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

TSB Revision

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

TSB Revision

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

TSB Revision

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