Mitsubishi Outlander GS45X. Manual — part 645

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-403

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 4

P.13A-11

.

.

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

• Catalytic converter deteriorated.

• ECM failed.

DIAGNOSIS

STEP 1. Replace the catalytic converter.
(1) Replace the catalytic converter.
(2) Carry out a test drive with the drive cycle pattern. Refer to

Diagnostic Function

− OBD-II Drive Cycle − Pattern 4

P.13A-11

.

(3) Check the diagnostic trouble code (DTC).
Q: Is DTC P0420 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

.

NO : The inspection is complete.

DTC P0441: Evaporative Emission Control System Incorrect Purge Flow

.

TECHNICAL DESCRIPTION

• ECM detects a stuck open condition of evapora-

tive emission purge solenoid and a stuck closed
condition of evaporative emission ventilation
solenoid by pressure change in fuel tank.

• Stuck open evaporative emission purge solenoid

is judged through monitoring leak of evaporative
emission system.

• Stuck closed evaporative emission ventilation

solenoid is judged after 20 seconds from end of
monitoring leak of evaporative emission system,
or of usual operation of evaporative emission
purge solenoid from ON to OFF.

.

DESCRIPTIONS OF MONITOR METHODS

Fuel tank pressure decreases largely during

purge-cut.

.

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)

• Fuel tank pressure sensor monitor

AK704131

Evaporative emission
purge solenoid

Exhaust gas
recirculation
(EGR) valve

AB

Connector: B-07

B-07 (B)

AK704132

AB

Evaporative emission
ventilation solenoid

Spare tire

Connector: D-116

D-116 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-404

Sensor (The sensor below is determined to be

normal)

• Not applicable

.

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

• Engine is running.

• ON duty cycle of the evaporative emission purge

solenoid is 0 percent.

• 20 seconds have elapsed since the duty cycle of

the evaporative emission purge solenoid has
turned to 0 percent.

Judgement Criterion

• The pressure in the fuel tank is −1.96 kPa (−0.58

in.Hg) or less for 0.1 second.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 5

P.13A-11

.

.

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

• Evaporative emission purge solenoid failed.

• Evaporative emission ventilation solenoid failed.

• Fuel tank differential pressure sensor circuit

related part(s) failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

AK604338

Good

Malfunction

End

No

No

No

No

No

Fuel-tank pressure

< -1.96kPa (-0.58 in. Hg)

Reverting pressure

detected during

evap. monitor?

Start

Yes

Yes

Yes

Yes

Yes

Continuous

failure for 100msec

Monitoring conditions for

malfunction detection?

Monitoring conditions for

pass judgement?

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-405

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0451 set?

YES : Refer to DTC P0451

− Evaporative Emission Control

System Pressure Sensor Range/Performance

P.13A-442

.

NO : Go to Step 2.

STEP 2. Using scan tool MB991958, check data list item 52:
Fuel Tank Differential Pressure Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Remove the fuel cap.
(3) Set scan tool MB991958 to the data reading mode for item

52, Fuel Tank Differential Pressure Sensor.

• The fuel tank differential pressures should be 1,500 and

3,500 millivolts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the fuel tank pressure between 1,500 and 3,500

millivolts?
YES : Go to Step 3.
NO : Refer to DTC P0451

− Evaporative Emission Control

System Pressure Sensor Range/Performance

P.13A-442

.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-406

STEP 3. Using scan tool MB991958, check actuator test
item 10: Evaporative Emission Purge Solenoid.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the actuator test mode for item

10, Evaporative emission purge solenoid.

• An operation sound should be heard and vibration

should be felt when the evaporative emission purge
solenoid is operated.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?

YES : Go to Step 4.
NO : Replace the evaporative emission purge solenoid.

Then go to Step 5.

STEP 4. Using scan tool MB991958, check actuator test
item 15: Evaporative Emission Ventilation Solenoid.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the actuator test mode for item

15, Evaporative emission ventilation solenoid.

• An operation sound should be heard and vibration

should be felt when the evaporative emission ventilation
solenoid is operated.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?

YES : Repair or replace the vent hose and air filter. Then go

to Step 5.

NO : Replace the evaporative emission ventilation

solenoid. Then go to Step 5.

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 5

P.13A-11

.

(2) Read the diagnostic trouble code.
Q: Is DTC P0441 set?

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