Mitsubishi Colt Ralliart. Manual — part 88

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-306

STEP 9. Check harness between B-141 (terminal
No. 4) ignition switch connector and B-114
(terminal No. 1) cooling fan control relay.

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

• Check power supply line for damage.

Q: Is the check result normal?

YES :

Go to Step 10 .

NO :

Repair the damaged harness wire.

STEP 10. Connector check: A-08 engine-ECU
connector or engine-CVT-ECU connector

Q: Is the check result normal?

YES :

Go to Step 11 .

NO :

Repair or replace the connector.

AK402054

B-141

AC

Connector: B-141

1

2

3

4

5

6

B-141 Harness
side connector

AK402058

3

2

1

4

AC

B-114
J/B side
connector

Connector: B-114

J/B (front side)

B-114

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>

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-307

STEP 11. Perform voltage measurement at A-08
engine-ECU connector or engine-CVT-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 12 .

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 connector and A-08
(terminal No. 95) engine-ECU connector or
engine-CVT-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

AG

A-08

Connector:

A-08

Harness side connector

Battery

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

AK402058

3

2

1

4

AC

B-114
J/B side
connector

Connector: B-114

J/B (front side)

B-114

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-308

STEP 12. Check harness between B-114 (terminal
No. 2) cooling fan control relay connector and
A-08 (terminal No. 95) engine-ECU connector or
engine-CVT-ECU connector.

NOTE: Before checking harness, check intermediate
connector B-110, and repair if necessary.

• Check signal line for damage.

Q: Is the check result normal?

YES :

Go to Step 13 .

NO :

Repair the damaged harness wire.

STEP 13. Perform resistance measurement at
A-20 cooling fan motor connector.

• Disconnect connector and measure at harness

side.

• Resistance between terminal No. 2 and earth.

OK: Continuity (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 15 .

NO :

Go to Step 14.

STEP 14. Connector check: A-31 earth connector.

Q: Is the check result normal?

YES :

Check and repair harness between A-20

(terminal No. 2) cooling fan motor connector
and A-31 (terminal No. 2) earth connector.

• Check earthing line for damage.

NO :

Repair or replace the connector.

AK402058

3

2

1

4

AC

B-114
J/B side
connector

Connector: B-114

J/B (front side)

B-114

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>

AK402059

2 1

4 3

AC

A-20 Harness
side connector

A-20

Connector: A-20

AK402208

3

2 1

6

5 4

Connector: A-31

A-31 (G)

AC

A-31 Harness side
connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-309

STEP 15. Check harness between A-20 (terminal
No. 1) cooling fan motor connector and B-114
(terminal No. 4) cooling fan control relay
connector.

NOTE: Before checking harness, check intermediate
connectors B-109, and repair if necessary.

• Check power supply line for open/short circuit

and damage.

Q: Is the check result normal?

YES :

Go to Step 16 .

NO :

Repair the damaged harness wire.

STEP 16. M.U.T.-III actuator test

• Refer to Actuator Test Reference Table

P.13A-341

.

a. Item 20: Cooling fan motor

Q: Are the check results normal?

YES :

Intermittent malfunction (Refer to GROUP

00

− How to Use

Troubleshooting/Inspection Service Points

−

How to Cope with Intermittent Malfunctions

P.00-13

).

NO :

Replace engine-ECU <M/T> or
engine-CVT-ECU <CVT>.

AK402059

2 1

4 3

AC

A-20 Harness
side connector

A-20

Connector: A-20

AK402058

3

2

1

4

AC

B-114
J/B side
connector

Connector: B-114

J/B (front side)

B-114

Main

Index

Group

TOC