Mitsubishi Outlander GS45X. Manual — part 665

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-483

DTC SET CONDITIONS

Logic Flow Chart (Monitor Sequence)

.

Check Conditions

Conditions

• Engine coolant temperature is 36°C (97°F) or

less when the engine is started.

• Intake air temperature is 36°C (97°F) or less

when the engine is started.

• Engine coolant temperature is higher than 20°C

(67

°F).

• When the evaporative emission purge solenoid

and evaporative emission ventilation solenoid are
closed, the pressure in the fuel tank is less than
324 Pa (0.09 in.Hg).

• Amount of remaining fuel is 40 − 85 percent of

capacity.

• Barometric pressure is higher than 76 kPa (22.4

in.Hg).

• Intake air temperature is higher than −10°C

(14

°F)

AK604523

Start

Yes

No

Monitoring
conditions?

Depressurize fuel tank pressure

Yes

Yes

No

No

Gross leak

monitoring conditions

Shut purge line

Specified times

have passed

Malfunction

(Gross leak)

Measure reverting
pressure: PFT

Yes

Yes

No

No

PFT > PT

Specified times

monitored

Malfunction

End

Good

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-484

• Fuel tank temperature is less than 33°C (91°F).

• Fuel tank differential pressure sensor output volt-

age is 1.0

− 4.0 volts.

• At least 10 seconds have passed since the last

monitor was complete.

Judgement Criterion

• Internal pressure of the fuel tank has changed

more than 1,177

− 1,497 Pa (0.177 − 0.217 psi) in

88 seconds after the tank and vapor line were
closed.

.

OBD-ll DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 6

P.13A-11

.

.

TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CODE TO BE
SET ARE:)

• Loose fuel cap.

• Fuel cap relief pressure is incorrect.

• Malfunction of the evaporative emission canister

seal.

• Malfunction of the fuel tank, purge line or vapor

line seal.

• Malfunction of the evaporative emission ventila-

tion solenoid.

DIAGNOSIS

Required Special Tools:

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

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-485

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-486

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 or chamber. 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