Mitsubishi Eclipse. Manual — part 353

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-905

19

19

Volume airflow
sensor reset
signal

Engine: idling

0

− 1 volt

Engine: 3,000 r/min

6

− 9 volts

21

18

Fan controller

Radiator fan and condenser fan are not
operating

0

− 0.3 volt

Radiator fan and condenser fan are operating 0.7 volt or more

22

21

Fuel pump relay

Ignition switch: "ON"

B+

Engine: idling

1 volt or less

24

61

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 volt 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 volts

36

22

Malfunction
Indicator Lamp
(SERVICE
ENGINE SOON
or Check Engine
Lamp)

Ignition switch: "LOCK" (OFF)

→ "ON"

1 volt or less

→

9

− 13 volts

(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

1 volt or less

38

49

MFI relay (power
supply)

Ignition switch: "OFF"

B+

Ignition switch: "ON"

1 volt 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

1 volt or less

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

B+

54

26

Heated oxygen
sensor heater
(rear)

Engine: warming up, idling

1 volt or less

Engine: Revving

B+

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>

13A-906

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
volt or less

58

43

Tachometer
signal

Engine: 3,000 r/min

0.3

− 3.0 volt

60

3

Heated oxygen
sensor heater
(front)

Engine: warming up, idling

9

− 11 volts

Engine: Revving

9

− 11 volts →

B+
(momentarily)

61

92

Fuel tank
differential
pressure sensor

Engine: idling

1.2

− 3.8 volts

71

58

Ignition switch-ST Engine: cranking

8 V or more

72

64

Intake air
temperature
sensor

Ignition switch:
"ON"

When Intake air
temperature is

−20°C

(

−4°F)

3.8

− 4.4 volts

When Intake air
temperature is 0

°C (32°F)

3.2

− 3.8 volts

When Intake air
temperature is 20

°C (68°F)

2.3

− 2.9 volts

When Intake air
temperature is 40

°C

(104

°F)

1.5

− 2.1 volts

When Intake air
temperature is 60

°C

(140

°F)

0.8

− 1.4 volts

When Intake air
temperature is 80

°C

(176

°F)

0.4

− 1.0 volt

73

91

Manifold absolute
pressure sensor

Ignition switch:
ON

When altitude is 0m (0 ft.)

3.8

− 4.2 volts

When altitude is 600m
(1,969 ft.)

3.5

− 3.9 volts

When altitude is 1,200m
(3,937 ft.)

3.3

− 3.7 volts

When altitude is 1,800m
(5,906 ft.)

3.0

− 3.4 volts

Engine: idling

0.8

− 4.2 volts

While engine is idling after having warmed up,
suddenly depress the accelerator pedal

Vries

75

73

Heated oxygen
sensor (rear)

• Engine: warming up

• Revving

0 and 0.6

− 1.0

volt alternates

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>

13A-907

76

71

Heated oxygen
sensor (front)

• Engine: warming, 2,500 r/min (check using

a digital type voltmeter)

0

⇔ 0.8 volt

(changes
repeatedly)

77

51

Fuel tank
temperature
sensor

Ignition switch:
"ON"

When fuel tank
temperature is 0

°C (32°F)

2.7

− 3.1 volts

When fuel tank
temperature is 20

°C (68°F)

2.1

− 2.5 volts

When fuel tank
temperature is 40

°C

(104

°F)

1.6

− 2.0 volts

When fuel tank
temperature is 80

°C

(176

°F)

0.8

− 1.2 volts

80

66

Backup power
supply

Ignition switch: "LOCK" (OFF)

B+

81

46

Sensor supplied
voltage

Ignition switch: "ON"

4.5

− 5.5 volts

82

98

Ignition switch-IG Ignition switch: "ON"

B+

83

44

Engine coolant
temperature
sensor

Ignition switch:
"ON"

When engine coolant
temperature is

−20°C

(

−4°F)

