Mitsubishi Outlander GS45X. Manual - part 565

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-83

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

• Engine speed is between 594 r/min and 1,500 

r/min.

• Engine coolant temperature is between 20°C 

(68

°F) and 88°C (190°F).

• Exhaust engine oil control valve is "OFF".

• 1 second has elapsed after the above mentions 

have been met.

Judgment Criterion

• The close timing of the exhaust valve is faster 

than 

−7.7 degrees (ATDC) for 10 seconds.

or

• The close timing of the exhaust valve is slower 

than 5.4 degrees (ATDC) for 10 seconds.

.

OBD-II DRIVE CYCLE PATTERN

• Refer to Diagnostic Function − OBD-II Drive 

Cycle 

− Pattern 20 

P.13A-11

.

.

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

• Timing chain in out of place.

• Loose timing chain.

• Exhaust variable valve timing sprocket tooth 

coming off.

• ECM failed.

AK900350

Good

Malfunction

End

No

No

No

No

No

Cam angle

< 

θ MIN

Cam angle

>

 

θ MAX

Start

Yes

Yes

Yes

Yes

Yes

Continuous

failure for 10secs

Monitoring
conditions

Engine oil control valve 

solenoid activation 

command OFF

Cam angle: Intake valve open timing (intake side)
                   Exhaust valve close timing (exhaust side)

θ MAX      : Maximum threshold value

θ MIN       : Minimum threshold value 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-84

DIAGNOSIS

Required Special Tools

• MB991709: Test Harness

• MB992110: Power Plant ECU Check Harness

STEP 1. Using the oscilloscope, measure output wave 
pattern at crankshaft position sensor and exhaust 
camshaft position sensor.
(1) Disconnect the crankshaft position sensor connector B-119 

and connect the test harness special tool (MB991709) 
between the separated connectors.

(2) Connect the oscilloscope probe to the crankshaft position 

sensor side connector terminal No. 3.

(3) Disconnect the exhaust camshaft position sensor connector 

B-22, and connect test harness special tool (MB991709) 
between the separated connectors.

(4) Connect the oscilloscope probe to the exhaust camshaft 

position sensor side connector terminal No. 3.
NOTE: When measuring with the ECM side connector, dis-
connect all ECM connectors. Connect the check harness 
special tool (MB992110) between the separated connec-
tors. Then connect the oscilloscope probe to the check har-
ness connector terminal No. 8 (crankshaft position sensor) 
and terminal No. 7 (exhaust camshaft position sensor).

(5) Start the engine and run at idle.

(6) Check the waveform.

• The waveform should show a pattern similar to the illus-

tration.

(7) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the waveform normal?

YES : Go to Step 2.
NO :  Go to Step 3.

AK704086

3

2

1

AB

Crankshaft position
sensor connector

Oscilloscope

MB991709

AK604465

3

2

1

AE

Exhaust camshaft position
sensor connector

Oscilloscope

MB991709

AK704579AB

2 engine revolutions

Normal waveform

(Volt)

5

0

5

0

Crankshaft position sensor 
output wave pattern

Exhaust camshaft position sensor
output wave pattern

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-85

STEP 2. Check the trouble symptoms.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− OBD-II Drive Cycle − Pattern 20 

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0017 set?

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

register the ID code. Refer to GROUP 42B, Diagnosis 
− ID Code Registration Judgment Table <Vehicles 

with KOS> 

P.42B-15

 or GROUP 42C, Diagnosis 

− ID 

Codes Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

. Then go to Step 4.

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 3. Check timing mark on the timing chain.
Q: Is timing chain in out of place?

YES : Repair it. Then initialize the learning value for the 

elongation of the timing chain. Refer to GROUP 00, 
Precautions Before Service 

− Timing Chain Learned 

Value Reset 

P.00-55

. Then go to Step 4.

NO :  Check the following items, and repair or replace the 

defective items. 

a. Check the timing chain loose.
b. Check the exhaust variable valve timing 

sprocket tooth coming off.

Then initialize the learning value for the elongation of 

the timing chain. Refer to GROUP 00, Precautions 
Before Service 

− Timing Chain Learned Value 

Reset 

P.00-55

. Then go to Step 4.

STEP 4. 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-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0017 set?

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-86

DTC P0031: Linear Air-Fuel Ratio Sensor Heater Control Circuit Low

AKA00444

1

3

2

4

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

3

2

1

6

5

4

P

1

10 111213 14 1516 17 1819 20

2 3 4

5 6 7 8 9

1

12 13 14 15 16 1718 19 20 2122 2324

2 3 4 5

6 7 8 9 10 11

LINEAR AIR-FUEL RATIO SENSOR HEATER CIRCUIT

20A

WHITE

WHITE

A-33X

MFI
RELAY

RELAY BOX
(ENGINE COMPARTMENT)

4

3

1

2

22

TO ECM

ENGINE
CONTROL
MODULE

34

57

B-10

36

FUSIBLE LINK

OFF

ON

AC

A-13

A-12

WHITE

LIGHT GREEN-BLA

CK

LIGHT GREEN-BLA

CK

GRA

Y

-BLA

CK

GRA

Y

-BLA

CK

LINEAR AIR-FUEL RATIO SENSOR

3

5

2

6

3

4

1

4

TO ECM

TO ECM

TO ECM

C-142