Mitsubishi Outlander GS45X. Manual — part 647

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-411

STEP 1. Using scan tool MB991958, check the evaporative
emission system monitor test.

CAUTION

• To prevent damage to scan tool MB991958, always turn

the ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

• During this test, the ECM will automatically increase

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

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

three clicks are heard).

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

position.

(9) 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".

(10) Turn the ignition switch to the "LOCK" (OFF) position, and

disconnect scan tool MB991958.

Q: Is "Evap Leak Mon. Completed. Test Failed and DTCs

Set" displayed on scan tool MB991958?
YES : A malfunction has been detected during the monitor

test. Refer to the Diagnostic Trouble Code Chart and
diagnose any other DTCs that are set

P.13A-49

. If no

other DTC's have been set, go to Step 2 .

NO <"Evap Leak Mon. Completed. Test Passed" is
displayed on scan tool MB991958.> : The evaporative

emission system is working properly at this time.
Explain to the customer that an improperly tightened
fuel cap can cause the MIL to illuminate. Return the
vehicle to the customer.

NO <"Evap Leak Mon. Discontinued. Retest again from
the first" 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 1 .

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-412

STEP 2. Check the evaporative emission purge solenoid
for leaks.
(1) Disconnect hose A from the evaporative emission purge

solenoid.

(2) Connect the hose of the hand pump (pressure-application

type) to the chamber side nipple of the evaporative
emission purge solenoid.

(3) Use the hand pump (pressure-application type) to confirm

that the evaporative emission purge solenoid holds
vacuum.

(4) Connect hose A to the evaporative emission purge

solenoid.

Q: Does the evaporative emission purge solenoid hold

pressure?
YES : Go to Step 3 .
NO : Replace the evaporative emission purge solenoid.

Then go to Step 13 .

STEP 3. Check for leaks in evaporative emission hose A,
chamber and hose B.
(1) Use a hand vacuum pump to check hose A, chamber and

hose B.

Q: Do the hoses and chamber hold vacuum?

YES : Go to Step 4 .
NO : Replace any damaged hose. Then go to Step 13 .

STEP 4. Check for leaks in evaporative emission hose C.
(1) Use a hand vacuum pump to check hose C.
Q: Does hose C hold vacuum?

YES : Go to Step 5 .
NO : Replace any damaged hose. Then go to Step 13 .

AK604272AB

Hose A

Evaporative
emission purge
solenoide

AK604273AB

Hose B

Chamber

Hose A

AK604274AB

Hose C

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-413

STEP 5. Using scan tool MB991958, check actuator test
item 15: Evaporative emission ventilation solenoid.
(1) Remove the canister cover.
(2) Remove the evaporative emission ventilation solenoid. Do

not disconnect the connector.

(3) Connect the hose of the hand vacuum pump to the canister

side nipple of the evaporative emission ventilation solenoid.

(4) Turn the ignition switch to the "ON" position.
(5) Set scan tool MB991958 to actuator testing mode for item

15: Evaporative Emission Ventilation Solenoid.

• While the evaporative emission ventilation solenoid is

energized, operate the hand vacuum pump and confirm
that the solenoid holds vacuum.

(6) Turn the ignition switch to the "LOCK" (OFF) position.
(7) Disconnect the hand vacuum pump, and reinstall the

evaporative emission ventilation solenoid.

(8) Reinstall the canister cover.
Q: Did the evaporative emission ventilation solenoid hold

vacuum?
YES : Go to Step 6 .
NO : Replace the evaporative emission ventilation solenoid

Then go to Step 13 .

AK704158AB

Evaporative emission
ventilation solenoid

Evaporative emission
ventilation solenoid

Intake manifold
side nipple

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-414

STEP 6. Perform the pressure test on the evaporative
emission system.
(1) Disconnect hose D from the canister while holding the

release buttons indicated in the illustration pressed by
fingers.

(2) Plug the disconnected end of hose D.
(3) Confirm that the evaporative emission system pressure

pump (Miller number 6872A) is operating properly. Perform
the self-test as described in the pump manufacturer's
instructions.

(4) Remove the fuel cap.

(5) Connect the evaporative emission system pressure pump

(Miller number 6872A) to the fuel tank filler tube by using
fuel tank adapter (MLR-8382).

(6) Pressure test the system to determine whether any leaks

are present.
NOTE: The "Pressure test" in this procedure refers to the
I/M240 Simulation Test. The eight steps of this test are
described in the manufacturer's instructions for the evapo-
rative emission system pressure pump, Miller number
6872A.

(7) Remove the evaporative emission system pressure pump

(Miller number 6872A) and the fuel tank adapter
(MLR-8382), and reinstall the fuel cap.

(8) Connect hose D to the evaporative emission canister.
Q: Is the evaporative emission system line free of leaks?

YES : Go to Step 11 .
NO : Go to Step 7 .

AK704161

Hose D

AC

AK704159

Hose D

Plug

AC

AK704160