Mitsubishi Eclipse. Manual — part 352

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-901

MAP/MD
P SNSR.

32

*6

Manifold
absolute
pressure
sensor

• Engine:

coolant
temperature
: 80

− 90°C

(176

−

203

°F)

• Lights,

electric
cooling fan
and all
accessories
: OFF

• Transaxle:

Neutral
(A/T: P
range)

• Ignition

switch: ON

Engine stopped
[At altitude of 0 m
(0 ft.)]

101 kPa (29.8
in.Hg)

Code No.
P0106, P0107,
P0108

P.13A-53

,

P.13A-68

,

P.13A-89

Engine stopped
[At altitude of 600
m (1,969 ft.)]

95 kPa (28.1
in.Hg)

Engine stopped
[At altitude of
1,200 m (3,937
ft.)]

88 kPa (26.0
in.Hg)

Engine stopped
[At altitude of
1,800 m (5,906
ft.)]

81 kPa (23.9
in.Hg)

Engine: Idling

16

− 36 kPa

(4.7

− 10.6

in.Hg)

When engine is
suddenly raced

Varies

PSP
SWITCH

27

Power
steering
pressure
switch

Engine: idling

Steering wheel
stationary

OFF

Code No.
P0551

P.13A-655

Steering wheel
turning

ON

SHORT
TRIM B1

82

*6

Short-Term
Fuel Trim
(trim)

Engine: warming up, 2,500 r/min
without any load (during closed
loop)

−25 − 16.8 %

Code No.
P0171, P0172

P.13A-328

,

P.13A-337

SYS.
STATUS
B1

88

*6

Fuel control
system status

Engine:
warming up

2,500 r/min

Closed loop

−

−

When engine is
suddenly revved

Open loop

−

drive condition

TANK
PRS.
SNSR

73

Fuel tank
differential
pressure
sensor

• Ignition switch: "ON"

• Fuel tank filler tube cap

removal

−3.3 − 3.3 kPa −

−

TP
SENSOR

14

Throttle
position
sensor

Ignition switch:
"ON"

Set to idle
position

535

− 735

millivolts

Code No.
P0121, P0122,
P0123

P.13A-164

,

P.13A-178

,

P.13A-189

Gradually open

Increases in
proportion to
throttle
opening angle

Open fully

4,500

− 5,500

millivolts

TP
SENSOR

8A

*6

Throttle
position
sensor

Ignition switch:
"ON"

Set to idle
position

6

− 20 %

Code No.
P0121, P0122,
P0123

P.13A-164

,

P.13A-178

,

P.13A-189

Gradually open

Increases in
proportion to
throttle
opening angle

Open fully

80

− 100 %

MUT-III
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-902

VAF
RESET
SIG

34

Volume airflow
sensor reset
signal

Engine:
warming up

Engine is iding

ON

−

−

2,500 r/min

OFF

VAF
SENSOR

12

Volume airflow
sensor (mass
airflow rate)

*5

• Engine

coolant
temperature
: 80

− 95°C

(176

−

203

°F)

• Lights,

electric
cooling fan
and all
accessories
: OFF

• Transaxle:

neutral (A/T:
"P" range)

Engine is idling

12

− 38 Hz

−

−

2,500 r/min

55

− 95 Hz

Engine is revved Frequency (or

air flow
volume)
increases in
response to
revving

VAF/MAF
SNSR.

12

*6

Volume airflow
sensor (mass
airflow rate)

*5

• Engine

coolant
temperature
: 80

− 95°C

(176

−

203

°F)

• Lights,

electric
cooling fan
and all
accessories
: OFF

• Transaxle:

neutral (A/T:
"P" range)

Engine is idling

1.7

− 4.2 gm/s −

−

2,500 r/min

7.9

− 12.1 gm/s

Engine is revved Frequency (or

air flow
volume)
increases in
response to
revving

VSS

24

*6

Vehicle speed
sensor <M/T>

Drive at 40 km/h (25 mph).

Approximately
40 km/h (25
mph)

Code No.
P0500

P.13A-612

MUT-III
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-903

ACTUATOR TEST REFERENCE TABLE

M1131152500484

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

MUT-III
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

DRIVE
CONTENTS

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDUR
E NO.

