Mitsubishi Lancer Evolution IX. Manual — part 435
![](/vehicles/winoney/wruvea/ger/sthander.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-215
STEP 14. Connector check: C-117 and C-119
engine-ECU connector
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair or replace the connector.
AK501997
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
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-117, C-119
C-119 (GR)
C-117 (GR)
C-119 (GR)
C-117 (GR)
C-117 Harness side connector
C-119 Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
![](/vehicles/winoney/wruvea/ger/isu.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-216
Code No. P1012: Intake Camshaft Position Sensor System
OPERATION
• Power is supplied to the intake camshaft position
sensor (terminal No. 3) from the engine control
relay (terminal No. 4) and is earthed to the
engine-ECU (terminal No. 34) from the intake
camshaft position sensor (terminal No. 1).
• A power voltage of 5 V is applied to the intake
camshaft position sensor output terminal (termi-
nal No. 2) from the engine-ECU (terminal No. 53).
2
1
3
1
2
3
4
AK501813
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
2
3 4
5 6
7 8
9
11 12 13 14 15 16 17 18 19 20
30
21 22 23
24 25
26 27 28 29
3132 33
34 35
1
10
5 V
Engine control relay
Intake camshaft position sensor
B-124
MU802337
53
1
R-Y
2
3
Engine-ECU
Intake camshaft position sensor circuit
34
B
L-R
B-12X
Battery
Wire colour code
B: Black LG: Light green G: Green L: Blue W: White Y: Yellow SB: Sky blue BR: Brown O: Orange GR: Gray
R: Red P: Pink V: Violet PU: Purple
C-119
(MU803782)
C-121
(MU803783)
B-Y
6 <A-13> (*1) or
13 <C-31> (*2)
B-Y
B-Y
NOTE
*1: L.H. drive vehicles
*2: R.H. drive vehicles
AC
2
1
4
3
To engine-ECU
![](/vehicles/winoney/wruvea/ger/maz.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-217
FUNCTION
• The intake camshaft position sensor detects the
top dead center on the compression stroke of the
No. 1 cylinder and inputs a pulse signal to the
engine-ECU.
TROUBLE JUDGMENT
Check Condition
• Engine: During the engine cranking and the driv-
ing.
Judgment Criterion
• The sensor output voltage remains unchanged
(no pulse signal is inputted) for 4 seconds.
PROBABLE CAUSE
• Failed intake camshaft position sensor
• Open/short circuit in intake camshaft position
sensor circuit or loose connector contact
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Connector check: B-124 intake camshaft
position sensor connector
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Repair or replace the connector.
STEP 2. Perform voltage measurement at B-124
intake camshaft position 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 4 .
NO :
Go to Step 3 .
AK502002
1
2
3
AB
Connector: B-124
B-124 (B)
Harness side
connector
AK502002
1
2
3
AB
Connector: B-124
B-124 (B)
Harness side
connector
![](/vehicles/winoney/wruvea/ger/gnabri.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-218
STEP 3. Connector check: B-12X engine control
relay connector
Q: Is the check result normal?
YES :
Check and repair harness between B-124
(terminal No. 3) intake camshaft position
sensor connector and B-12X (terminal No.
4) engine control relay connector.
• Check power supply line for
open/short circuit.
NO :
Repair or replace the connector.
STEP 4. Perform voltage measurement at B-124
intake camshaft position sensor connector.
• Disconnect connector, and measure at harness
side.
• Ignition switch: "ON"
• Voltage between terminal No. 2 and earth.
OK: 4.9
− 5.1 V
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Go to Step 5 .
AK305003
2
1
3
4
AB
Connector : B-12X
B-12X
Harness side
connector
Relay box’s
triangle marks
AK502002
1
2
3
AB
Connector: B-124
B-124 (B)
Harness side
connector
AK502002
1
2
3
AB
Connector: B-124
B-124 (B)
Harness side
connector
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