SENSOR
ENGINE
COOLANT
TEMPERATURE
SENSOR
IGHTBANK
EATED
XYGEN
ENSOR
FRONT)
RIGHT BANK HEATED
OXYGEN SENSOR (REAR)
FUEL PRESSURE
REGULATOR
EVAPORATIVE
EMISSION
VENTILATION
SOLENOID
LEFT BANK HEATED OXYGEN
SENSOR (REAR)
FUEL PUMP
CRANKSHAFT POSITION
SENSOR
FUEL
LEVEL
SENSOR
AIR
INLET
INTAKE AIR TEMPERATURE
SENSOR
EVAPORATIVE
EMISSION
PURGE SOLENOID
INJECTOR
EGR VALVE
(STEPPER MOTOR)
1 MASS AIRFLOW SENSOR
2 INTAKE AIR TEMPERATURE SENSOR
3 THROTTLE POSITION SENSOR (MAIN/SUB)
4 MANIFOLD ABSOLUTE PRESSURE SENSOR
5 ENGINE COOLANT TEMPERATURE SENSOR
6 CAMSHAFT POSITION SENSOR
7 CRANKSHAFT POSITION SENSOR
8 RIGHT BANK HEATED OXYGEN SENSOR (FRONT)
9 RIGHT BANK HEATED OXYGEN SENSOR (REAR)
10 LEFT BANK HEATED OXYGEN SENSOR (FRONT)
11 LEFT BANK HEATED OXYGEN SENSOR (REAR)
12 FUEL TANK DIFFERENTIAL PRESSURE SENSOR
13 FUEL TANK TEMPERATURE SENSOR
14 FUEL LEVEL SENSOR
ACCELERATOR PEDAL POSITION SENSOR
(MAIN/SUB)
KNOCK SENSOR
POWER STEERING PRESSURE SWITCH
OUTPUT SHAFT SPEED SENSOR
TRANSMISSION RANGE SWITCH
GENERATOR FR TERMINAL
IGNITION SWITCH - IG
IGNITION SWITCH - ST
POWER SUPPLY
1 THROTTLE ACTUATOR
CONTROL MOTOR
2 EGR VALVE (STEPPER
MOTOR)
3 INJECTOR
4 EVAPORATIVE EMISSION
PURGE SOLENOID
5 EVAPORATIVE EMISSION
VENTILATION SOLENOID
IGNITION COIL, IGNITION
POWER TRANSISTER
MULTIPORT FUEL
INJECTION (MFI) RELAY
FUEL PUMP RELAY
THROTTLE ACTUATOR
CONTROL MOTOR RELAY
GENERATOR G TERMINAL
HEATED OXYGEN SENSOR
HEATER
FAN CONTROL RELAY
(RADIATOR, A/C CONDENSER)
A/C COMPRESSOR CLUTCH
RELAY
DIAGNOSTIC OUTPUT
PCM (WITH
BAROMETRIC
PRESSURE
SENSOR)
SENSE
DECIDE
ACT
AB
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