Mitsubishi Montero (2004+). Manual — part 367

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-955

HO2S
BANK1
S1

39

Heated oxygen
sensor bank 1,
sensor 1 (right
front)

Engine:
Warming up
(Air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)

When the
engine is
running at
4,000 r/min,
decelerate
suddenly.

200 mV or
less

Code No.
P0130,
P0131,
P0132,
P0133,
P0134

P.13A-167

,

P.13A-184

,

P.13A-191

,

P.13A-196

,

P.13A-202

When engine
is suddenly
raced.

600

−

1,000 mV

Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the PCM.)

Engine is idling Voltage

changes
repeatedly
between
400 mV or
less and
600

−

1,000 mV.

2500 r/min

HO2S
BANK1
S1

A1*

5

Heated oxygen
sensor bank 1,
sensor 1 (right
front)

Engine:
Warming up
(Air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)

When the
engine is
running at
4,000 r/min,
decelerate
suddenly.

0.2 V or
less

When engine
is suddenly
raced.

0.6

− 1 V

Code No.
P0130,
P0131,
P0132,
P0133,
P0134

P.13A-167

,

P.13A-184

,

P.13A-191

,

P.13A-196

,

P.13A-202

Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the PCM.)

Engine is idling Voltage

changes
repeatedly
between
0.4 V or
less and
0.6

− 1 V.

2500 r/min

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-956

HO2S
BANK1
S2

69

Heated oxygen
sensor bank 1,
sensor 2 (right
rear)

Engine:
warming up

Revving

0 and 600
− 1,000 mV

alternate.

Code No.
P0136,
P0137,
P0138,
P0139

P.13A-222

,

P.13A-238

,

P.13A-245

,

P.13A-250

HO2S
BANK1
S2

A2*

5

Heated oxygen
sensor bank 1,
sensor 2 (right
rear)

Engine:
warming up

Revving

0 and 0.6

−

1 V
alternate.

Code No.
P0136,
P0137,
P0138,
P0139

P.13A-222

,

P.13A-238

,

P.13A-245

,

P.13A-250

HO2S
BANK2
S1

11

Heated oxygen
sensor bank 2,
sensor 1 (left
front)

Engine:
Warming up
(air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)

When the
engine is
running at
4000 r/min,
decelerate
suddenly.

200 mV or
less

When engine
is suddenly
raced.

600

−

1,000 mV

Code No.
P0150,
P0151,
P0152,
P0153,
P0154

P.13A-268

,

P.13A-284

,

P.13A-291

,

P.13A-296

,

P.13A-302

Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the PCM)

Engine is idling Voltage

changes
repeatedly
between
400 mV or
less and
600

−

1,000 mV.

2,500 r/min

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-957

HO2S
BANK2
S1

A3*

5

Heated oxygen
sensor bank 2,
sensor 1 (left
front)

Engine:
Warming up
(air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)

When the
engine is
running at
4,000 r/min,
decelerate
suddenly.

0.2 V or
less

When engine
is suddenly
raced.

0.6

− 1 V

Code No.
P0150,
P0151,
P0152,
P0153,
P0154

P.13A-268

,

P.13A-284

,

P.13A-291

,

P.13A-296

,

P.13A-302

Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the PCM)

Engine is idling Voltage

changes
repeatedly
between
0.4 V or
less and
0.6

− 1 V.

2500 r/min

HO2S
BANK2
S2

59

Heated oxygen
sensor bank 2,
sensor 2 (left
rear)

Engine:
warming up

Revving

0 and 600
− 1,000 mV

alternate.

Code No.
P0156,
P0157,
P0158,
P0159

P.13A-322

,

P.13A-338

,

P.13A-345

,

P.13A-350

HO2S
BANK2
S2

A4*

5

Heated oxygen
sensor bank 2,
sensor 2 (left
rear)

Engine:
warming up

Revving

0 and 0.6

−

1 V
alternate.

Code No.
P0156,
P0157,
P0158,
P0159

P.13A-322

,

P.13A-338

,

P.13A-345

,

P.13A-350

IAT
SENSOR

13

Intake air
temperature
sensor

Ignition switch:
"ON" or with
engine running

Intake air
temperature is
−20°C (−4°F)

−20°C

(

−4°F)

Code No.
P0111,
P0112,
P0113

P.13A-95

,

P.13A-102

,

P.13A-107

Intake air
temperature is
0

°C (32°F)

0

°C (32°F)

Intake air
temperature is
20

°C (68°F)

20

°C

(68

°F)

Intake air
temperature is
40

°C (104°F)

40

°C

(104

°F)

Intake air
temperature is
80

°C (176°F)

80

°C

(176

°F)

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-958

IAT
SENSOR

13*

5

Intake air
temperature
sensor

Ignition switch:
"ON" or with
engine running

Intake air
temperature is
−20°C (−4°F)

−20°C

(

−4°F)

Code No.
P0111,
P0112,
P0113

P.13A-95

,

P.13A-102

,

P.13A-107

Intake air
temperature is
0

°C (32°F)

0

°C (32°F)

Intake air
temperature is
20

°C (68°F)

20

°C

(68

°F)

Intake air
temperature is
40

°C (104°F)

40

°C

(104

°F)

Intake air
temperature is
80

°C (176°F)

80

°C

(176

°F)

IG.
TIMING
ADV

44

Ignition coils
and ignition
power
transistor

• Engine:

warming up

• Timing light

is set (to
check actual
ignition
timing)

Engine is idling 2

−18°

BTDC

−

−

2,500 r/min

27

− 47°

BTDC

IG.
TIMING
ADV

44*

5

Ignition coils
and ignition
power
transistor

• Engine:

warming up

• Timing light

is set (to
check actual
ignition
timing)

Engine is idling 2

− 18 deg −

−

2,500 r/min

27

− 47

deg

MUT-III
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPEC-
TION
PROCE-
DURE NO.

REFE-
RENCE
PAGE