Mitsubishi Colt Ralliart. Manual - part 740

 

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Mitsubishi Colt Ralliart. Manual - part 740

 

 

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-285

STEP 6. Perform voltage measurement at A-08 
engine-ECU connector.

Disconnect engine-ECU connector, and connect 

Special Tool Power Plant ECU Check Harness 
(MB991987), and measure the voltage on the 
check connector.

• Ignition switch: ON

• Voltage between terminal No. 77 and earth, also 

between terminal No. 92 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Check intermediate connector B-112, and 

repair if necessary. If intermediate 
connector is normal, check and repair 
harness between B-106 (terminal No. 2) 
engine control relay connector and A-08 
(terminal No. 107) engine-ECU connector.

• Check signal line for short circuit.

NO : 

Go to Step 7 .

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

AK402084

J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-286

STEP 7. Check harness between B-106 (terminal 
No. 4) engine control relay connector and A-08 
(terminal No. 77 and No. 92) engine-ECU 
connector.

Check power supply line for open/short circuit or 

damage.

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Repair.

STEP 8. Perform voltage measurement at A-08 
engine-ECU connector.

Disconnect connector and measure at harness side.

• Ignition switch: ON

• Voltage between terminal No. 122 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Go to Step 9 .

STEP 9. Connector check: B-141 ignition switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair or replace.

3

2

1

4

AK402084

J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

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

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

1

2

3

4

5

6

AK402103

Connector: B-141

Harness side 
connector

B-141

AC

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-287

STEP 10. Check ignition switch.

Check ignition switch (Refer to GROUP 54A 

− Ignition 

Switch 

− Inspection 

P.54A-27

).

Q: Is the check result normal?

YES : 

Check intermediate connectors B-110, 

B-129, and repair if necessary. If 
intermediate connectors are normal, check 
and repair harness between B-141 (terminal 
No. 2) ignition switch connector and A-08 
(terminal No. 122) engine-ECU connector.

• Check output line for open/short 

circuit.

NO : 

Replace ignition switch.

STEP 11. Check harness between B-106 (terminal 
No. 2) engine control relay connector and A-08 
(terminal No. 107) engine-ECU connector.

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

• Check output line for damage.

1

2

3

4

5

6

AK402103

Connector: B-141

Harness side 
connector

B-141

AC

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

AK402084

J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

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-288

Q: Is the check result normal?

YES : 

Go to Step 12 .

NO : 

Repair.

STEP 12. Check harness between battery and 
B-106 (terminal No. 1 and No. 3) engine control 
relay 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. 2) ignition switch connector and A-08 
(terminal No. 122) engine-ECU connector.

NOTE: Before checking harness, check intermediate 
connectors B-110, B-129, and repair if necessary.

• Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 14 .

NO : 

Repair.

3

2

1

4

AK402084

J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

1

2

3

4

5

6

AK402103

Connector: B-141

Harness side 
connector

B-141

AC

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

 

 

 

 

 

 

 

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