Mitsubishi Outlander GS45X. Manual — part 651

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-427

.

CIRCUIT OPERATION

• The evaporative emission ventilation solenoid

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

• The ECM controls the evaporative emission ven-

tilation solenoid ground by turning the power tran-
sistor in the ECM ON and OFF.

.

TECHNICAL DESCRIPTION

• To judge if there is open circuit in the evaporative

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

• The ECM drives the evaporative emission venti-

lation solenoid. After the solenoid is turned off,
the ECM will check if the solenoid coil produces a
surge voltage (battery positive voltage + 2 volts).

.

DESCRIPTIONS OF MONITOR METHODS

Off-surge does not occur after solenoid is operated

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

.

AK704088

MFI relay

AB

Connector: A-33X

A-33X

AK704097AB

Connector: B-11

B-11 (GR)

AK900595

Connector: C-129

C-129

AB

AK704134

AB

Connector: D-113

D-113

AK704132

AB

Evaporative emission
ventilation solenoid

Spare tire

Connector: D-116

D-116 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-428

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 ventilation 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 0 percent.

• Evaporative emission ventilation solenoid is ON.

• More than 1 second has elapsed after the above

mentioned conditions have been met.

Judgement Criterion

• The evaporative emission ventilation solenoid

coil surge voltage (battery positive voltage + 2
volts) is not detected for 1 second after the evap-
orative emission ventilation 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 ventilation solenoid failed.

• Open or shorted evaporative emission ventilation

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-429

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 15: Evaporative Emission Ventilation 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

15, Evaporative emission ventilation solenoid.

• An operation sound should be heard and vibration

should be felt when the evaporative emission ventilation
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 to

Cope with Intermittent Malfunctions

P.00-15

.

NO : Go to Step 2.

STEP 2. Check harness connector D-116 at the evaporative
emission ventilation 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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-430

STEP 3. Check the evaporative emission ventilation
solenoid.
(1) Disconnect the evaporative emission ventilation solenoid

connector D-116.

(2) Measure the resistance between evaporative emission

ventilation solenoid side connector terminal No. 1 and No.
2.

Standard value: 17

− 21 ohms [at 20°C (68°F)]

Q: Is the measured resistance between 17 and 21 ohms [at

20

°C (68°F)]?

YES : Go to Step 4.
NO : Replace it. Then go to Step 10.

STEP 4. Measure the power supply voltage at evaporative
emission ventilation solenoid harness side connector
D-116.
(1) Disconnect the connector D-116 and measure at the

harness side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 2 and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)

present?
YES : Go to Step 6.
NO : Go to Step 5.

STEP 5. Check harness connector A-33X at MFI relay for
damage.
Q: Is the harness connector in good condition?

YES : Check connectors D-113 and C-129 at intermediate

connectors for damage, and repair or replace as
required. Refer to GROUP 00E, Harness Connector
Inspection

P.00E-2

. If intermediate connectors are in

good condition, repair harness wire between MFI
relay connector A-33X (terminal No. 2) and
evaporative emission ventilation solenoid connector
D-116 (terminal No. 2) because of open circuit or
short circuit to ground. Then go to Step 10.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 10.

1 2

AK202969

Evaporative emission
ventilation solenoid
connector

AC

1

2

AK704136

D-116 harness
connector:
component side

AB