Mitsubishi Colt Ralliart. Manual — part 699
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-121
STEP 4. Perform voltage measurement at A-137
waste gate solenoid valve connector.
• Disconnect connector and measure at harness
side.
• Ignition switch: ON
• Voltage between terminal No. 1 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Go to Step 5 .
STEP 5. Connector check: B-106 engine control
relay connector
Q: Is the check result normal?
YES :
Check intermediate connectors A-17 and
B-112, and repair if necessary. If
intermediate connectors are normal, check
and repair harness between A-137 (terminal
No. 1) waste gate solenoid valve connector
and B-106 (terminal No. 4) engine control
relay connector.
• Check power supply line for
open/short circuit.
NO :
Repair or replace.
AK402121
1
2
AC
Connector: A-137
Harness side
connector
A-137(G)
3
2
1
4
AK402084
J/B side
connector
B-106
Connector: B-106
J/B (front side)
AC
AK402121
1
2
AC
Connector: A-137
Harness side
connector
A-137(G)
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-122
STEP 6. Perform voltage measurement at A-114
engine-ECU connector.
• Disconnect connector and measure at harness
side.
• Ignition switch: ON
• Voltage between terminal No. 36 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Go to Step 7 .
STEP 7. Connector check: A-114 engine-ECU
connector
Q: Is the check result normal?
YES :
Check and repair harness between A-137
(terminal No. 2) waste gate solenoid valve
connector and A-114 (terminal No. 36)
engine-ECU connector.
• Check output line for open/short
circuit.
NO :
Repair or replace.
AK402745
6
4
2
5
3
1
9
7
8
10
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60
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62
63
64
65
66
L
AF
A-114
Connector:
A-114
Harness side connector
Engine-ECU
Battery
AK402745
6
4
2
5
3
1
9
7
8
10
11
12
13
14
15
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17
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51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
L
AF
A-114
Connector:
A-114
Harness side connector
Engine-ECU
Battery
AK402121
1
2
AC
Connector: A-137
Harness side
connector
A-137(G)
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-123
STEP 8. Connector check: A-114 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair or replace.
STEP 9. Check harness between A-137 (terminal
No. 2) waste gate solenoid valve connector and
A-114 (terminal No. 36) engine-ECU connector.
• Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Repair.
AK402745
6
4
2
5
3
1
9
7
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
L
AF
A-114
Connector:
A-114
Harness side connector
Engine-ECU
Battery
AK402121
1
2
AC
Connector: A-137
Harness side
connector
A-137(G)
AK402745
6
4
2
5
3
1
9
7
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
L
AF
A-114
Connector:
A-114
Harness side connector
Engine-ECU
Battery
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-124
STEP 10. Check harness between A-137 (terminal
No. 1) waste gate solenoid valve connector and
B-106 (terminal No. 4) engine control relay
connector.
NOTE: Before checking harness, check intermediate
connectors A-17 and B-112, and repair if necessary.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair.
STEP 11. M.U.T.-III actuator test
• Item 12: Waste gate solenoid valve
OK: Operating sound can be heard and the
valve vibrates.
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.
AK402121
1
2
AC
Connector: A-137
Harness side
connector
A-137(G)
3
2
1
4
AK402084
J/B side
connector
B-106
Connector: B-106
J/B (front side)
AC
Main
Index
Group
TOC
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