Mitsubishi Outlander (2003+). Manual — part 93
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-235
STEP 5. Measure voltage at C-134 engine-ECU
connector.
Measure engine-ECU terminal voltage.
Ignition switch: ON
Voltage between terminal No. 12 and earth, also
between terminal No. 25 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Check and repair C-134 engine-ECU
connector.
NO :
Go to Step 6 .
STEP 6. Connector check: C-137 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair.
STEP 7. Measure voltage at C-137 engine-ECU
connector.
Measure engine-ECU terminal voltage.
Ignition switch: ON
Voltage between terminal No. 82 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Go to Step 8 .
STEP 8. Connector check: C-137 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair.
AK300257
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
13 12
23
24
25
26
21
3
10
11
AB
CONNECTOR: C-134
C-134
Harness side connector
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
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
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-236
STEP 9. Check ignition switch.
Check ignition switch (Refer to GROUP 54A
-
Ignition Switch
-
Ignition Switch
). Q: Is the check result normal? YES : Go to Step 10
NO :
Replace ignition switch.
STEP 10. Connector check: C-303 ignition switch
connector
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair.
STEP 11. Check harness between C-303 (terminal
No. 2) ignition switch connector and C-137
(terminal No. 82) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connectors C-106, C-202 and C-203, and repair if
necessary.
Check output line for open/short circuit.
Q: Is the check result normal?
YES :
Check and repair ignition switch IG1 power
supply line harness and connector.
Check power supply line for short
circuit.
NO :
Repair.
1
2
3
4
5
6
AK300304
CONNECTOR: C-303
C-303
Harness side
connector
AB
1
2
3
4
5
6
AK300304
CONNECTOR: C-303
C-303
Harness side
connector
AB
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-237
STEP 12. Measure voltage at C-135 engine-ECU
connector.
Measure engine-ECU terminal voltage.
Ignition switch: OFF
Voltage between terminal No. 38 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Check and repair harness between B-17X
(terminal No. 2) engine control relay
connector and C-135 (terminal No. 38)
engine-ECU connector.
Check earthing line for open/short
circuit.
STEP 13. Measure voltage at C-135 engine-ECU
connector.
Measure engine-ECU terminal voltage.
Ignition switch: ON
Voltage between terminal No. 38 and earth.
OK: 1 V or less
Q: Is the check result normal?
YES :
Go to Step 17 .
NO :
Go to Step 14 .
AK300256
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
AB
CONNECTOR: C-135
C-135
Harness side connector
AK300255
2
1
3
4
Relay box’s
triangle marks
AB
CONNECTOR: B-17X
B-17X
Harness side
connector
AK300256
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
AB
CONNECTOR: C-135
C-135
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-238
STEP 14. Connector check: C-135 engine-ECU
connector, C-303 ignition switch connector
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Repair.
STEP 15. Check harness between C-303 (terminal
No. 2) ignition switch connector and C-137
(terminal No. 82) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connectors C-106, C-202 and C-203 and repair if
necessary.
Check output line for open/short circuit.
Q: Is the check result normal?
YES :
Go to Step 16 .
NO :
Repair.
STEP 16. Check the trouble symptoms.
Q: Does trouble symptom persist?
YES :
Replace engine-ECU.
NO :
Intermittent malfunction (Refer to GROUP
00
-
How to Use
Troubleshooting/Inspection Service Points
).
AK300256
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
AB
CONNECTOR: C-135
C-135
Harness side connector
1
2
3
4
5
6
AK300304
CONNECTOR: C-303
C-303
Harness side
connector
AB
1
2
3
4
5
6
AK300304
CONNECTOR: C-303
C-303
Harness side
connector
AB
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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