Mitsubishi Outlander GS45X. Manual - part 755

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-843

37

Evaporative 
emission purge 
solenoid 

Ignition switch: "ON"

B+

Engine: warming up, 3,000 r/min (with 3 minutes 
after the engine starting sequence is completed)

Voltage drops

40

Heated oxygen 
sensor (rear)

• Transaxle: 2nd

• Drive with wide open throttle

• Engine: 3,500 r/min or more

1.0 

− 1.5 V

41

Heated oxygen 
sensor (rear) offset 
voltage

Ignition switch: "ON"

0.4 

− 0.6 V

44

Power supply 
voltage applied to 
manifold absolute 
pressure sensor

Ignition switch: "ON"

4.9 

− 5.1 V

45

Manifold absolute 
pressure sensor

Ignition switch: 
"ON"

At altitude of 0 m (0 ft.)

3.8 

− 4.2 V

At altitude of 600 m (1,969 
ft.)

3.5 

− 3.9 V

At altitude of 1,200 m (3,937 
ft.)

3.3 

− 3.7 V

At altitude of 1,800 m (5,906 
ft.)

3.0 

− 3.4 V

Engine: warming up, idling

0.6 

− 1.4 V

When engine is suddenly revved

Voltage varies

58

Power steering 
pressure switch

Engine: warming 
up, idling

When steering wheel is not 
turned

B+

When steering wheel is 
turned

1 V or less

60

Generator G 
terminal

• Engine: warming up, idling

• Radiator fan: stopped
• Headlight: OFF to ON*

2

• Stop light: OFF to ON

• Rear defogger switch: OFF to ON

Voltage increases

61

Generator FR 
terminal

• Engine: warming up, idling

• Radiator fan: stopped
• Headlight: OFF to ON*

2

• Stop light: OFF to ON

• Rear defogger switch: OFF to ON

Voltage drops

62

Generator L 
terminal

Ignition switch: "ON"

0.5 

− 2.0 V

Engine: idling

B+

72

Power supply 
voltage applied to 
throttle actuator 
control motor

Ignition switch: "ON"

B+

TERMINAL 
NO.

INSPECTION ITEM INSPECTION CONDITION (ENGINE 

CONDITION)

NORMAL 
CONDITION

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-844

73

MFI relay (power 
supply)

Ignition switch: "LOCK" (OFF)

B+

Ignition switch: "ON"

1 V or less

74

Accelerator pedal 
position sensor 
(main)

Ignition switch: 
"ON"

Release the accelerator 
pedal

0.9 

− 1.1 V

Depress the accelerator 
pedal fully

4 V or more

75

Power supply 
voltage applied to 
accelerator pedal 
position sensor 
(main)

Ignition switch: "ON"

4.9 

− 5.1 V

77

Accelerator pedal 
position sensor 
(sub)

Ignition switch: 
"ON"

Release the accelerator 
pedal

0.4 

− 0.6 V

Depress the accelerator 
pedal fully

2 V or more

78

Power supply 
voltage applied to 
accelerator pedal 
position sensor 
(sub)

Ignition switch: "ON"

4.9 

− 5.1 V

82

Power supply

Ignition switch: "ON"

B+

84

Throttle actuator 
control motor relay

Ignition switch: "ON" 

→ "LOCK" (OFF)

1 V or less 

→ B+ 

→ 1 V or less

87

Mass airflow sensor Engine is revved

Voltage increases 
in response to 
revving

89

Intake air 
temperature sensor

Ignition switch: 
"ON"

When intake air temperature 
is 

−20°C (−4°F)

3.8 

− 4.4 V

When intake air temperature 
is 0

°C (32°F)

3.2 

− 3.8 V

When intake air temperature 
is 20

°C (68°F)

2.3 

− 2.9 V

When intake air temperature 
is 40

°C (104°F)

1.5 

− 2.1 V

When intake air temperature 
is 60

°C (140°F)

0.8 

− 1.4 V

When intake air temperature 
is 80

°C (176°F)

0.4 

− 1.0 V

92

Ignition switch-IG

Ignition switch: "ON"

B+

96

Fuel pump relay

Ignition switch: "ON"

B+

Engine: idling

1.0 V or less

TERMINAL 
NO.

INSPECTION ITEM INSPECTION CONDITION (ENGINE 

CONDITION)

NORMAL 
CONDITION

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-845

98

Battery temperature 
sensor

Ignition switch: 
"ON"

When the intake air 
temperature is 

−20°C (−4°F)

3.8 

− 4.4 V

When the intake air 
temperature is 0

°C (32°F)

3.2 

− 3.8 V

When the intake air 
temperature is 20

°C (68°F)

2.3 

− 2.9 V

When the intake air 
temperature is 40

°C (104°F)

1.5 

− 2.1 V

When the intake air 
temperature is 60

°C (140°F)

0.8 

− 1.4 V

When the intake air 
temperature is 80

°C (176°F)

0.4 

− 1.0 V

100

Battery current 
sensor

The battery is being discharged.

• Engine: Cranking

The value changes 
by the value less 
than 3.5 V.

The battery is being charged.

• Leave the ignition switch being in the ON 

position for several minutes, and then after the 
engine start.

The value 
gradually 
increases from the 
value more than 
3.5 V*

3

102

A/C compressor 
clutch relay

• Engine: idling

• A/C switch: OFF → ON (A/C compressor is 

operating)

B+ 

→ 1 V or less 

as A/C clutch 
cycles

104

Backup power 
supply

Ignition switch: "LOCK" (OFF)

B+

105

Ignition switch-ST

Ignition switch: cranking

8 V or more

106

Starter relay

Engine: cranking

B+

Engine: idling

1 V or less

112

Fuel tank differential 
pressure sensor

• Ignition switch: "ON"

• Fuel cap removal

1.5 

− 3.5 V

114

Power supply 
voltage applied to 
fuel tank differential 
pressure sensor

Ignition switch: "ON"

4.9 

− 5.1 V

TERMINAL 
NO.

INSPECTION ITEM INSPECTION CONDITION (ENGINE 

CONDITION)

NORMAL 
CONDITION

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-846

115

Fuel tank 
temperature sensor

Ignition switch: 
"ON"

When fuel tank temperature 
is 0

°C (32°F)

2.7 

− 3.1 V

When fuel tank temperature 
is 20

°C (68°F)

2.1 

− 2.5 V

When fuel tank temperature 
is 40

°C (104°F)

1.6 

− 2.0 V

When fuel tank temperature 
is 80

°C (176°F)

0.8 

− 1.2 V

117

Evaporative 
emission ventilation 
solenoid

Ignition switch: "ON"

B+

Carry out the actuator test to drive the solenoid 
valve.

1 V or less 
(Approximately 6 
seconds)

TERMINAL 
NO.

INSPECTION ITEM INSPECTION CONDITION (ENGINE 

CONDITION)

NORMAL 
CONDITION