Mitsubishi Lancer Evolution IX. Manual — part 397
![](/vehicles/winoney/wruvea/ger/dudore.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-63
STEP 7. Connector check: C-119 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair or replace the connector.
STEP 8. Check harness between B-03 (terminal
No. 1) throttle position sensor connector and
C-119 (terminal No. 42) engine-ECU connector.
• Check power supply line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair the damaged harness wire.
AK501994
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
AB
Connector: C-119
C-119 (GR)
C-119 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
AK305010
2 1
3
4
AB
Connector : B-03
Harness side
connector
B-03(B)
AK501994
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
AB
Connector: C-119
C-119 (GR)
C-119 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
![](/vehicles/winoney/wruvea/ger/qunou.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-64
STEP 9. M.U.T.-II/III data list
• Refer to Data List Reference Table
.
a. Item No. 14: Throttle position sensor
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
).
NO :
Replace the engine-ECU.
STEP 10. Perform resistance measurement at
B-03 throttle position sensor connector.
• Disconnect connector, and measure at harness
side.
• Resistance between terminal No. 4 and earth.
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Go to Step 11 .
STEP 11. Connector check: C-119 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Repair or replace the connector.
AK305010
2 1
3
4
AB
Connector : B-03
Harness side
connector
B-03(B)
AK501994
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
AB
Connector: C-119
C-119 (GR)
C-119 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
![](/vehicles/winoney/wruvea/ger/hamy.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-65
STEP 12. Check harness between B-03 (terminal
No. 4) throttle position sensor connector and
C-119 (terminal No. 49) engine-ECU connector.
• Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair the damaged harness wire.
STEP 13. Perform voltage measurement at B-03
throttle position sensor connector.
• Use special tool test harness (MB991536) to con-
nect connector, and measure at pick-up harness.
• Ignition switch: "ON"
• Voltage between terminal No. 1 and earth.
OK: 4.9
− 5.1 V
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Go to Step 14 .
AK305010
2 1
3
4
AB
Connector : B-03
Harness side
connector
B-03(B)
AK501994
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
AB
Connector: C-119
C-119 (GR)
C-119 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
AK305010
2 1
3
4
AB
Connector : B-03
Harness side
connector
B-03(B)
![](/vehicles/winoney/wruvea/ger/wors.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-66
STEP 14. Connector check: C-119 engine-ECU
connector
Q: Is the check result normal?
YES :
Check and repair harness between B-03
(terminal No. 1) throttle position sensor
connector and C-119 (terminal No. 42)
engine-ECU connector.
• Check power supply line for damage.
NO :
Repair or replace the connector.
STEP 15. Perform voltage measurement at B-03
throttle position sensor connector.
• Use special tool test harness (MB991536) to con-
nect connector, and measure at pick-up harness.
• Ignition switch: "ON"
• Voltage between terminal No. 4 and earth.
OK: 0.5 V or less
Q: Is the check result normal?
YES :
Go to Step 17 .
NO :
Go to Step 16 .
AK501994
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
AB
Connector: C-119
C-119 (GR)
C-119 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
AK305010
2 1
3
4
AB
Connector : B-03
Harness side
connector
B-03(B)
AK305010
2 1
3
4
AB
Connector : B-03
Harness side
connector
B-03(B)
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