Mitsubishi Outlander GS45X. Manual — part 649

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-419

DTC P0443: Evaporative Emission Control System Purge Control Valve Circuit

2

1

AK604248

1

2

3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

1

3

2

4

1

10 111213 14 1516 17 1819 20

2 3 4

5 6 7 8 9

37

1

2

4

A-13

B-07

MU802779

B-10

20A

WHITE

WHITE

WHITE

BR

O

WN-WHITE

WHITE

A-33X

4

3

1

2

22

36

FUSIBLE LINK

OFF

ON

AC

RELAY BOX
(ENGINE COMPARTMENT)

ENGINE
CONTROL
MODULE

MFI
RELAY

TO ECM

EVAPORATIVE EMISSION PURGE SOLENOID CIRCUIT

EVAPORATIVE EMISSION
PURGE SOLENOID

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-420

.

CIRCUIT OPERATION

• The evaporative emission purge solenoid power

is supplied from the MFI relay (terminal No. 2).

• The ECM controls ground evaporative emission

purge solenoid by turning the power transistor in
the ECM "ON" and "OFF".

.

TECHNICAL DESCRIPTION

• To judge if there is open circuit in the evaporative

emission purge solenoid drive circuit, the ECM
measures the surge voltage of the evaporative
emission purge solenoid coil.

.

DESCRIPTIONS OF MONITOR METHODS

Off-surge does not occur after solenoid is operated

from on to off.

.

MONITOR EXECUTION

Continuous

.

MONITOR EXECUTION CONDITIONS
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be

normal)

• Not applicable

.

AK704087AB

Connector: A-13

A-13

AK704088

MFI relay

AB

Connector: A-33X

A-33X

AK704090AB

Connector: B-10

B-10 (GR)

AK704131

Evaporative emission
purge solenoid

Exhaust gas
recirculation
(EGR) valve

AB

Connector: B-07

B-07 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-421

DTC SET CONDITIONS
Logic Flow Chart

Check Conditions

• Engine is being cranked.

• Battery positive voltage is between 10 and 16.5

volts.

Judgement Criteria

• The evaporative emission purge solenoid coil

surge voltage (battery positive voltage + 2 volts)
is not detected for 0.2 second.

• The ECM monitors for this condition once during

the drive cycle.

Check Conditions

• Battery positive voltage is between 10 and 16.5

volts.

• ON duty cycle of the evaporative emission purge

solenoid is between 10 and 90 percent.

• Evaporative emission ventilation solenoid is off.

• More than 1 second has elapsed after the above

mentioned conditions have been met.

Judgement Criterion

• The evaporative emission purge solenoid coil

surge voltage (battery positive voltage + 2 volts)
is not detected for 1 second after the evaporative
emission purge solenoid is turned off.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 23

P.13A-11

.

.

TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)

• Evaporative emission purge solenoid failed.

• Open or shorted evaporative emission purge

solenoid circuit, harness damage, or connector
damage.

• ECM failed.

End

No

No

Was surge voltage

(> VB + 2V) detected?

Good

AK604339

Malfunction

Start

Yes

Yes

Monitoring
conditions

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-422

DIAGNOSIS

Required Special Tools:

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

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

• MB992110: Power Plant ECU Check Harness

STEP 1. Using scan tool MB991958, check actuator test
item 10: Evaporative Emission Purge Solenoid.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the actuator test mode for item

10, Evaporative emission purge solenoid.

• An operation sound should be heard and vibration

should be felt when the evaporative emission purge
solenoid is operated.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?

YES : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How

Cope with Intermittent Malfunctions

P.00-15

.

NO : Go to Step 2.

STEP 2. Check harness connector B-07 at the evaporative
emission purge solenoid for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 10.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector