Mitsubishi Outlander GS45X. Manual - part 887

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-481

(2) Connect the evaporative emission system pressure pump 

(Miller number 6872A) to the fuel filler hose.

(3) Plug the hose and the nipple shown in the illustration.

NOTE: If these items are not securely plugged now, the fuel 
could leak in the next step.

(4) Pressurize the fuel tank with the evaporative emission 

system pressure pump.

(5) In the pressurized state, check for leaks by applying a 

soapy water solution to each section and look for bubbles.

Q: Are any leaks found?

YES <When there is a leak from the attachment points of 
the fuel pump module, fuel tank differential pressure 
sensor, fuel level sensor (sub) or leveling valve.> : 

Repair or replace the leaked parts and check again 
that there are no leaks. Then reinstall the fuel tank 
(Refer to GROUP 13C, Fuel Tank <FWD> 

P.13C-15

 

or Fuel Tank <AWD> 

P.13C-20

). Then go to Step 12 .

YES <When there is a leak from the fuel tank.> : Replace 

the fuel tank (Refer to GROUP 13C, Fuel Tank 
<FWD> 

P.13C-15

 or Fuel Tank <AWD> 

P.13C-20

). 

Go to Step 12 

NO :  When there is no leak, reinstall the fuel tank (Refer to 

GROUP 13C, Fuel Tank <FWD> 

P.13C-15

 or Fuel 

Tank <AWD> 

P.13C-20

). Then go to Step 11 .

STEP 10. Check the evaporative emission canister for 
vacuum leaks.
(1) Connect a hand vacuum pump to the evaporative emission 

canister and plug the other nipples.

(2) Apply a pressure on the hand vacuum pump, and confirm 

that air is maintained.

(3) Disconnect the hand vacuum pump and remove the plugs.
Q: Is the evaporative emission canister in good condition?

YES : Go to Step 11 .
NO :  Replace the evaporative emission canister (Refer to 

GROUP 17, Evaporative emission canister and fuel 
tank pressure relief valve removal and installation 

P.17-87

). Then go to Step 12 .

AK704169

AK704170AC

AK704171

Plugs

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-482

STEP 11. Using scan tool MB991958, check the 
evaporative emission system monitor test.

CAUTION

• During this test, the ECM automatically increases the 

engine speed to 1,600 r/min or greater. Check that the 
transaxle is set to "P" position.

(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTCs using scan tool MB991958.
(3) Check that the fuel cap is securely closed (Tighten until 

three clicks are heard).

(4) Start the engine.
(5) Select "System Test."
(6) Select "Evap Leak Mon."
(7) During the test, keep the accelerator pedal at the idle 

position.

(8) Keep the engine speed and engine load within the specified 

range. When the monitor test starts, the "In Progress" item 
on scan tool MB991958 will change from "NO" to "YES".

(9) Turn the ignition switch to the "LOCK" (OFF) position. 
Q: Is "Evap Leak was detected." displayed on scan tool 

MB991958?
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 

Code Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

. Then go to Step 12 .

NO <"Evap Leak Monitor test passed" is displayed on 
scan tool MB991958.> : The evaporative emission system 

is working properly at this time. Go to Step 12  .

NO <"Evap Leak Monitor discontinued. Once turn the IG 
off then retest again from the beginning." is displayed 
on scan tool MB991958.> : The EVAP monitor has been 

interrupted during the test. Turn the ignition switch to 
the "LOCK" (OFF) position once, and repeat the 
monitoring from Step 11 .

STEP 12. Perform the OBD-II drive cycle.
(1) Confirm the repair by performing the appropriate drive cycle 

(Refer to Diagnostic Function 

− OBD-ll Drive Cycle − 

Pattern 5 

P.13B-11

).

(2) Read the DTC.
Q: Is DTC P0442 set?

YES : Repeat the troubleshooting.
NO :  The procedure is complete.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-483

DTC P0443: Evaporative Emission Control System Purge Control Valve Circuit

2

1

AK700152

1

2

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10 111213 14 1516 17 1819 20

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37

1

2

4

A-13

B-07

MU802779

B-10

20A

WHITE

WHITE

WHITE

BR

O

WN-WHITE

WHITE

A-33X

4

3

1

2

22

36

FUSIBLE LINK

OFF

ON

AB

EVAPORATIVE EMISSION PURGE SOLENOID CIRCUIT

EVAPORATIVE EMISSION
PURGE SOLENOID

RELAY BOX
(ENGINE COMPARTMENT)

TO ECM

ENGINE
CONTROL
MODULE

MFI
RELAY

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-484

.

CIRCUIT OPERATION

• The evaporative emission purge solenoid power 

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

• The ECM controls ground evaporative emission 

purge solenoid by turning the power transistor in 
the ECM "ON" and "OFF".

.

TECHNICAL DESCRIPTION

• To judge if there is open circuit in the evaporative 

emission purge solenoid drive circuit, the ECM 
measures the surge voltage of the evaporative 
emission purge solenoid coil.

.

DESCRIPTIONS OF MONITOR METHODS

Off-surge does not occur after solenoid is operated 

from on to off.

.

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

.

AK700399AB

MFI relay

A-33X

Connector: A-33X

AK900602

Connector: A-13

A-13

AB

AK900147

B-07 (B)

Connector: B-07

AD

Evaporative emission
purge solenoid

AK700401AB

ECM

B-10 (GR)

Connector: B-10