Mitsubishi Outlander GS45X. Manual - part 885

 

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Mitsubishi Outlander GS45X. Manual - part 885

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-473

DTC SET CONDITIONS

Logic Flow Chart (Monitor Sequence)

.

Check Conditions

• Amount of remaining fuel is 15 − 40 percent of 

capacity when the engine is started.

• Engine coolant temperature is less than 36°C 

(97

°F) when the engine is started.

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

when the engine is started.

• Engine coolant temperature is more than 60°C 

(140

°F).

• Intake air temperature is more than −10°C (14°F).

• Fuel temperature is less than 36°C (97°F).

• Power steering pressure switch: "OFF"

• When the evaporative emission purge solenoid 

and evaporative emission ventilation solenoid are 
closed, the change of the pressure in the fuel 
tank is less than 451 Pa (0.13 in.Hg).

• The pressure fluctuation is less than 647 Pa (0.19 

in.Hg).

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

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-474

• Barometric pressure is more than 76 kPa (22.4 

in.Hg).

• Vehicle speed is more than 20 km/h (12 mph).

• Fuel tank differential pressure sensor output volt-

age is between 1.0 and 4.0 volts.

• At least 10 seconds have passed since the last 

monitor was complete.

• Monitoring time: 75 − 125 seconds

Judgement Criterion

• Internal pressure of the fuel tank has changed 

more than 1,010 Pa (0.29 in.Hg) in 20 seconds 
after the tank and vapor lines were closed.
NOTE: 

.

•

The monitoring time (75 

−

 125 seconds) 

depends on the fuel level and the temperature 
in the fuel tank.

•

The next monitoring occurs at least 10 sec-
onds later.

Check Conditions

• Amount of remaining fuel is 40 − 85 percent of 

capacity when the engine is started.

• Engine coolant temperature is less than 36°C 

(97

°F) when the engine is started.

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

when the engine is started.

• Engine coolant temperature is more than 20°C 

(68

°F).

• Intake air temperature is more than −10°C (14°F).

• Fuel temperature is less than 36°C (97°F).

• When the evaporative emission purge solenoid 

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

• Barometric pressure is more than 76 kPa (22.4 

in.Hg).

• Fuel tank differential pressure sensor output volt-

age is between 1.0 and 4.0 volts.

• At least 10 seconds have passed since the last 

monitor was complete.

• Monitoring time: 10 − 14 minutes

Judgement Criterion

• Internal pressure of the fuel tank has changed 

more than 1,922 Pa (0.56 in.Hg) in 88 seconds 
after the tank and vapor lines were closed.
NOTE: 

.

•

The monitoring time (10 

−

 14 minutes) 

depends on the fuel level and the temperature 
in the fuel tank.

•

The next monitoring occurs at least 10 sec-
onds later.

.

OBD-ll DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-ll Drive Cycle − 

Pattern 5 

P.13B-11

.

.

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

• Loose fuel cap.

• Fuel cap relief pressure is incorrect.

• Evaporative emission canister seal is leaking.

• Fuel tank, purge line or vapor line seal is leaking.

• Evaporative emission ventilation solenoid does 

not seal.

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

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-475

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 was detected." 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.13B-50

. If no 

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

NO <"Evap Leak Monitor 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 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 1 .

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-476

STEP 2. Check for leaks in evaporative emission hose A.
(1) Use a hand vacuum pump to check the hose A.
Q: Do the hose hold vacuum?

YES : Go to Step 3 .
NO :  Replace the hose. Then go to Step 12 .

STEP 3. Check the evaporative emission purge solenoid 
for leaks.
(1) Remove the evaporative emission purge solenoid from the 

intake manifold.

(2) Connect the hose of the hand vacuum pump to the intake 

manifold side nipple of the evaporative emission purge 
solenoid.

(3) Use the hand vacuum pump to confirm that the evaporative 

emission purge solenoid holds vacuum.

(4) Replace the O-ring of evaporative emission purge solenoid 

with the new one. Apply a small amount of new engine oil to 
the O-ring.

(5) Tighten the mounting bolts of evaporative emission purge 

solenoid to the specified torque.

Tightening torque: 5.0 

± 1.0 N⋅m

Q: Does the evaporative emission purge solenoid hold 

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

Then go to Step 12 .

AK900455AB

Hose A

AK900124AC

 

 

 

 

 

 

 

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