Mitsubishi Lancer Evolution IX. Manual — part 434
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-211
STEP 5. Connector check: C-117 engine-ECU
connector
Q: Is the check result normal?
YES :
Check intermediate connector B-27, and
repair if necessary. If intermediate
connector is normal, check and repair
harness between B-30 (terminal No. 1)
transmission oil temperature sensor
connector and C-117 (terminal No. 96)
engine-ECU connector.
• Check output line for open circuit.
NO :
Repair or replace the connector.
STEP 6. Connector check: C-117 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair or replace the connector.
AK501996
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97 96
100
89
78
71
90
76
77
75
72
79
AB
Connector: C-117
C-117 (GR)
C-117 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
AK502000
1
2
AB
Connector: B-30
B-30 (B)
Harness side
connector
AK501996
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97 96
100
89
78
71
90
76
77
75
72
79
AB
Connector: C-117
C-117 (GR)
C-117 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-212
STEP 7. Check harness between B-30 (terminal
No. 1) transmission oil temperature sensor
connector and C-117 (terminal No. 96)
engine-ECU connector.
NOTE: Before checking harness, checking interme-
diate connector B-27, and repair if necessary.
• Check output line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair the damaged harness wire.
STEP 8. Check the trouble symptoms.
Q: Does trouble symptom persist?
YES :
Replace the engine-ECU.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
).
STEP 9. Perform resistance measurement at B-30
transmission oil temperature sensor connector.
• Disconnect connector and measure at harness
side.
• Resistance between terminal No. 2 and earth.
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Go to Step 10 .
AK502000
1
2
AB
Connector: B-30
B-30 (B)
Harness side
connector
AK501996
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97 96
100
89
78
71
90
76
77
75
72
79
AB
Connector: C-117
C-117 (GR)
C-117 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
AK502000
1
2
AB
Connector: B-30
B-30 (B)
Harness side
connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-213
STEP 10. Connector check: C-119 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair or replace the connector.
STEP 11. Check harness between B-30 (terminal
No. 2) transmission oil temperature sensor
connector and C-119 (terminal No. 49)
engine-ECU connector.
NOTE: Before checking harness, checking interme-
diate connector B-27, and repair if necessary.
• Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 8 .
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>
AK502000
1
2
AB
Connector: B-30
B-30 (B)
Harness side
connector
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>
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-214
STEP 12. Perform voltage measurement at B-30
transmission oil 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:
Transmission oil temperature at
−20°C: 3.9 −
4.5 V
Transmission oil temperature at 0
°C: 3.2 − 3.8
V
Transmission oil temperature at 20
°C: 2.3 − 2.9
V
Transmission oil temperature at 40
°C: 1.3 − 1.9
V
Transmission oil temperature at 60
°C: 0.7 − 1.3
V
Transmission oil temperature at 80
°C: 0.3 − 0.9
V
Q: Is the check result normal?
YES :
Go to Step 14 .
NO :
Go to Step 13 .
STEP 13. Connector check: C-117 engine-ECU
connector
Q: Is the check result normal?
YES :
Check intermediate connector B-27, and
repair if necessary. If intermediate
connector is normal, check harness
between B-30 (terminal No. 1) transmission
oil temperature sensor connector and C-117
(terminal No. 96) engine-ECU connector.
• Check output line for damage.
NO :
Repair or replace the connector.
AK502000
1
2
AB
Connector: B-30
B-30 (B)
Harness side
connector
AK501996
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97 96
100
89
78
71
90
76
77
75
72
79
AB
Connector: C-117
C-117 (GR)
C-117 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
AK502000
1
2
AB
Connector: B-30
B-30 (B)
Harness side
connector
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