Mitsubishi Colt Ralliart. Manual - part 86

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-298

STEP 21. Check harness between B-141 (terminal 
No. 2) ignition switch connector and B-103 
(terminal No. 1) fuel pump relay (2) connector.

NOTE: Before checking harness, check intermediate 
connector B-129, and repair if necessary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 22 .

NO : 

Repair the damaged harness wire.

STEP 22. Connector check: A-08 engine-ECU 
connector or engine-CVT-ECU connector

AK402054

B-141

AC

Connector: B-141

1

2

3

4

5

6

B-141 Harness
side connector

AK402063

3

2

1

4

AC

B-103
J/B side
connector

Connector: B-103
J/B (front side)

B-103

AK402725

77

78

79

80

81

82

83

84

92

93

94

95

96

97

98

99

85

86

87

88

89

90

91

100

101

102

103

104

105

106

115

116

117

118

119

120

121

107

108

109

110

111

112

113

114

130

131

132

133

134

135

136

122

123

124

125

126

127

128

129

72 71

74 73

76 75

R

AG

A-08

Connector: 

A-08

Harness side connector

Battery

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

AK402063

3

2

1

4

AC

B-103
J/B side
connector

Connector: B-103
J/B (front side)

B-103

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-299

Q: Is the check result normal?

YES : 

Check intermediate connector B-110, and 

repair if necessary. If intermediate 
connector is normal, check and repair 
harness between A-08 (terminal No. 110) 
engine-ECU connector or engine-CVT-ECU 
connector and B-103 (terminal No. 2) fuel 
pump relay (2) connector.

• Check earthing line for damage.

NO : 

Repair or replace the connector.

STEP 23. Connector check: B-141 ignition switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 22 .

NO : 

Repair or replace the connector.

STEP 24. Check harness between B-141 (terminal 
No. 2) ignition switch connector and B-117 
(terminal No. 1) fuel pump relay (1) connector.

NOTE: Before checking harness, check intermediate 
connector B-129, and repair if necessary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 25 .

NO : 

Repair the damaged harness wire.

AK402054

B-141

AC

Connector: B-141

1

2

3

4

5

6

B-141 Harness
side connector

AK402054

B-141

AC

Connector: B-141

1

2

3

4

5

6

B-141 Harness
side connector

AK402062

3

2

1

4

AC

B-117
J/B side
connector

Connector: B-117
J/B (front side)

B-117

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-300

STEP 25. Check harness between battery and 
B-117 (terminal No. 3) fuel pump relay (1) 
connector.

NOTE: Before checking harness, check intermediate 
connector B-108, and repair if necessary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 26 .

NO : 

Repair the damaged harness wire.

STEP 26. Check harness between B-117 (terminal 
No. 4) fuel pump relay (1) connector and B-103 
(terminal No. 3) fuel pump relay (2) connector.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 27 .

NO : 

Repair the damaged harness wire.

AK402062

3

2

1

4

AC

B-117
J/B side
connector

Connector: B-117
J/B (front side)

B-117

AK402061

3

2

1

4

AC

B-103, B-117
J/B side 
connector

Connector: B-103, B-117
J/B (front side)

B-117

B-103

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-301

STEP 27. Check harness between B-103 (terminal 
No. 4) fuel pump relay (2) connector and C-16 
(terminal No. 5) fuel pump connector.

NOTE: Before checking harness, check intermediate 
connectors B-128, and repair if necessary.

• Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 28 .

NO : 

Repair the damaged harness wire.

STEP 28. Check harness between C-16 (terminal 
No. 4) fuel pump connector and body earth.

• Check earthing line for damage.

Q: Is the check result normal?

YES : 

Replace fuel pump.

NO : 

Repair the damaged harness wire.

AK402063

3

2

1

4

AC

B-103
J/B side
connector

Connector: B-103
J/B (front side)

B-103

AK402064

1

2

3

4

5

AC

Connector: C-16

C-16

C-16 Harness side

connector

AK402064

1

2

3

4

5

AC

Connector: C-16

C-16

C-16 Harness side

connector

Main

Index

Group

TOC