Mitsubishi Outlander XL. Manual — part 334

ZK603612 AA00

Evaporative emission
ventilation solenoid

Spare tire

B-116 (GR)

Connector: B-116

TECHNICAL DESCRIPTION

｠

The ECM monitors the Evaporative Emission
(EVAP) System pressure.

｠

The ECM controls the evaporative emission
ventilation solenoid. It closes the evaporative
emission ventilation solenoid to seal the
evaporative emission canister side of the system.

｠

The evaporative emission purge solenoid is opened
to allow manifold vacuum to create low pressure
(vacuum) in the EVAP system.

｠

When the EVAP system develops a vacuum of 2
kPa (0.29 psi), the evaporative emission purge
solenoid is closed and the fuel system vacuum is
maintained at 2 kPa (0.29 psi).

｠

The ECM determines whether there is a leak in the
EVAP system by monitoring the vacuum inside the
fuel tank.

｠

The test is stopped when fuel vapor pressure
exceeds predetermined limits.

DESCRIPTIONS OF MONITOR METHODS

｠

Measure reverting pressure after depressurizing by
intake manifold negative pressure and detect
malfunction if reverting pressure rises largely.

MONITOR EXECUTION

｠

Once per driving cycle.

MONITOR EXECUTION CONDITIONS (OTHER
MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored in
memory for the item monitored below)

｠

Evaporative emission purge solenoid monitor

｠

Evaporative emission purge system monitor

｠

Fuel tank differential pressure sensor monitor

｠

Evaporative emission ventilation solenoid monitor

｠

Fuel level sensor monitor

｠

Fuel temperature sensor monitor

Sensor (The sensors below are determined to be
normal)

｠

Mass airflow sensor

｠

Barometric pressure sensor

｠

Intake air temperature sensor

｠

Engine coolant temperature sensor

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-531

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITIONS

Logic Flow Chart <0.02 in leak monitor>

ZK603437

Pt : Threshold value

Open cani ster vent solenoi d

Open purge solenoi d

N = N + 1

N = 0

M = 1

PF2 = PFT

Close purge solenoi d

Gross leak

Monitoring condi tions?

100 s ecs have

Pass ed?

Malfunction

(Gross leak)

End

PF1 = Fuel tank press ure (PFT)

Monitoring condi tions

20 s ecs have pass ed?

50 s ecs have pass ed?

128 s ecs have pass ed?

PFT = PF2

－

PF1

> 33 mmAq

PFT > -200mmAq

Start

A

A

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

Yes

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

600 s ecs have

Pass ed?

Open cani ster

Vent solenoi d

End

Malfunction
(0.020 leak)

N = 3

N = 2

Logic Flow Chart

AA00

Open cani ster vent solenoi d

Good

Open cani ster vent solenoi d

10 secs have pass ed?

PFT < -400mmAq

PFT (n) > PFT (n-1)

PFT2 > Pt

End

PF3 = PFT

M = M + 1

PF4 = PFT

PFT2 = PF4

－

PF3

Close cani ster vent solenoid & purge solenoid

13Ab-532

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

Check Conditions

Conditions A: At Start up

｠

Intake air temperature is 36°C (97°F) or less when
the engine is started.

｠

The engine coolant temperature is 36°C (97°F) or
less when the engine is started.

｠

The fuel level sensor output voltage is 2.4 - 3.7 volts
when the engine starts and the amount of remaining
fuel is 40 - 85 percent of capacity.

Conditions B: For Test to Run

｠

Barometric pressure is greater than 76 kPa (11 psi).

｠

The fuel temperature is 33°C (91°F) or less.

｠

Fuel tank differential pressure sensor output
voltage is 1 to 4 volts.

Conditions C: For Test to Stop

｠

Engine coolant temperature is greater than 20°C
(68°F).

｠

Intake air temperature is greater than -10°C (14°F).

｠

When the evaporative emission purge solenoid and
evaporative emission ventilation solenoid are
closed, the pressure rises in the fuel tank is less
than 324 Pa (0.047 psi).

｠

10 seconds have elapsed from the start of the
previous monitoring.

｠

Monitoring time: 10 - 14 minutes.

Judgement Criteria

｠

Internal pressure of the fuel tank has changed more
than 1,177 - 1,373 Pa (0.177 - 0.199 psi) in 128
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.13Ab-8.

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 ventilation
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 INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-533

DIAGNOSTIC TROUBLE CODE PROCEDURES

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

ZC501967

AC404789

ZC501968

MB991824

MB991827

MB991910

Data link

connector

AA00

｠

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.13Ab-44. 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.

13Ab-534

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES