Mitsubishi Outlander (2003+). Manual — part 45
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-43
STEP 6. Connector check: C-137 engine-ECU
connector
Q: Is the check result normal?
YES :
Check and repair harness between B-108
(terminal No. 1) engine coolant temperature
sensor connector and C-137 (terminal No.
83) engine-ECU connector.
Check output line for open circuit.
NO :
Repair.
STEP 7. Connector check: C-137 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair.
AK300254
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
AB
CONNECTOR: C-137
C-137
Harness side connector
AK300261
1
2
Harness side
connector
B-108 (B)
AB
Connector: B-108
AK300254
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
AB
CONNECTOR: C-137
C-137
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-44
STEP 8. Check harness between B-108 (terminal
No. 1) engine coolant temperature sensor
connector and C-137 (terminal No. 83) engine-
ECU connector.
Check output line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair.
STEP 9. MUT-II data list
Refer to Data list reference table
a. Item 21: Engine coolant temperature sensor
OK:
Engine cold state: At ambient temperature
(atmospheric temperature) or equivalent.
Engine hot state: At 80
-
120
C
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
-
How to Use
Troubleshooting/Inspection Service Points
NO :
Replace engine-ECU.
STEP 10. Measure voltage at B-108 engine
coolant temperature sensor connector.
Disconnect connector and measure at harness
side.
Voltage between terminal No. 2 and earth.
OK: 2
W
or less
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Go to Step 11 .
STEP 11. Connector check: C-137 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Repair.
AK300261
1
2
Harness side
connector
B-108 (B)
AB
Connector: B-108
AK300254
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
AB
CONNECTOR: C-137
C-137
Harness side connector
AK300261
1
2
Harness side
connector
B-108 (B)
AB
Connector: B-108
AK300254
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
AB
CONNECTOR: C-137
C-137
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-45
STEP 12. Check harness between B-108 (terminal
No. 2) engine coolant temperature sensor
connector and C-137 (terminal No. 92) engine-
ECU connector.
Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair.
STEP 13. Measure voltage at B-108 engine
coolant temperature sensor connector.
Use special tool test harness (MB991658) to con-
nect connector, and measure at pick-up harness.
Ignition switch: ON
Voltage between terminal No. 1 and earth.
OK:
Engine coolant temperature at
-
20
C: 3.9
-
4.5
V
Engine coolant temperature at 0
C: 3.2
-
3.8 V
Engine coolant temperature at 20
C: 2.3
-
2.9
V
Engine coolant temperature at 40
C: 1.3
-
1.9
V
Engine coolant temperature at 60
C: 0.7
-
1.3
V
Engine coolant temperature at 80
C: 0.3
-
0.9
V
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Go to Step 14 .
AK300261
1
2
Harness side
connector
B-108 (B)
AB
Connector: B-108
AK300254
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
AB
CONNECTOR: C-137
C-137
Harness side connector
AK300261
1
2
Harness side
connector
B-108 (B)
AB
Connector: B-108
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-46
STEP 14. Connector check: C-137 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Repair.
STEP 15. Check harness between B-108 (terminal
No. 1) engine coolant temperature sensor
connector and C-137 (terminal No. 83) engine-
ECU connector.
Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 16 .
NO :
Repair.
AK300254
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
AB
CONNECTOR: C-137
C-137
Harness side connector
AK300261
1
2
Harness side
connector
B-108 (B)
AB
Connector: B-108
AK300254
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
AB
CONNECTOR: C-137
C-137
Harness side connector
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