3.9

− 4.5 volts

When engine coolant
temperature is 0

°C (32°F)

3.2

− 3.8 volts

When engine coolant
temperature is 20

°C (68°F)

2.3

− 2.9 volts

When engine coolant
temperature is 40

°C

(104

°F)

1.3

− 1.9 volts

When engine coolant
temperature is 60

°C

(140

°F)

0.7

− 1.3 volts

When engine coolant
temperature is 80

°C

(176

°F)

0.3

− 0.9 volt

84

78

Throttle position
sensor

Ignition switch:
"ON" (check for
smooth voltage
increase as
throttle is moved
from idle position
to wide open
throttle)

Idle

0.335

− 0.935

volt

Wide open throttle

4.4

− 5.3 volts

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>

13A-908

TERMINAL RESISTANCE AND CONTINUITY CHECK

85

55

Barometric
pressure sensor

Ignition switch:
"ON"

When altitude is 0 m (0 ft)

3.7

− 4.3 volts

When altitude is 600 m
(1,969 ft)

3.4

− 4.0 volts

When altitude is 1,200 m
(3,937 ft)

3.2

− 3.8 volts

When altitude is 1,800 m
(5,906 ft)

2.9

− 3.5 volts

86

−

Vehicle speed
sensor

• Ignition switch: "ON"

• Move the vehicle slowly forward

0

⇔ 8 − 12

volts (changes
repeatedly)

87

79

Idle position
signal

Ignition switch:
"ON"

Set throttle valve to idle
position

0

− 1 volt

Open throttle slightly

4 volts or more

88

56

Camshaft position
sensor

Engine: cranking

0.4

− 3.0 volts

Engine: idling

1.5

− 3.0 volts

89

45

Crankshaft
position sensor

Engine: cranking

0.4

− 4.0 volts

Engine: idling

1.5

− 2.5 volts

90

65

Volume airflow
sensor

Engine: idling

2.2

− 3.2 volts

Engine: 2,500 r/min

TERMINAL
NO. <M/T>

TERMINAL
NO. <A/T>

INSPECTION ITEM INSPECTION CONDITION (ENGINE CONDITION) NORMAL

CONDITION

AK000058

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

AB

<M/T>

<A/T>

13 12 11 10

9

8

7

6

5

4

3

2

1

26 25 24 23 22 21 20 19

38 37 36

35 34

33 32 31

35 34 33 32 31

46 45 44 43 42 41

56 55 54 53 52 51

62 61 60 59 58

75 74 73 72 71

80

81

79 78 77 76

86 85 84 83 82

91

92

90 89 88 87

57

40 39

18 17 16 15 14

13 12 11 10

9

8

7

6

5

4

3

2

1

26

27

28

29

30

25

24

23

58

59

60

61

62

63

64

65

66

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

90

91

92

93

94

95

96

97

98

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

101

102

103

104

105

106

107

108

121

122

123

124

125

126

127

128

129

130

109

110

111

112

113

114

115

116

117

118

119

120

22 21 20 19 18 17 16

14

15

TERMINAL
NO.

TERMINAL
NO.

INSPECTION ITEM

NORMAL CONDITION (INSPECTION
CONDITION)

1

− 12

1

− 41

No. 1 injector

13

− 16 ohms [at 20°C (68°F)]

14

− 12

9

− 41

No. 2 injector

2

− 12

24

− 41

No. 3 injector

15

− 12

2

− 41

No. 4 injector

4

− 12

14

− 41

Stepper motor coil (A1)

28

− 33 ohms [at 20°C (68°F)]

17

− 12

28

− 41

Stepper motor coil (A2)

5

− 12

15

− 41

Stepper motor coil (B1)

18

− 12

29

− 41

Stepper motor coil (B2)

6

− 12

6

− 41

EGR vacuum regulator solenoid valve 29

− 35 ohms [at 20°C (68°F)]