Mitsubishi Colt Ralliart. Manual - part 57

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-182

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.

STEP 11. Check harness between B-121 (terminal 
No. 3) throttle valve control servo relay 
connector and battery.

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

• Check power supply line for damage.

Q:  Is the check result?

YES : 

Go to Step 12 .

NO : 

Repair the damaged harness wire.

STEP 12. Check harness between B-121 (terminal 
No. 1) throttle valve control servo relay 
connector and B-106 (terminal No. 4) engine 
control relay connector.

• Check power supply line for damage.

Q:  Is the check result?

YES : 

Go to Step 13 .

NO : 

Repair the damaged harness wire.

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>

AK402030

3

2

1

4

Connector: B-121

B-121

AC

B-121 
Relay box side 
connector

AK402030

3

2

1

4

Connector: B-121

B-121

AC

B-121 
Relay box side 
connector

3

2

1

4

AK402060

B-106
J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-183

STEP 13. Check harness between B-121 (terminal 
No. 2) throttle valve control servo relay 
connector and A-08 (terminal No. 123) 
engine-ECU connector or engine-CVT-ECU 
connector.

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

• Check power supply line for damage.

Q:  Is the check result?

YES : 

Go to Step 14 .

NO : 

Repair the damaged harness wire.

STEP 14. Check harness between B-121 (terminal 
No. 4) throttle valve control servo relay 
connector and A-08 (terminal No. 78) engine-ECU 
connector or engine-CVT-ECU connector.

NOTE:  Before checking harness, check intermedi-
ate connector B-112, and repair if necessary.

• Check power supply line for damage.

Q:  Is the check result?

YES : 

Go to Step 15 .

NO : 

Repair the damaged harness wire.

AK402030

3

2

1

4

Connector: B-121

B-121

AC

B-121 
Relay box side 
connector

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>

AK402030

3

2

1

4

Connector: B-121

B-121

AC

B-121 
Relay box side 
connector

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-184

STEP 15. M.U.T.-III diagnosis code.

• Reconfirmation of diagnosis code.

Q: Is the diagnosis code set?

YES : 

Replace the engine-ECU <M/T> or 

engine-CVT-ECU <CVT>.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 

P.00-13

).

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-185

Code No. P1021: Oil Feeder Control Valve System

OPERATION

• Power is supplied to the oil feeder control valve 

(terminal No. 1) from the engine control relay (ter-
minal No. 4).

• The engine-ECU <M/T> or engine-CVT-ECU 

<CVT> (terminal No. 52) makes the power tran-
sistor in the unit be in ON position, and that 
makes currents go on the oil feeder control valve 
(terminal No. 2).

AK402694

3

1

2

4

1 2

19

21

20

18

17

16

15

14

1213

11

8 9

L

10

37
52 53 54 555657585960616263646566

38 39 404142434445464748495051

22 23 24 252627282930313233343536

7

5

3

1

6

4

2

4

6

Engine
control
relay

R

R

W-B

B-106

B-112

B-108

A-17

Oil feeder control valve

3

1

4

1

2

52

2

Oil Feeder Control Valve Circuit

A-114

A-101

MU802779

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

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

1

1

R

Fusible link

16

20A

J/B

AD

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Gray
R: Red  P: Pink  V: Violet  Pu: Purple

Main

Index

Group

TOC