Mitsubishi Colt Ralliart. Manual — part 747
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-313
STEP 18. Check harness between B-114 (terminal
No. 2) cooling fan control relay (LO) connector
and A-08 (terminal No. 95) engine-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 19 .
NO :
Repair.
AK402106
3
2
1
4
AC
Connector: B-114
J/B side
connector
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
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-314
STEP 19. Check harness between B-127 (terminal
No. 2) cooling fan control relay (HI) connector
and A-08 (terminal No. 96) engine-ECU
connector.
NOTE: Before checking harness, check intermediate
connector B-112 and repair if necessary.
• Check signal line for damage.
Q: Is the check result normal?
YES :
Go to Step 20 .
NO :
Repair.
STEP 20. Perform resistance measurement at
A-20 cooling fan motor connector.
•
Disconnect connector and measure at harness side.
• Resistance between terminal No. 2, No. 4 and
earth.
OK: Continuity (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 22 .
NO :
Go to Step 21 .
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
AK402108
2 1
4 3
AC
Connector: A-20
Harness side connector
A-20
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-315
STEP 21. Connector check: A-31 joint connector
Q: Is the check result normal?
YES :
a. Check and repair harness between A-20
(terminal No. 2) cooling fan motor
connector and A-31 (terminal No. 2) joint
connector.
b. Check and repair harness between A-20
(terminal No. 4) cooling fan motor
connector and A-31 (terminal No. 5) joint
connector.
• Check earthing line for damage.
NO :
Repair or replace.
STEP 22. Check harness between B-114 (terminal
No. 4) cooling fan control relay (LO) connector
and A-20 (terminal No. 1) cooling fan motor
connector.
NOTE: Before checking harness, check intermediate
connector B-109 and repair if necessary.
• Check power supply line for open/short circuit or
damage.
Q: Is the check result normal?
YES :
Go to Step 23 .
NO :
Repair.
AK402209
3
2 1
6
5 4
Connector: A-31
Harness side
connector
A-31(G)
AC
AK402108
2 1
4 3
AC
Connector: A-20
Harness side connector
A-20
AK402106
3
2
1
4
AC
Connector: B-114
J/B side
connector
B-114
AK402108
2 1
4 3
AC
Connector: A-20
Harness side connector
A-20
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-316
STEP 23. Check harness between B-127 (terminal
No. 4) cooling fan control relay (HI) connector
and A-20 (terminal No. 3) cooling fan motor
connector.
NOTE: Before checking harness, check intermediate
connector B-109 and repair if necessary.
• Check power supply line for open/short circuit or
damage.
Q: Is the check result normal?
YES :
Go to Step 24 .
NO :
Repair.
STEP 24. M.U.T.-III actuator test
• Refer to Actuator Test Reference Table
.
a. Item 20: Cooling fan motor (HI)
b. Item 21: Cooling fan motor (LO)
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunctions
).
NO :
Replace engine-ECU.
3
2
1
4
AK402107
J/B side
connector
Connector: B-127
J/B (front side)
AC
B-127
AK402108
2 1
4 3
AC
Connector: A-20
Harness side connector
A-20
Main
Index
Group
TOC
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