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

 

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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"

− 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)

− 11 V

Engine: Revving

− 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)

− 11 V

Engine: Revving

− 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

− 9 V

38

Accelerator pedal 
position switch

Ignition switch: 
"ON" 

closed throttle

− 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

 

 

 

 

 

 

 

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