Mitsubishi Galant (2004+). Manual - part 1741

IGNITION TIMING CONTROL

MULTIPORT FUEL SYSTEM (MFI) <2.4L ENGINE>

13A-7

IGNITION TIMING CONTROL

M2132005000266

•

The ignition coil is the direct-ignition type in which 
one coil is provided for every cylinder. This has 
improved the ignition performance of the system 
by eliminating the energy loss associated with the 
spark plug cables and the exhaust stroke ignition.

•

Other control systems are basically the same as 
those of the 2.4L engine installed in the LANCER 
WAGON.

.

System Configuration Diagram

AK101328AF

1

2

3

4

MASS AIRFLOW
SENSOR

INTAKE AIR 
TEMPERATURE SENSOR

ENGINE COOLANT
TEMPERATURE SENSOR

CAMSHAFT POSITION 
SENSOR

CRANKSHAFT POSITION 
SENSOR

TRANSMISSION RANGE
SWITCH

IGNITION SWITCH-ST

KNOCK SENSOR

PCM

IGNITION
COIL

SPARK PLUG

CYLINDER NO.

IGNITION 
SWITCH-ST

BATTERY

FAN CONTROL (RADIATOR, A/C CONDENSOR)

MULTIPORT FUEL SYSTEM (MFI) <2.4L ENGINE>

13A-8

FAN CONTROL (RADIATOR, A/C CONDENSOR)

M2132022500015

•

The powertrain control module (PCM) turns on 
the lower speed power transistor, so that the fan 
control relay is in ON position, and then the radia-
tor fan and A/C condenser fan motors rotate 
slowly. PCM turns on the higher speed power 
transistor, so that radiator fan and A/C condenser 
fan motors rotate highly.

•

PCM performs the rotation control for the radiator 
fan and A/C condenser fan motors corresponding 
to the engine coolant temperature and vehicle 
speed by controlling (both of the higher and lower 
speed) power transistor.

.

AK304054

IG2

ST

LOCK

ACC

IG1

R

M

M

CONDENSER
FAN RELAY

FAN CONTROL RELAY

IGNITION
SWITCH

POWERTRAIN CONTROL
MODULE (PCM)

RADIATOR 
FAN MOTOR

RADIATOR 
FAN RELAY

CONDENSER 
FAN MOTOR

(LOW SPEED
 SIDE)

(HIGH SPEED
 SIDE)

BATTERY

AB

OTHER CONTROL FUNCTIONS

MULTIPORT FUEL SYSTEM (MFI) <2.4L ENGINE>

13A-9

OTHER CONTROL FUNCTIONS

M2132010000228

The following items are basically the same as those 
for the 2.4L engine installed in the LANCER 
WAGON.

•

Valve Timing and Lift Switching Control

•

Power Supply and Fuel Pump Control

•

Generator Control

•

Heated Oxygen Sensor Heater Control

•

A/C Compressor Clutch Relay Control

•

EVAP Emission Control

•

EGR Control

ON-BOARD DIAGNOSTICS

M2132009000257

The powertrain control module (PCM) has been pro-
vided with the following functions for easier system 
inspection.

.

Diagnostic Trouble Codes and Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine 
Lamp) Function
The diagnostic trouble code and malfunction indicator lamp (SERVICE ENGINE SOON or Check Engine 
Lamp) items are shown in the following table.
NOTE: *1: Diagnostic Trouble Code
NOTE: *2: Malfunction Indicator Lamp 

DTC*

1

DIAGNOSTIC ITEM

MIL*

2

 ITEM

−

Powertrain control module (PCM) malfunction

×

P0101

Mass airflow circuit range/performance problem

×

P0102

Mass airflow circuit low input

×

P0103

Mass airflow circuit high input

×

P0106

Manifold absolute pressure circuit range/performance problem

×

P0107

Manifold absolute pressure circuit low input

×

P0108

Manifold absolute pressure circuit high input

×

P0111

Intake air temperature circuit range/performance problem

×

P0112

Intake air temperature circuit low input

×

P0113

Intake air temperature circuit high input

×

P0116

Engine coolant temperature circuit range/performance problem

×

P0117

Engine coolant temperature circuit low input

×

P0118

Engine coolant temperature circuit high input

×

P0122

Throttle position sensor (main) circuit low input

×

P0123

Throttle position sensor (main) circuit high input

×

P0125

Insufficient coolant temperature for closed loop fuel control

×

P0128

Coolant thermostat (Coolant temperature below thermostat regulating 
temperature)

