Mitsubishi Montero (2004+). Manual — part 369

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-963

TANK
PRS.
SNSR

73

Fuel tank
differential
pressure
sensor

• Ignition switch: "ON"

• Fuel cap removal

−3.3 to 3.3

kPa
(

−0.97 to

0.97 in.Hg)

−

−

TP SNSR
(MAIN)

79

Throttle
position sensor
(main)*

4

• Remove the

intake air
hose at the
throttle body

• Disconnect

the throttle
position
sensor, and
then
connect
terminal
numbers
No. 1, No. 2,
No. 3 and
No. 4 with
the use of
the special
tool:
MB991658.

• Ignition

switch: ON

Fully close the
throttle valve
with your finger

200

− 800

mV

Code No.
P0122,
P0123

P.13A-138

,

P.13A-147

Fully open the
throttle valve
with your finger

3,800

−

4,900 mV

No load

450

−

1,000 mV

A/C switch: "OFF"

→ "ON"

Voltage
rises

• A/C switch: "OFF"

• Shift lever: "N" → "D"

TP
LEARN
MID

9A

Throttle
position sensor
(main)
mid opening
learning value

Ignition switch: ON

500

−

2,000 mV

Code No.
P0122,
P0123

P.13A-138

,

P.13A-147

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-964

TP SNSR
(SUB)

14

Throttle
position sensor
(sub)*

4

• Remove the

intake air
hose at the
throttle body

• Disconnect

the throttle
position
sensor, and
then
connect
terminal
numbers
No. 1, No. 2,
No. 3 and
No. 4 with
the use of
the special
tool:
MB991658.

• Ignition

switch: ON

Fully close the
throttle valve
with your finger

2,200

−

2,800 mV

Code No.
P0222,
P0223

P.13A-433

,

P.13A-442

Fully open the
throttle valve
with your finger

3,800

−

4,900 mV

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-965

TP SNSR 8A*

5

Throttle
position sensor
(main)*

4

• Remove the

intake air
hose at the
throttle body

• Disconnect

the throttle
position
sensor, and
then
connect
terminal
numbers
No. 1, No. 2,
No. 3 and
No. 4 with
the use of
the special
MB991658
tool.

• Ignition

switch: ON

Fully close the
throttle valve
with your finger

0

− 10 %

Code No.
P0122,
P0123

P.13A-138

,

P.13A-147

Fully open the
throttle valve
with your finger

80

− 100 %

No load

450

−

1,000 mV

A/C switch: "OFF"

→ "ON"

Voltage
rises

• A/C switch: "OFF"

• Shift lever: "N" → "D"

VAF
RESET
SIG

34

Volume airflow
sensor reset
signal

Engine:
warming up

Engine is idling ON

−

−

2,500 r/min

OFF

VAF
SENSOR

12

Volume airflow
sensor*

1

• Engine

coolant
temperature
: 80

− 95°C

(176

−

203

°F)

• Lights,

electric
cooling fan
and all
accessories
: "OFF"*

6

• Transmission

: "P" range

Engine is idling 17

− 43 HZ −

−

2,500 r/min

64

− 104

Hz

Engine is
revved

Frequency
(or air flow
volume)
increases
in
response
to revving

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-966

ACTUATOR TEST REFERENCE TABLE

M1131152500569

NOTE: *: Continues for 27 minutes. Can be released
by pressing the CLEAR key.

VAF
SENSOR

12*

5

Volume airflow
sensor (mass
airflow rate)*

1

• Engine

coolant
temperature
: 80

− 95°C

(176

−

203

°F)

• Lights,

electric
cooling fan
and all
accessories
: "OFF"*

6

• Transmission

: "P" range

Engine is idling 3.5

− 7.5

gm/s

−

−

2,500 r/min

13.6

− 19.6

gm/s)

Engine is
revved

Frequency
(or air flow
volume)
increases
in
response
to revving

VSS

24*

5

Vehicle speed
signal

Drive at 40 km/h (25 mph).

Approxi-
mately 40
km/h (25
mph)

−

−

MUT-III
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPEC-
TION
PROCE-
DURE NO.

REFE-
RENCE
PAGE

MUT-III
SCAN
TOOL
DIS-
PLAY

ITEM
NO.

INSPEC-
TION ITEM

DRIVE
CONTENTS

INSPECTION
REQUIREMENT

NORMAL
CONDITION

INSPEC-
TION
PROCEDU
RE NO.

REFERENCE
PAGE

BASIC
TIMING

17*

Basic
ignition
timing

Set to ignition
timing
adjustment
mode

• Engine: idling

• Connect timing light

5

°BTDC

−

−

EVAP
PURG
SOL

08

Evaporativ
e emission
purge
solenoid

Solenoid valve
turns from
OFF to ON.

Ignition switch: "ON"

Clicks when
solenoid valve
is driven.

Code No.
P0443

P.13A-540

EVAP
VENT

29

Evaporativ
e emission
ventila-
tion
solenoid

Solenoid valve
turns from
OFF to ON.

Ignition switch: "ON"

Clicks when
solenoid valve
is driven.

Code No.
P0446

P.13A-549