Mitsubishi Montero (2004+). Manual - part 366

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-951

APP SNS 
(MAIN)

78

Accelerator 
pedal position 
sensor (main)

Ignition switch: 
ON

Release the 
accelerator 
pedal

905 

− 

1,165 mV

Code No. 
P2121, 
P2122, 
P2123

P.13A-735

, 

P.13A-743

, 

P.13A-753

Depress the 
accelerator 
pedal gradually

Increases 
in 
response 
to the 
pedal 
depression 
stroke

Depress the 
accelerator 
pedal fully

4,035 mV 
or more

APP 
SNSR 
(SUB)

77

Accelerator 
pedal position 
sensor (sub)

Ignition switch: 
ON

Release the 
accelerator 
pedal

905 

− 

1,165 mV

Code No. 
P2126, 
P2127, 
P2128

P.13A-760

, 

P.13A-768

, 

P.13A-777

Depress the 
accelerator 
pedal gradually

Increases 
in 
response 
to the 
pedal 
depression 
stroke

Depress the 
accelerator 
pedal fully

4,035 mV 
or more

BARO 
SENSOR

25

Barometric 
pressure 
sensor

Ignition switch: 
"ON"

At altitude of 0 
m (0 ft)

101 kPa 
(29.8 
in.Hg)

Code No. 
P0106, 
P0107, 
P0108

P.13A-51

, 

P.13A-68

, 

P.13A-84

At altitude of 
600 m (1969 ft)

95 kPa 
(28.1 
in.Hg)

At altitude of 
1,200 m (3937 
ft)

88 kPa 
(26.0 
in.Hg)

At altitude of 
1,800 m (5906 
ft)

81 kPa 
(23.9 
in.Hg)

MUT-III 
SCAN 
TOOL 
DISPLAY

ITEM 
NO. 

INSPECTION 
ITEM

INSPECTION REQUIREMENT

NORMAL 
CONDITION

INSPEC-
TION 
PROCE-
DURE NO.

REFE-
RENCE 
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-952

BATT 
VOLTAGE

16

Battery voltage 
(power supply)

Ignition switch: "ON"

Battery 
positive 
voltage

Procedure 
No. 28

P.13A-908

CKP 
SENSOR

22

Crankshaft 
position sensor 
(engine speed) 

• Engine: cranking

• Tachometer: connected

Engine 
speeds 
displayed 
on the scan 
tool and 
tachometer 
are 
identical.

Code No. 
P0335

P.13A-467

Engine: idling

Engine coolant 
temperature is 
−20°C (−40°F)

1,300 

− 

1,500 r/min

Engine coolant 
temperature is 
0

°C (32°F)

1,300 

− 

1,500 r/min

Engine coolant 
temperature is 
20

°C (68°F)

1,300 

− 

1,500 r/min

Engine coolant 
temperature is 
40

°C (104°F)

1,040 

− 

1,240 r/min

Engine coolant 
temperature is 
80

°C (176°F)

600 

− 800 

r/min

CKP 
SENSOR 
2

38

Crankshaft 
position sensor

• Engine: cranking (at less 

than 2,000 r/min)

• Tachometer: connected

The 
speeds 
indicated 
by the scan 
tool and 
tachometer 
match.

Code No. 
P0335

P.13A-467

CRANK. 
SIGNAL

18

Crank signal 
(Ignition 
switch

−ST)

Ignition switch: 
"ON"

Engine: 
stopped

OFF

Procedure 
No. 30

P.13A-929

Engine: 
cranking

ON

MUT-III 
SCAN 
TOOL 
DISPLAY

ITEM 
NO. 

INSPECTION 
ITEM

INSPECTION REQUIREMENT

NORMAL 
CONDITION

INSPEC-
TION 
PROCE-
DURE NO.

