Mitsubishi Outlander XL. Manual — part 331

ZK603430 AA00

Evaporative emission canister

ZK603612 AA00

Evaporative emission
ventilation solenoid

Spare tire

B-116 (GR)

Connector: B-116

ZK603611

Evaporative emission
purge solenoid

AA00

B-07 (B)

Connector: B-07

TECHNICAL DESCRIPTION

｠

The fuel tank may be under a slight pressure or
vacuum depending on the state of the Evaporative
Emission (EVAP) System. The ECM monitors and
responds to these pressure/vacuum changes. If the
pressure/vacuum varies from the specified range,
the ECM will set DTC P0455.

｠

The ECM energizes the evaporative emission
ventilation solenoid to shut off the evaporative
emission canister outlet port.

｠

The evaporative emission purge solenoid is
activated to apply engine manifold vacuum to the
EVAP system.

｠

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

｠

The ECM determines whether there is a leak or clog
in the fuel system by measuring the change in
vacuum inside the fuel tank.

｠

The test is stopped when fuel vapor pressure is
determined to be too high.

DESCRIPTIONS OF MONITOR METHODS

｠

Depressurizing EVAP system by intake manifold
negative pressure is impossible within specified
period.

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-519

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITIONS

Logic Flow Chart <0.04 in leak monitor>

ZK603431

Pt : Threshold value

Close cani ster vent solenoid & purge solenoid

Open cani ster vent solenoi d

Open purge solenoi d

N = N + 1

N = 0

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)

Fuel sloshing detected

Monitoring condi tions

20 s ecs have pass ed?

20 s ecs have pass ed?

PFT = PF2

－

PF1

> 46 mmAq

PFT > -200mmAq

Start

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

No

600 s ecs have

Pass ed?

Open cani ster

Vent solenoi d

End

Malfunction
(0.040 leak)

N = 3

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

20 s ecs have

Pass ed a fter PF3 was

Measured?

End

PF3 = PFT

PF4 = PFT

PFT2 = PF4

－

PF3

13Ab-520

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-521

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITIONS

Check Conditions A: At Start up

｠

Intake air temperature is 36°C (97°F) or less upon
engine start up.

｠

The engine coolant temperature is 36°C (97°F) or
less upon engine start up.

Check Conditions B: For Test to Run

｠

The engine coolant temperature is 60°C (140°F) or
greater and the fuel tank is 15 - 40 percent full.

｠

The engine coolant temperature is 20°C (68°F) or
greater and the fuel tank is 40 - 85 percent full.

｠

The engine speed is greater than 1,600 r/min.

｠

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

｠

Volumetric efficiency is between 20 and 70 percent.

｠

The fuel temperature is 36°C (97°F) or less.

｠

The fuel tank differential pressure sensor output
voltage is 1 - 4 volts.

Check Conditions C: For Test to Stop

｠

The intake air temperature is greater than 5°C (41°
F).

｠

When the evaporative emission purge solenoid and
evaporative emission ventilation solenoid are
closed, the pressure in the fuel tank rises to 451 Pa
(0.065 psi) or less and the amount of remaining fuel
is 15 - 40 percent of capacity upon engine start-up.

｠

When the evaporative emission purge solenoid and
evaporative emission ventilation solenoid are
closed, the pressure in the fuel tank rises to 324 Pa

(0.047 psi) or less and the amount of remaining fuel
is 40 - 85 percent of capacity upon engine start-up.

｠

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

｠

Monitoring time: 150 seconds.

Judgement Criteria

｠

The fuel tank internal pressure is 2 kPa (0.29 psi)
or more after the evaporative emission purge
solenoid valve has been driven when the fuel tank
and vapor line were closed.

OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-ll Drive Cycle -
Pattern 5 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.

｠

Fuel overflow limiter valve failed.

｠

Purge line or vapor line is clogged.

｠

Fuel tank, purge line or vapor line seal failed.

｠

Evaporative emission purge solenoid valve failed.

｠

Evaporative emission ventilation solenoid valve
failed.

｠

Fuel tank differential pressure sensor failed.

｠

Evaporative emission canister seal is faulty.

｠

Evaporative emission canister is clogged.

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

13Ab-522

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES