Mitsubishi Eclipse. Manual - part 526

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-647

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions

• Engine is being cranked.

• Battery positive voltage is at between 10 and 

16.5 volts.

Judgment Criteria

• The evaporative emission purge solenoid coil 

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

• The ECM <M/T> or PCM <A/T> monitors for this 

condition once during the drive cycle.

Check Conditions

• Battery positive voltage is at between 10 and 

16.5 volts.

• ON duty cycle of the evaporative emission purge 

solenoid is between 10 and 90 percent.

• ON duty cycle of the EGR vacuum regulator sole-

noid valve is 0 percent.

• Evaporative emission ventilation solenoid is OFF.

• More than 1 second has elapsed after the above 

mentioned conditions have been met. 

Judgment Criteria

• The evaporative emission purge solenoid coil 

surge voltage (battery positive voltage + 2 volts) 
is not detected for 1 second. When the evapora-
tive emission purge 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 purge solenoid failed.

• Open or shorted evaporative emission purge 

solenoid circuit, or harness damage, or connector 
damage.

• ECM failed. <M/T>

• PCM failed. <A/T>

MONITORING

CONDITIONS

NO

NO

YES

YES

GOOD

MALFUNCTION

WAS SURGE VOLTAGE

(> V

B

+2V) DETECTED?

START

END

AK301449

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-648

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 08: 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 

08, 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 

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-649

STEP 2. Check connector B-33 at the evaporative emission 
purge 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.

AK300427

1

2

AB

CONNECTOR: B-33 <WITHOUT INTAKE 
MANIFOLD TUNING  SYSTEM>

B-33 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300431

1

2

CONNECTOR: B-33 <WITH INTAKE 
MANIFOLD TUNING  SYSTEM>

AB

B-33 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-650

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

connector B-33.

(2) Measure the resistance between evaporative emission 

purge solenoid side connector terminal 1 and 2.

Standard value: 30 

− 34 ohms [at 20°C (68°F)]

Q: Is the resistance between 30 and 34 ohms?

YES : Go to Step 4.
NO :  Replace the evaporative emission purge solenoid. 

Then go to Step 12.

AK300427

1

2

AB

CONNECTOR: B-33 <WITHOUT INTAKE 
MANIFOLD TUNING  SYSTEM>

B-33 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300431

1

2

CONNECTOR: B-33 <WITH INTAKE 
MANIFOLD TUNING  SYSTEM>

AB

B-33 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AKX00342