Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 188

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-451

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

FUEL
PUMP

07

Fuel pump

Fuel pump
operates and
fuel is
recirculated

•

Engine:
cranking

•

Fuel
pump:
activate
d

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-416

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

Sound of
operation is
heard

BASIC
TIMING

17*

Basic
ignition
timing

Set to ignition
timing
adjustment
mode

•

Engine: idling

•

Connect timing light

5

°

BTDC

-

-

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-161

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

04Cut 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-406

MUT-II
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

DRIVE
CONTENTS

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-452

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

M1131027400017

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 V

momentarily
drops slightly

149

No.2 injector

2

24No.3 injector

15

2

No.4 injector

414

Stepper motor coil
<A1>

•

Engine: warming up, idling

•

A/C switch: OFF

→

ON

•

Headlight switch: OFF

→

ON

B+

⇔

1 V 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 solenoid

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

34Evaporative

emission purge
solenoid

Ignition switch: "ON"

B+

Engine: warm up, 3,000 r/min

3

−

13 V

10

11

Ignition coil

−

No.1,

No.4 (Ignition
power transistor)

Engine: 3,000 r/min

0.3

−

3.0 V

23

12

Ignition coil

−

No.2,

No.3 (Ignition
power transistor)

12

41

Power supply

Ignition switch: "ON"

B+

25

47

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-453

19

19

Volume air flow
sensor reset signal

Engine: idling

0

−

1 V

Engine: 3,000 r/min

6

−

9 V

21

18

Fan controller

Radiator fan and condenser fan are not
operating

0

−

0.3V

Radiator fan and condenser fan are
operating

0.7 V or more

22

21

Fuel pump relay

Ignition switch: "ON"

B+

Engine: idling

1 V or less

2461

A/C switch 2

Engine: idling
Outside air
temperature:
25

°

C or more

when A/C is MAX. COOL
condition (when the load
by A/C is high)

1 V or less

when A/C is MAX. HOT
condition (when the load
by A/C is low)

B+

33

8

Generator G
terminal

Engine: warming up, idling (radiator fan:
stopped)
Headlight: OFF to ON
Rear defogger switch: OFF to ON
Stoplight switch: OFF to ON

Voltage rises by
0.2

−

3.5 V

36

22

Check engine/
malfunction
indicator lamp

Ignition switch: "LOCK" (OFF)

→

"ON"

1 V or less

→

9

−

13 V (after

several seconds
have elapsed)

37

52

Power steering
pressure switch

Engine: warming
up, idling

When steering wheel is
stationary

B+

When steering wheel is
turned

1V or less

38

49

MFI relay (power
supply)

Ignition switch: "OFF"

B+

Ignition switch: "ON"

1V or less

41

54

Generator FR
terminal

Engine: warming up, idling (radiator fan:
stopped) Headlight: OFF to ON

Voltage drops

Rear defogger switch: OFF to ON Stop light
switch: OFF to ON

45

83

A/C switch

Engine: idling

Turn the A/C switch OFF

1V or less

Turn the A/C switch ON
(A/C compressor is
operating)

B+

5426

Heated oxygen
sensor heater
(rear)

Engine: warming up, idling

1 V or less

Engine: Revving

B+

55

35

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

TERMINAL
NO. <M/T>

TERMINAL
NO. <A/T>

INSPECTION ITEM

INSPECTION CONDITION (ENGINE CONDITION)

NORMAL
CONDITION

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-454

58

43

Engine ignition
signal

Engine: 3,000 r/min

0.3

−

3.0 V

60

3

Heated oxygen
sensor heater
(front)

Engine: warming up, idling

9

−

11 V

Engine: Revving

9

−

11 V

→

B+

(momentarily)

61

92

Fuel tank
differential
pressure sensor

Engine: idling

1.2

−

3.8 V

71

58

Ignition switch-ST

Engine: cranking

8 V or more

72

64Intake air

temperature
sensor

Ignition switch:
"ON"

When Intake air
temperature is 0

°

C (32

°

F)

3.2

−

3.8 V

When Intake air
temperature is 20

°

C

(68

°

F)

2.3

−

2.9 V

When Intake air
temperature is 40

°

C

(104

°

F)

1.5

−

2.1 V

When Intake air
temperature is 80

°

C

(176

°

F)

0.4

−

1.0 V

73

91

Manifold
differential
pressure sensor

Engine: idling

0.8

−

2.4 V

•

Engine: idling

•

Suddenly depress the accelerator pedal

Rises from 0.8

−

2.4 V suddenly

75

73

Heated oxygen
sensor (rear)

•

Engine: warming up

•

Revving

0 and 0.6

−

1.0 V

alternates

76

71

Heated oxygen
sensor (front)

•

Engine: warming, 2,500 r/min (check
using a digital type voltmeter)

0

⇔

0.8 V

(changes
repeatedly)

80

66

Backup power
supply

Ignition switch: "LOCK" (OFF)

B+

81

46

Sensor supplied
voltage

Ignition switch: "ON"

4.5

−

5.5 V

82

98

Ignition switch-IG

Ignition switch: "ON"

B+

83

44

Engine coolant
temperature
sensor

Ignition switch:
"ON"

When engine coolant
temperature is 0

°

C (32

°

F)

3.2

−

3.8 V

When engine coolant
temperature is 20

°

C

(68

°

F)

2.3

−

2.9 V

When engine coolant
temperature is 40

°

C

(104

°

F)

1.3

−

1.9 V

When engine coolant
temperature is 80

°

C

(176

°

F)

0.3

−

0.9 V

TERMINAL
NO. <M/T>

TERMINAL
NO. <A/T>

INSPECTION ITEM

INSPECTION CONDITION (ENGINE CONDITION)

NORMAL
CONDITION