×

P0130

Cylinder 1, 4 heated oxygen sensor circuit (sensor 1)

×

P0131

Cylinder 1, 4 heated oxygen sensor circuit low voltage (sensor 1)

×

P0132

Cylinder 1, 4 heated oxygen sensor circuit high voltage (sensor 1)

×

P0133

Cylinder 1, 4 heated oxygen sensor circuit slow response (sensor 1)

×

ON-BOARD DIAGNOSTICS

MULTIPORT FUEL SYSTEM (MFI) <2.4L ENGINE>

13A-10

P0134

Cylinder 1, 4 heated oxygen sensor circuit no activity detected (sensor 1)

×

P0135

Cylinder 1, 4 heated oxygen sensor heater circuit (sensor 1)

×

P0136

Cylinder 1, 4 heated oxygen sensor circuit (sensor 2)

×

P0137

Cylinder 1, 4 heated oxygen sensor circuit low voltage (sensor 2)

×

P0138

Cylinder 1, 4 heated oxygen sensor circuit high voltage (sensor 2)

×

P0139

Cylinder 1, 4 heated oxygen sensor circuit slow response (sensor 2)

×

P0141

Cylinder 1, 4 heated oxygen sensor heater circuit (sensor 2)

×

P0150

Cylinder 2, 3 heated oxygen sensor circuit (sensor 1)

×

P0151

Cylinder 2, 3 heated oxygen sensor circuit low voltage (sensor 1)

×

P0152

Cylinder 2, 3 heated oxygen sensor circuit high voltage (sensor 1)

×

P0153

Cylinder 2, 3 heated oxygen sensor circuit slow response (sensor 1)

×

P0154

Cylinder 2, 3 heated oxygen sensor circuit no activity detected (sensor 1)

×

P0155

Cylinder 2, 3 heated oxygen sensor heater circuit (sensor 1)

×

P0156

Cylinder 2, 3 heated oxygen sensor circuit (sensor 2)

×

P0157

Cylinder 2, 3 heated oxygen sensor circuit low voltage (sensor 2)

×

P0158

Cylinder 2, 3 heated oxygen sensor circuit high voltage (sensor 2)

×

P0159

Cylinder 2, 3 heated oxygen sensor circuit slow response (sensor 2)

×

P0161

Cylinder 2, 3 heated oxygen sensor heater circuit (sensor 2)

×

P0171

System too lean (cylinder 1, 4)

×

P0172

System too rich (cylinder 1, 4)

×

P0174

System too lean (cylinder 2, 3)

×

P0175

System too rich (cylinder 2, 3)

×

P0181

Fuel tank temperature sensor circuit range/performance

×

P0182

Fuel tank temperature sensor circuit low input

×

P0183

Fuel tank temperature sensor circuit high input

×

P0201

Injector circuit-cylinder 1

×

P0202

Injector circuit-cylinder 2

×

P0203

Injector circuit-cylinder 3

×

P0204

Injector circuit-cylinder 4

×

P0222

Throttle position sensor (sub) circuit low input

×

P0223

Throttle position sensor (sub) circuit high input

×

P0300

Random/multiple cylinder misfire detected

×

P0301

Cylinder 1 misfire detected

×

P0302

Cylinder 2 misfire detected

×

P0303

Cylinder 3 misfire detected

×

P0304

Cylinder 4 misfire detected

×

P0325

Knock sensor circuit

−

DTC*

1

DIAGNOSTIC ITEM

MIL*

2

 ITEM