Mitsubishi Colt Ralliart. Manual — part 46
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-138
STEP 9. Perform voltage measurement at A-133
crank angle sensor connector.
• Disconnect connector, and measure at harness
side.
• Ignition switch: ON
• Voltage between terminal No. 3 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Go to Step 10 .
STEP 10. Connector check: B-106 engine control
relay connector
Q: Is the check result normal?
YES :
Check intermediate connector A-17 and
B-112, and repair if necessary. If
intermediate connectors are normal, check
and repair harness between A-133 (terminal
No. 3) crank angle sensor connector and
B-106 (terminal No. 4) engine control relay
connector.
• Check power supply line for
open/short circuit.
NO :
Repair or replace the connector.
AK402016
1
2
3
AC
Connector: A-133
A-133 (B)
A-133 Harness side
connector
3
2
1
4
AK402060
B-106
J/B side
connector
B-106
Connector: B-106
J/B (front side)
AC
AK402016
1
2
3
AC
Connector: A-133
A-133 (B)
A-133 Harness side
connector
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-139
STEP 11. Perform resistance measurement at
A-133 crank angle sensor connector.
• Disconnect connector, and measure at harness
side.
• Resistance between terminal No. 1 and earth.
OK: Continuity (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Go to Step 12 .
STEP 12. Connector check: A-114 engine-ECU
connector or engine-CVT-ECU connector
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Repair or replace the connector.
STEP 13. Check harness between A-133 (terminal
No. 1) crank angle sensor connector and A-114
(terminal No. 28) engine-ECU connector or
engine-CVT-ECU connector.
• Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 14 .
NO :
Repair the damaged harness wire.
STEP 14. M.U.T.-III data list
• Refer to Data List Reference Table
.
a. Item 22: Crank angle sensor
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 crank angle sensor.
AK402016
1
2
3
AC
Connector: A-133
A-133 (B)
A-133 Harness side
connector
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
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45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
L
AD
A-114
Connector:
A-114
Harness side connector
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
Battery
AK402016
1
2
3
AC
Connector: A-133
A-133 (B)
A-133 Harness side
connector
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
AD
A-114
Connector:
A-114
Harness side connector
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
Battery
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-140
STEP 15. Perform output wave pattern
measurement at A-133 crank angle sensor
connector (Using an oscilloscope).
• Use special tool test harness (MB991709) to con-
nect connector, and measure at pick-up harness.
• Engine: Idling
• Transmission: P range
• Voltage between terminal No. 2 and earth.
OK: Waveforms should be displayed on
Inspection procedure using an oscilloscope
(Refer to
), its maximum value
should be 4.8 V or more, and its minimum
value should be 0.6 V or less with no noise in
waveform.
Q: Is the check result normal?
YES :
Go to Step 21 .
NO :
Go to Step 16 .
STEP 16. Connector check: B-106 engine control
relay connector
Q: Is the check result normal?
YES :
Go to Step 17 .
NO :
Repair or replace the connector.
AK402016
1
2
3
AC
Connector: A-133
A-133 (B)
A-133 Harness side
connector
3
2
1
4
AK402060
B-106
J/B side
connector
B-106
Connector: B-106
J/B (front side)
AC
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-141
STEP 17. Check harness between A-133 (terminal
No. 3) crank angle sensor connector and B-106
(terminal No. 4) engine control relay connector.
NOTE: Before checking harness, check intermediate
connector 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 18 .
NO :
Repair the damaged harness wire.
STEP 18. Connector check: A-114 engine-ECU
connector or engine-CVT-ECU connector
Q: Is the check result normal?
YES :
Go to Step 19 .
NO :
Repair or replace the connector.
AK402016
1
2
3
AC
Connector: A-133
A-133 (B)
A-133 Harness side
connector
3
2
1
4
AK402060
B-106
J/B side
connector
B-106
Connector: B-106
J/B (front side)
AC
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
AD
A-114
Connector:
A-114
Harness side connector
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
Battery
Main
Index
Group
TOC
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