REFERENCE
PAGE

BASIC
TIMING

17*

Basic
ignition
timing

Set to ignition
timing
adjustment
mode

• Engine: idling

• Connect timing light

5

° BTDC

−

−

EGR
SOLEN
OID

10

EGR
vacuum
regulator
solenoid
valve

Solenoid valve
turns from
OFF to ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven.

Code No.
P0403

P.13A-45
3

EVAP
PURGE
SOL

08

Evaporative
emission
purge
solenoid

Solenoid valve
turns from
OFF to ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven.

Code No.
P0443

P.13A-49
0

EVAP
VENT

29

Evaporative
emission
ventilation
solenoid

Solenoid valve
turns from
OFF to ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven.

Code No.
P0446

P.13A-50
4

FUEL
PUMP

07

Fuel pump

Fuel pump
operates and
fuel is
recirculated

• Engine:

cranking

• Fuel pump:

activated

Inspect
according to
both the above
conditions

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

Pulse is felt

Procedure
No. 30

P.13A-85
3

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

Sound of
operation is
heard

NO. 1
INJECT
OR

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

P.13A-37
7

NO. 2
INJECT
OR

02

Cut fuel to No.
2 injector

NO. 3
INJECT
OR

03

Cut fuel to No.
3 injector

NO. 4
INJECT
OR

04

Cut fuel to No.
4 injector

RADIAT.
FAN LO

21

Fan
controller

Drive the fan
motor

Ignition switch: "ON"

Radiator fan
and
condenser
fan rotate at
high speed

Procedure
No. 28

P.13A-83
0

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-904

CHECK AT THE ENGINE CONTROL MODULE (ECU) <M/T> OR POWERTRAIN
CONTROL MODULE (PCM) <A/T>

M1131153700209

TERMINAL VOLTAGE CHECK CHART

AK000056

ECM <M/T> or PCM <A/T> Connector Terminal Arrangement

AB

<M/T>

<A/T>

1

2

3

4

5

6

7

8

1

9

10

11 12 13 14 15 16 17 18 19 20 21 22 23

35

58

47

41

59

48

60

50

61

51

62

52

63

64

53 54

42

49

43

55

44

65

56

45

66

57

46

90

78

71

91

79

72

92

81

93

82

94

83

95

85

96

86

84

74

97

88

76

98

89

77

101

108

121

102

109

103

111

122

104

112

124

105

118

106

119

129

107

120

130

113114

125

115

126

116

127

117

128

110

123

87

75

80

73

34

33

32

31

30

29

28

27

26

25

24

2

3

4

5

6

7

8

9 10 11 12 13

31 32 33 34 35 36 37 38

51

57 58 59 60 61 62

82 83 84 85 86 87 88 89 90 91 92

52 53 54 55 56

71 72 73 74 75 76 77 78 79 80 81

46

45

44

43

42

41

40

39

14 15 16 17 18 19 20 21 22 23 24 25 26

TERMINAL
NO. <M/T>

TERMINAL
NO. <A/T>

INSPECTION ITEM INSPECTION CONDITION (ENGINE CONDITION) NORMAL

CONDITION

1

1

No.1 injector

• Engine: warming up, idling

• Suddenly depress the accelerator pedal

From 11

− 14

volts
momentarily
drops slightly

14

9

No.2 injector

2

24

No.3 injector

15

2

No.4 injector

4

14

Stepper motor coil
<A1>

• Engine: warming up, idling

• A/C switch: OFF → ON

• Headlight switch: OFF → ON

B+

⇔ 1 volt or

less (changes
repeatedly)

17

28

Stepper motor coil
<A2>

5

15

Stepper motor coil
<B1>

18

29

Stepper motor coil
<B2>

6

6

EGR vacuum
regulator solenoid
valve

Ignition switch: "ON"

B+

• Engine: idling

• Suddenly depress the accelerator pedal.

From B+,
momentarily
drops

8

20

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

9

34

Evaporative
emission purge
solenoid

Ignition switch: "ON"

B+

Engine: warm up, 3,000 r/min

3

− 13 volts

10

11

Ignition coil

− No.

1, No. 4 (Ignition
power transistor)

Engine: 3,000 r/min

0.3

− 3.0 volts

23

12

Ignition coil

− No.

2, No. 3 (Ignition
power transistor)

12

41

Power supply

Ignition switch: "ON"

B+

25

47