Mitsubishi Lancer Evolution IX. Manual — part 413
![](/vehicles/winoney/wruvea/ger/cer.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-127
STEP 10. Connector check: C-121 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-17 (terminal
No. 2) No. 4 injector connector and C-121
(terminal No. 2) engine-ECU connector.
• Check output line for open/short circuit and dam-
age.
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Repair the damaged harness wire.
AK501995
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
31
32
33
34
35
1
10
AB
Connector: C-121
C-121 (GR)
C-121 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
AK305012
1
2
Connector : B-17
Harness side connector
B-17(B)
AF
AK501995
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
31
32
33
34
35
1
10
AB
Connector: C-121
C-121 (GR)
C-121 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
![](/vehicles/winoney/wruvea/ger/ochicht.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-128
STEP 12. Perform signal wave pattern
measurement at C-121 engine-ECU connector
(Using an oscilloscope).
• Engine: Idling
• Transmission: Neutral
• Voltage between terminal No. 2 and earth.
OK: Waveform should be display on Inspec-
tion procedure using an oscilloscope (Refer
to
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.
AK501995
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
31
32
33
34
35
1
10
AB
Connector: C-121
C-121 (GR)
C-121 (GR)
Harness side connector
<L. H. drive vehicles>
<R. H. drive vehicles>
![](/vehicles/winoney/wruvea/ger/woi.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-129
Code No. P0234: Turbocharger Wastegate System Malfunction
FUNCTION
• The engine-ECU checks that the engine is not
overcharged by always monitoring intake air vol-
ume.
• The engine-ECU protects the engine by shutting
off fuel when an overcharged condition is
detected.
TROUBLE JUDGMENT
Check Condition
• Waste gate solenoid valve is normal.
Judgment Criterion
• The volumetric efficiency continues to be the sta-
tus having more than the specified valve for the
stipulated period.
PROBABLE CAUSES
• Failed turbocharger wastages actuator
• Failed supercharging pressure control system
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check turbocharger supercharging
pressure.
• Check turbocharger supercharging pressure
(Refer to GROUP 15
− On-vehicle Service − Tur-
bocharger Supercharging Pressure
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Repair or replace.
STEP 2. Check supercharging pressure control
system.
• Check supercharging pressure control system
(Refer to GROUP 15
− On-vehicle Service −
Supercharging Pressure Control System
).
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Repair or replace.
STEP 3. M.U.T.-II/III diagnosis code.
• Reconfirmation of diagnosis code.
Q: Is the diagnosis code?
YES :
Replace the engine-ECU.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
).
![](/vehicles/winoney/wruvea/ger/pad.png)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-130
Code No. P0243: Waste Gate Solenoid Valve System
OPERATION
• Power is supplied from the engine control relay
(terminal No. 4) to the waste gate solenoid valve
(terminal No. 1).
• The engine-ECU (terminal No. 41) causes the
power transistor in the unit to be ON to supply
power to the waste gate solenoid valve (terminal
No. 2).
FUNCTION
• In response to a signal from the engine-ECU, the
waste gate solenoid valve controls the turbo
charge pressure to be introduced into the waste
gate actuator of the turbo charger.
TROUBLE JUDGMENT
Check Condition
• Battery voltage is 10 V or more.
AK501810
2
1
1
2
3
4
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
Battery
B-26
Waste gate solenoid valve
4
1
2
3
1
2
41
Engine-ECU
Waste gate solenoid valve circuit
B-12X
C-119
(MU801824)
B-Y
B-Y
B-Y
R-Y
LG
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
AB
NOTE
*1: L.H. drive vehicles
*2: R.H. drive vehicles
6 <A-13> (*1) or
13 <C-31> (*2)
Engine control relay
To engine-ECU
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст