Mitsubishi Galant (2004+). Manual - part 954

 

  Index      Mitsubishi     Mitsubishi Galant - service repair manual 2004 year

 

Search            

 

 

 

 

 

 

 

  

 

Content   ..  952  953  954  955   ..

 

 

Mitsubishi Galant (2004+). Manual - part 954

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-633

DTC P0446: Evaporative Emission Control System Vent Control Circuit

1

2

3

4

1 2 3 4

5 6 7

8 9 10 11

12 13 14

15 16 17 18

AK303871

RED-

WHITE

RED-

WHITE

MFI RELAY

BATTERY

2

2

4

2

B-17X

A-13

C-25

1

3

1

2

POWERTRAIN
CONTROL
MODULE (PCM)

1 2

F-08

MU802779

EVAPORATIVE
EMISSION
VENTILATION
SOLENOID

Evaporative Emission Ventilation Solenoid Circuit

RED

RED

RED

9

12

YELLO

W

YELLO

W

B-19

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-634

.

CIRCUIT OPERATION

• The evaporative emission ventilation solenoid 

power is supplied from the MFI relay (terminal 
No. 4).

• The PCM controls the evaporative emission ven-

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

.

TECHNICAL DESCRIPTION

• To judge if there is open circuit in the evaporative 

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

• The PCM drives the evaporative emission venti-

lation solenoid. After the solenoid is turned off, 
the PCM 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

.

AK303868AB

EVAPORATIVE 
EMISSION
VENTILATION 
SOLENOID

CONNECTOR: F-08

F-08 (B)

AK303147

CONNECTOR: B-19

PCM

AB

AIR CLEANER

B-19 (B)

AK303803AB

CONNECTOR: B-17X

MFI RELAY

B-17X

AK303872AB

A-13 (GR)

CONNECTOR: A-13

AK303838AB

C-25

CONNECTOR: C-25

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-635

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions

• Engine is being cranked.

• Battery positive voltage is between 10 and 16.5 

volts.

Judgment Criteria

• The evaporative emission ventilation solenoid 

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

• The PCM 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 0 percent.

• Evaporative emission ventilation solenoid is ON.

• More than 1 second has elapsed after the above 

mentioned conditions have been met. 

Judgment Criteria

• 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 − 

Procedure 6 

− Other Monitor 

P.13A-5

.

.

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.

• PCM failed. 

MONITORING

CONDITIONS

NO

NO

YES

YES

GOOD

MALFUNCTION

WAS SURGE VOLTAGE

(> V

B

+2V) DETECTED?

START

END

AK302039

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-636

DIAGNOSIS

Required Special Tools:

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

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

• MB991923: Power Plant ECU Check Harness

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.

STEP 2. Check harness connector F-08 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 12.

AK303804AB

MB991910

DATA LINK
CONNECTOR

MB991824

MB991827

AK303873

1

2

AB

CONNECTOR: F-08

F-08 (B)

HARNESS 
CONNECTOR:
COMPONENT SIDE

 

 

 

 

 

 

 

Content   ..  952  953  954  955   ..