Mitsubishi Outlander GS45X. Manual — part 635

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-363

STEP 4. Check the trouble symptoms.
(1) Carry out a test drive with the drive cycle pattern. Refer to

Diagnostic Function

− OBD-II Drive Cycle − Pattern 15

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0304 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 5.

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 5. 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 15

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0304 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-364

DTC P0327: Knock Sensor Circuit Low

.

AK801000

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

2

2

1

3

KNOCK SENSOR CIRCUIT

KNOCK SENSOR

B-10

25

GREEN

BLUE

42

1

2

AB

B-06

(MU802722)

GREEN

BLUE

2

1

B-24

MU802603

ENGINE
CONTROL
MODULE

AK704124AB

Connector: B-24

B-24 (B)

AK704125AB

Knock sensor

Starter assembly

Cylinder
head cover
assembly

Connector: B-06

B-06 (B)

AK704090AB

Connector: B-10

B-10 (GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-365

CIRCUIT OPERATION

• The knock sensor (terminal No. 2) sends a signal

voltage to the ECM (terminal No. 25).

• The ground terminal (terminal No. 1) is grounded

with ECM (terminal No. 42).

.

TECHNICAL DESCRIPTION

• The knock sensor converts the vibration of the

cylinder block into a voltage and outputs it.

• The ECM checks whether the voltage is within a

specified range.

.

DESCRIPTIONS OF MONITOR METHODS

Knock sensor output voltage is out of specified

range.

.

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)

• Not applicable

.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-366

DTC SET CONDITIONS

Logic Flow Chart

.

Check Condition

• 2 seconds or more have passed since the engine

starting sequence was completed.

Judgement Criterion

• Knock sensor output voltage has continued to be

lower than 0.5 volt for 2 seconds.

.

FAIL-SAFE AND BACKUP FUNCTION

• Fix the ignition timing with an allowance against

knock.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 23

P.13A-11

.

.

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

• Knock sensor failed.

• Open or shorted knock sensor circuit or connec-

tor damage.

• ECM failed.

End

Malfunction

No

No

No

Output voltage

< 0.5V

Output voltage

> 2.3V

Good

AK704271

No

Start

Yes

Yes

Yes

Yes

Continuous
failure for 2secs

Monitoring
conditions