Mitsubishi Colt Ralliart. Manual — part 714
![](/vehicles/winoney/ama/flend/onou.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-181
Q: Is the check result normal?
YES :
Check and repair harness between B-106
(terminal No. 4) engine control relay
connector and B-121 (terminal No. 1)
throttle valve control servo relay connector.
• Check power supply line for
open/short circuit.
NO :
Repair or replace the connector.
STEP 6. Perform voltage measurement at A-08
engine-ECU connector.
• Disconnect connector, and measure at harness
side.
• Ignition switch: ON
• Voltage between terminal No. 123 and earth.
OK: System voltage
AK402725
77
78
79
80
81
82
83
84
92
93
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99
85
86
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100
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104
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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
AK402100
3
2
1
4
AC
Connector: B-121
J/B side
connector
B-121
Main
Index
Group
TOC
![](/vehicles/winoney/ama/flend/igatad.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-182
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Check intermediate connector B-110, and
repair if necessary. If intermediate
connector is normal, check and repair
harness between B-121 (terminal No. 2)
throttle valve control servo relay connector
and A-08 (terminal No. 123) engine-ECU
connector.
• Check earthing line for open/short
circuit.
STEP 7. Perform voltage measurement at A-08
engine-ECU connector.
• Disconnect connector, and measure at harness
side.
• Ignition switch: ON
• Voltage between terminal No. 78 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Go to Step 8 .
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
![](/vehicles/winoney/ama/flend/drise.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-183
STEP 8. Check harness between B-121 (terminal
No. 4) throttle valve control servo relay
connector and A-08 (terminal No. 78) engine-ECU
connector.
NOTE: Before checking harness, check intermediate
connector B-112, and repair if necessary.
• Check power supply line for open/short circuit.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair the damaged harness wire.
STEP 9. Connector check: A-08 engine-ECU
connector.
• Check output line for damage.
Q: Is the check result normal?
YES :
Replace engine-ECU.
NO :
Repair or replace the connector.
AK402100
3
2
1
4
AC
Connector: B-121
J/B side
connector
B-121
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
Main
Index
Group
TOC
![](/vehicles/winoney/ama/flend/yew.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-184
STEP 10. Connector check: A-08 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair or replace the connector.
STEP 11. Check and repair 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 harness connector in good condition?
YES :
Go to Step 12 .
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
AI
A-08
Connector:
A-08
A-08 Special tool power plant ECU check
harness
Engine-ECU
Battery
AK402100
3
2
1
4
AC
Connector: B-121
J/B side
connector
B-121
Main
Index
Group
TOC
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