Mitsubishi Montero (2002-2004). Manual — part 571

DATA LIST REFERENCE TABLE

TSB Revision

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

13Ab-41

VAF
SENSOR

12

Volume airflow
sensor (mass
airflow rate)*

1

• Engine

coolant
temperature
: 80

− 95°C

(176

−

203

°F)

• Lights,

electric
cooling fan
and all
accessories
: "OFF"

• 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

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"

• 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

MUT-II
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

ACTUATOR TEST REFERENCE TABLE

TSB Revision

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

13Ab-42

ACTUATOR TEST REFERENCE TABLE

M1131152500246

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

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

DRIVE
CONTENTS

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFE-
RENCE
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.13Ac
-419

EVAP
VENT

29

Evaporativ
e emission
ventilation
solenoid

Solenoid
valve turns
from OFF to
ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven.

Code No.
P0446

P.13Ac
-427

FUEL
PUMP

07

Fuel pump Fuel pump

operates and
fuel is
recirculated

Ignition switch:
"ON"

Pinch the
return hose
with fingers to
feel the pulse
of the fuel
being
recirculated

Pulse is felt

Procedure
No. 29

P.13Ad
-85

Listen near the
fuel tank for
the sound of
fuel pump
operation

Sound of
operation is
heard

INT. AIR
MTR

11

Intake
manifold
tuning

Solenoid
valve turns
from OFF to
ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven

Code No.
P0660

P.13Ac
-549

NO. 1
INJECTOR

01

Injectors

Cut fuel to
No. 1 injector

Engine: warm, idle (cut the fuel
supply to each injector in turn
and check cylinders which
don't affect idling.)

Idling
condition
becomes
different
(becomes
unstable)

Code No.
P0201,
P0202,
P0203,
P0204,
P0205,
P0206

P.13Ac
-318

NO. 2
INJECTOR

02

Cut fuel to
No. 2 injector

NO. 3
INJECTOR

03

Cut fuel to
No. 3 injector

NO. 4
INJECTOR

04

Cut fuel to
No. 4 injector

NO. 5
INJECTOR

05

Cut fuel to
No. 5 injector

NO. 6
INJECTOR

06

Cut fuel to
No. 6 injector

RADIAT.
FAN LO

21

A/C
condenser
fan

Drive the fan
motor

Ignition switch: "ON"

A/C
condenser
fan rotate

Procedure
No. 27

P.13Ad
-73

CHECK AT THE POWERTRAIN CONTROL MODULE (PCM)

TSB Revision

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

13Ab-43

CHECK AT THE POWERTRAIN CONTROL MODULE (PCM)

M1131153600138

TERMINAL VOLTAGE CHECK CHART

AK201354

1

2

3

5

6 7 8 9

4

20

21 22

232425

2627

10111213

14 15

16 1718

19

31

35363738394041 42 43
444546474849

50 51

5253

545556

57 58

32

33 34 61

656667686970 717273
74757677787980 8182
8384

858687

8889

62

6364 9192

939495

96979899

100

105

113114

115116117

118119120

106

107108109

110111112

101102103

104

121122

123 124

125126127128129 130 131 132 133

134135

136137 138 139 140 141

142143

144

145 146

PCM Connector Terminal Arrangement

AB

TERMINAL NO. INSPECTION

ITEM

INSPECTION CONDITION (ENGINE
CONDITION)

NORMAL
CONDITION

1

No. 1 injector

• Engine: warming up, idling

• Suddenly depress the accelerator pedal

From 11

− 14 V

momentarily
drops slightly

5

No. 2 injector

14

No. 3 injector

21

No. 4 injector

2

No. 5 injector

6

No. 6 injector

3

EGR valve
(Stepper motor coil
<A1>)

Ignition switch: "OFF"

→ "ON"

5

− 8 V (changes

about three
seconds
repeatedly)

12

EGR valve
(Stepper motor coil
<A2>)

19

EGR valve
(Stepper motor coil
<B1>)

26

EGR valve
(Stepper motor coil
<B2>)

4

Intake manifold
tuning solenoid

Engine: idling

1 V or less

Engine: 4,500 r/min

B+

7

Malfunction
indicator lamp
(SERVICE
ENGINE SOON or
check engine
lamp)

Ignition switch: "OFF"

→ "ON"

1 V or less

→ 9 −

13 V (after
several seconds
have elapsed)

8

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

10

Left bank heated
oxygen sensor
heater (front)

Engine: warming up, idling (15 seconds after
starting engine)

9

− 11 V

Engine: Revving

9

− 11 V → B+

(momentarily)

CHECK AT THE POWERTRAIN CONTROL MODULE (PCM)

TSB Revision

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

13Ab-44

11

Evaporative
emission
ventilation solenoid

Ignition switch: "ON"

B+

Carry out the actuator test to drive the solenoid
valve.

For
approximately
Six seconds 1 V
or less

15

Throttle actuator
control motor relay

Ignition switch: "OFF"

B+

Ignition switch: "ON"

1 V or less

16

Fuel pump relay

Ignition switch: "ON"

B+

Engine: idling

1 V or less

17

Condenser fan
relay

Condenser fan is not operating

B+

Condenser fan is running operating

1 V or less

18

Left bank heated
oxygen sensor
heater (rear)

Engine: warming up, idling

1 V or less

Engine: Revving

B+

23

Evaporative
emission purge
solenoid

Ignition switch: "ON"

B+

Engine: warm, 3,000 r/min (duty cycle)

Approximately 9
V

24

Right bank heated
oxygen sensor
heater (rear)

Engine: warming up, idling

1 V or less

Engine: Revving

B+

25

Right bank heated
oxygen sensor
heater (front)

Engine: warming up, idling (15 seconds after
starting engine)

9

− 11 V

Engine: Revving

9

− 11 V → B+

(momentarily)

31

Ignition coil

− No.

1, No. 4 (ignition
power transistor)

Engine: 3,000 r/min

0.3

− 3.0 V

35

Ignition coil

− No.

2, No. 5 (ignition
power transistor)

44

Ignition coil

− No.

3, No. 6 (ignition
power transistor)

34

Power supply

Ignition switch: "ON"

B+

43
34

Volume airflow
sensor reset signal

Engine: idling

1 V or less

Engine: 3,000 r/min

6

− 9 V

38

Accelerator pedal
position switch

Ignition switch:
"ON"

closed throttle

0

− 1 V

Open throttle slightly

4 V or more

47

Power steering
pressure switch

Engine: warming
up, idling

When steering wheel is
stationary

B+

When steering wheel is
turned

1V or less

50

Ignition switch-IG

Ignition switch: "ON"

B+

TERMINAL NO. INSPECTION

ITEM

INSPECTION CONDITION (ENGINE
CONDITION)

NORMAL
CONDITION