Mitsubishi Lancer Evolution X. Manual - part 250

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-65

STEP 4. Check intake variable valve timing sprocket 
operation mechanism for being stuck.
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Repair it. Then go to Step 6.

STEP 5. Check the trouble symptoms.
(1) Carry out test drive with the drive cycle pattern. Refer to 

Diagnostic Function − OBD-II Drive Cycle − Pattern 20 

P.13A-9

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0011 set?

YES : Replace the ECM. When the ECM is replaced, 

register the ID code. Refer to GROUP 42B, ID Code 
Registration Necessity Judgment Table <Vehicles 
with KOS> 

P.42B-11

 or GROUP 42C, ID Codes 

Registration Judgment Table <Vehicles with WCM> 

P.42C-9

. Then go to Step 6.

NO :  It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points − How to 

Cope with Intermittent Malfunctions 

P.00-15

.

STEP 6. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function − OBD-II Drive Cycle − Pattern 20 

P.13A-9

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0011 set?

YES : Retry the troubleshooting.
NO :  The inspection is complete.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-66

DTC P0012: Camshaft Position − Timing Over-Retarded

.

TECHNICAL DESCRIPTION

• If the vehicle equipped with 4B11-T/C engine 

continues the rough driving like competitive run-
ning (the running that constantly repeats the 
cycle of the full opened position of the accelerator 
pedal and the full closed position of the accelera-
tor pedal.), the amount of carbon mixed into the 
engine oil tends to increase. This can possibly 
cause the timing chain to gradually elongate. To 
prevent this, the function or logic monitoring the 
amount of elongation of the timing chain is inte-
grated into the ECM. The details are shown in 
timing chain maintenance (Refer to GROUP 00, 
Precautions Before Service − Timing Chain Main-

tenance 

P.00-37

).

.

DTC SET CONDITIONS

Check Condition

• Ignition switch is "ON" position.

Judgment Criterion

• The learning value for the current phase angle of 

V.V.T. at the intake (retard angle) side and the 
exhaust (advanced angle) side is different from 
the initial phase angle of V.V.T. by more than the 
specified value.

.

FAIL-SAFE AND BACKUP FUNCTION

• None

.

TROUBLESHOOTING HINTS (The most 
likely causes for this code to be set are: ) 

• Timing chain elongated.

DIAGNOSIS

STEP 1. Timing Chain Elongation Visual Check
Refer to GROUP 11A, On-vehicle Service − Timing Chain Elon-

gation Visual Check 

P.11A-17

.

Q: Are there any abnormalities?

YES : Initialize the learning value for the elongation of the 

timing chain. Refer to GROUP 00, Precautions Before 
Service − Timing Chain Maintenance 

P.00-37

.

NO :  Replace the timing chain and the oil pump chain. 

Then initialize the learning value for the elongation of 
the timing chain. Refer to GROUP 00, Precautions 
Before Service − Timing Chain Maintenance 

P.00-37

.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-67

DTC P0013: Exhaust Engine Oil Control Valve Circuit

AK704292

1

2

3 4 5 6 7 8 9 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

1

3

2

4

1 2 3

4 5 6

1 2

17

1

2

B-01

B-09

20A

WHITE

WHITE

WHITE

PINK

BLA

CK

WHITE

A-34X

4

3

1

2

22

OFF

ON

AB

36

FUSIBLE LINK

2

A-39

MU802607

EXHAUST ENGINE OIL CONTROL VALVE CIRCUIT

EXHAUST ENGINE OIL
CONTROL VALVE

MFI
RELAY

RELAY BOX
(ENGINE COMPARTMENT)

ENGINE
CONTROL
MODULE

TO ECM

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-68

.

CIRCUIT OPERATION

• The exhaust engine oil control valve power is 

supplied from the MFI relay (terminal No. 2).

• The ECM controls ground exhaust engine oil con-

trol valve by turning the power transistor in the 
ECM "ON" and "OFF".

.

TECHNICAL DESCRIPTION

• The exhaust engine oil control valve change the 

phase angle to operate the MIVEC system in the 
advance or retard side in accordance with the 
signals from the ECM.

.

DESCRIPTIONS OF MONITOR METHODS

Exhaust engine oil control valve circuit current is less 

than specified value.

.

MONITOR EXECUTION

Continuous

.

MONITOR EXECUTION CONDITIONS 
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be 

normal)

• Camshaft position sensor
• Crankshaft position sensor
• Engine coolant temperature sensor
• Throttle position sensor
• Engine oil control valve

.

AK704226

Connector: A-34X

MFI relay

A-34X

AB

AK704255AB

Connector: A-39

A-39 (B)

AK704293

AB

Exhaust engine
oil control valve

Connector: B-01

B-01

AK704227

Connector: B-09

ECM

B-09 (GR)

AB