Mitsubishi Montero (2004+). Manual - part 371
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-971
98
Engine coolant
temperature
sensor
Ignition switch:
"ON"
When engine coolant
temperature is -20
°C (-4°F)
3.9
− 4.5 V
When engine coolant
temperature is 0
°C (32°F)
3.2
− 3.8 V
When engine coolant
temperature is 20
°C (68°F)
2.3
− 2.9 V
When engine coolant
temperature is 40
°C (104°F)
1.3
− 1.9 V
When engine coolant
temperature is 60
°C (140°F)
0.7
− 1.3 V
When engine coolant
temperature is 80
°C (176°F)
0.3
− 0.9 V
99
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
100
Barometric
pressure sensor
Ignition switch:
"ON"
When altitude is 0 m (0 ft)
3.7
− 4.3 V
When altitude is 600 m
(1,969 ft)
3.4
− 4.0 V
When altitude is 1,200 m
(3,937 ft)
3.2
− 3.8 V
When altitude is 1,800 m
(5,906 ft)
2.9
− 3.5 V
101
Manifold absolute
pressure sensor
Engine: idling
0.8
− 2.4 V
• Engine: idling
• Revving (momentary wide open throttle)
Rises from 0.8
−
2.4 V suddenly
106
Power supply
voltage applied to
throttle position
sensor
Ignition switch: ON
4.5
− 5.5 V
107
Accelerator pedal
position sensor
(sub)
Ignition switch: ON Release the accelerator
pedal
0.905
− 1.165 V
Depress the accelerator
pedal fully
4.035 V or more
108
Left bank heated
oxygen sensor
(front)
Engine: warming up, 2,500 r/min (check using a
digital voltmeter)
0
⇔ 0.8 V
(changes
repeatedly)
TERMINAL NO. INSPECTION
ITEM
INSPECTION CONDITION (ENGINE
CONDITION)
NORMAL
CONDITION