Mitsubishi Montero (2004+). Manual - part 266

 

  Index      Mitsubishi     Mitsubishi Montero - service repair manual 2004 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  264  265  266  267   ..

 

 

Mitsubishi Montero (2004+). Manual - part 266

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-551

DESCRIPTIONS OF MONITOR METHODS
Off-surge does not occur after solenoid is operated 

on to off.

.

MONITOR EXECUTION
Once per driving cycle

.

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

.

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. 

MONITORING

CONDITIONS

NO

NO

YES

YES

GOOD

MALFUNCTION

WAS SURGE VOLTAGE

(> VB+2V) DETECTED?

START

END

AK302954

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-552

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-4

.

.

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. 

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.

STEP 2. Check connector G-27 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.

AK302970

AB

MB991911

MB991824

MB991827

AK200969

1

2

G-27(B)

AB

CONNECTOR: G-27

HARNESS 
CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-553

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

connector G-27.

(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 [at 20

°

(68

°F)]?

YES : Go to Step 4.
NO :  Replace it. Then go to Step 12.

STEP 4. Measure the power supply voltage at evaporative 
emission ventilation solenoid harness side connector 
G-27.
(1) Disconnect the connector G-27 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.

AK200969

1

2

G-27(B)

AB

CONNECTOR: G-27

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK000004

2

1

EVAPORATIVE EMISSION
VENTILATION SOLENOID

AB

AK200969

1

2

G-27(B)

AB

CONNECTOR: G-27

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AKX01502

G-27 HARNESS 
CONNECTOR: 
COMPONENT SIDE

1

AW

2

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-554

STEP 5. Check connector B-22X at MFI relay for damage.
Q: Is the connector in good condition?

YES : Check connectors D-116, E-111, D-112 and F-10 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 B-22X (terminal No. 1) 
and evaporative emission ventilation solenoid 
connector G-27 (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.

STEP 6. Measure the power supply voltage at PCM 
connector D-132 by backprobing.
(1) Do not disconnect the connector D-132.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 11 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.

AK200951

2 1

3

4

B-22X

AB

CONNECTOR: B-22X

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK200938

2

3

4

5

6

7

8

9

1

10

14

15

16

17

18

19

20

21

22

23

24

25

26

27

11

12

13

AB

CONNECTOR: D-132

HARNESS CONNECTOR: 
COMPONENT SIDE

PCM

D-132(GR)

AK201422

1

2

3

5

6 7 8 9

4

20

21 22

232425

2627

10111213

14 15

16 1718

19

AB

D-132 HARNESS 
CONNECTOR: 
HARNESS SIDE

 

 

 

 

 

 

 

Content   ..  264  265  266  267   ..