REFE-
RENCE 
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-953

ECT 
SENSOR

21

Engine coolant 
temperature 
sensor

Ignition switch: 
"ON" or with 
engine running

Engine coolant 
temperature is 
−20°C (−4°F)

−20°C 

(

−4°F)

Code No. 
P0116, 
P0117, 
P0118

P.13A-114

, 

P.13A-125

, 

P.13A-130

Engine coolant 
temperature is 
0

°C (32°F)

0

°C (32°F)

Engine coolant 
temperature is 
20

°C (68°F)

20

°C 

(68

°F)

Engine coolant 
temperature is 
40

°C(104°F)

40

°C 

(104

°F)

Engine coolant 
temperature is 
80

°C (176°F)

80

°C 

(176

°F)

ECT 
SENSOR

21*

5

Engine coolant 
temperature 
sensor

Ignition switch: 
"ON" or with 
engine running

Engine coolant 
temperature is 
−20°C (−4°F)

−20°C 

(

−4°F)

Code No. 
P0116, 
P0117, 
P0118

P.13A-114

, 

P.13A-125

, 

P.13A-130

Engine coolant 
temperature is 
0

°C (32°F)

0

°C (32°F)

Engine coolant 
temperature is 
20

°C (68°F)

20

°C 

(68

°F)

Engine coolant 
temperature is 
40

°C (104°F)

40

°C 

(104

°F)

Engine coolant 
temperature is 
80

°C (176°F)

80

°C 

(176

°F)

EGR 
STEP. 
MTR.

68

EGR valve 
(stepper motor)

• Engine 

coolant 
temperature
:80 

− 95°C 

(176 

− 

203

°F)

• Lights and 

all  
accessories
: "OFF"*

6

• Transmission

:"P" range

Engine is idling 0 

− 5 STEP Code No. 

P0403

P.13A-504

2,500 r/min

0 

− 10 

STEP

MUT-III 
SCAN 
TOOL 
DISPLAY

ITEM 
NO. 

INSPECTION 
ITEM

INSPECTION REQUIREMENT

NORMAL 
CONDITION

INSPEC-
TION 
PROCE-
DURE NO.

REFE-
RENCE 
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-954

ENGINE 
LOAD

37

Engine load 
(volumetric 
efficiency)

• Engine 

coolant 
temperature
: 80 

− 95°C 

(176 

− 

203

°F)

• Lights, 

electric 
cooling fan 
and all 
accessories
: "OFF"*

6

• Transmission

: "P" range

Engine is idling 15 

− 35%

−

−

2,500 r/min

15 

− 35%

Racing

Volumetric 
efficiency 
increases 
according 
to amount 
of revving.

ENGINE 
LOAD 2

87*

5

Calculated 
load value

Engine: 
warming up

Engine is idling 12 

− 27%

−

−

2,500 r/min

12 

− 25%

ENGINE 
SPEED

22*

5

Crankshaft 
position sensor 
(engine speed) 
*

2

• Engine: cranking

• Tachometer: connected

Engine 
speeds 
displayed 
on the scan 
tool and 
tachometer 
are 
identical.

Code No. 
P0335

P.13A-467

Engine: idling

Engine coolant 
temperature is 
−20°C (−4°F)

1,300 

− 

1,500 r/min

Engine coolant 
temperature is 
0

°C (32°F)

1,300 

− 

1,500 r/min

Engine coolant 
temperature is 
20

°C (68°F)

1,300 

− 

1,500 r/min

Engine coolant 
temperature is 
40

°C (104°F)

1,040 

− 

1,240 r/min

Engine coolant 
temperature is 
80

°C (176°F)

600 

− 800 

r/min

FUEL 
TEMP

4A

Fuel tank 
temperature 
sensor

In cooled srateignittion  switch: 
"ON"

Approxi-
mately the 
same as 
the outdoor 
tempe-
rature

Code No. 
P0181, 
P0182, 
P0183

P.13A-396

, 

P.13A-406

, 

P.13A-412

MUT-III 
SCAN 
TOOL 
DISPLAY

ITEM 
NO. 

INSPECTION 
ITEM

INSPECTION REQUIREMENT

NORMAL 
CONDITION

INSPEC-
TION 
PROCE-
DURE NO.

REFE-
RENCE 
PAGE