Mitsubishi Colt Ralliart. Manual - part 746

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-309

STEP 12. Check harness between battery and 
B-127 (terminal No. 3) cooling fan control relay 
(HI) 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 13 .

NO : 

Repair.

STEP 13. Check harness between B-141 (terminal 
No. 4) ignition switch connector and B-114 
(terminal No. 1) cooling fan control relay (LO) 
connector.

NOTE: Before checking harness, check intermediate 
connector B-130 and repair if necessary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 14 .

NO : 

Repair.

3

2

1

4

AK402107

J/B side 
connector

Connector: B-127
J/B (front side)

AC

B-127

1

2

3

4

5

6

AK402103

Connector: B-141

Harness side 
connector

B-141

AC

AK402106

3

2

1

4

AC

Connector: B-114

J/B side 
connector

B-114

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-310

STEP 14. Check harness between B-141 (terminal 
No. 4) ignition switch connector and B-127 
(terminal No. 1) cooling fan control relay (HI) 
connector.

NOTE: Before checking harness, check intermediate 
connector B-130 and repair if necessary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 15 .

NO : 

Repair.

STEP 15. Connector check: A-08 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 16 .

NO : 

Repair or replace.

1

2

3

4

5

6

AK402103

Connector: B-141

Harness side 
connector

B-141

AC

3

2

1

4

AK402107

J/B side 
connector

Connector: B-127
J/B (front side)

AC

B-127

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

AI

A-08

Connector: 

A-08

A-08 Special tool power plant ECU check 
harness

Engine-ECU

Battery

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-311

STEP 16. Perform voltage measurement at A-08 
engine-ECU connector.

•

Disconnect connector and measure at harness side.

• Ignition switch: ON

• Voltage between terminal No. 95 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 17 .

NO : 

Check intermediate connector B-110, and 

repair if necessary. If intermediate 
connector is normal, check and repair 
harness between B-114 (terminal No. 2) 
cooling fan control relay (LO) connector and 
A-08 (terminal No. 95) engine-ECU 
connector.

• Check signal line for open/short 

circuit.

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

AI

A-08

Connector: 

A-08

A-08 Special tool power plant ECU check 
harness

Engine-ECU

Battery

AK402106

3

2

1

4

AC

Connector: B-114

J/B side 
connector

B-114

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-312

STEP 17. Perform voltage measurement at A-08 
engine-ECU connector.

•

Disconnect connector and measure at harness side.

• Ignition switch: ON

• Voltage between terminal No. 96 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 18 .

NO : 

Check intermediate connector B-112, and 

repair if necessary. If intermediate 
connector is normal, check and repair 
harness between B-127 (terminal No. 2) 
cooling fan control relay (HI) connector and 
A-08 (terminal No. 96) engine-ECU 
connector.

• Check signal line for open/short 

circuit.

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

AI

A-08

Connector: 

A-08

A-08 Special tool power plant ECU check 
harness

Engine-ECU

Battery

3

2

1

4

AK402107

J/B side 
connector

Connector: B-127
J/B (front side)

AC

B-127

Main

Index

Group

TOC