Mitsubishi Eclipse. Manual - part 530

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-663

Judgment Criteria

• The evaporative emission ventilation solenoid 

coil surge voltage (battery positive voltage + 2 
volts) is not detected for 1 second. When the 
evaporative emission ventilation solenoid is 
turned OFF.

.

OBD-ll DRIVE CYCLE PATTERN
Refer to , Diagnostic Function 

− OBD-ll Drive Cycle − 

Procedure 6 

− Other Monitor 

P.13B-7

.

.

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, or harness damage, or connector 
damage.

• ECM failed. <M/T>

• PCM failed. <A/T>

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991911: Main Harness B

STEP 1. Using scan tool MB991958, check actuator test 
item 29: 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 

29, 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 

P.00-6

.

NO :  Go to Step 2.

AK300810

AB

MB991911

16-PIN

MB991827

MB991824 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-664

STEP 2. Check connector D-10 at the evaporative emission 
ventilation solenoid for damage.
Q: Is the 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 12.

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

connector D-10.

(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 resistance between 17 and 21 ohms?

YES : Go to Step 4.
NO :  Replace the over vent valve module. Then go to Step 

12.

AK300452

1

2

CONNECTOR: D-10

AB

D-10 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300452

1

2

CONNECTOR: D-10

AB

D-10 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK000004

2

1

EVAPORATIVE EMISSION
VENTILATION SOLENOID

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-665

STEP 4. Check the power supply voltage at evaporative 
emission ventilation solenoid harness side connector 
D-10.
(1) Disconnect the connector D-10 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 connector A-18X at MFI relay for damage.
Q: Is the connector in good condition?

YES : Check connectors C-28, C-90 and D-16 at 

intermediate connector 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-18X (terminal No. 4) 
and evaporative emission ventilation solenoid 
connector D-10 (terminal No. 2) because of open 
circuit or short circuit to ground. Then go to Step 12.

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

Connector Inspection 

P.00E-2

. Then go to Step 12.

AK300452

1

2

CONNECTOR: D-10

AB

D-10 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01502

1

2

D-10 HARNESS
SIDE CONNECTOR

AI

AK300454

2

1

3

4

CONNECTOR: A-18X

AB

A-18X

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-666

STEP 6. Check the power supply voltage at ECM connector 
C-51 <M/T> or PCM connector C-52 <A/T> by backprobing.
(1) Do not disconnect the connector C-51 <M/T> or C-52 

<A/T>.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 35 and ground by 

backprobing.

• 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 9.
NO :  Go to Step 7.

AK300443

2

3

4

5

6

7

8

9

11

12

13

14

15

16

17

18

19

20

30

21

22

23

24

25

26

27

28

29

31

32

33

34

35

1

10

CONNECTOR: C-51 <M/T>

C-51 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300458

2

3

4

5

6

7

8

9

11

12

13

14

15

16

17

18

19

20

30

21

22

23

24

25

26

27

28

29

31

32

33

34

35

1

10

CONNECTOR: C-52 <A/T>

C-52 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01548

1

2

3 4

5 6

7 8

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

C-51<M/T>, C-52<A/T>
HARNESS CONNECTOR:
HARNESS SIDE

AG

9