Mitsubishi Outlander GS45X. Manual - part 898

 

  Index      Mitsubishi     Mitsubishi Outlander GS45X - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  896  897  898  899   ..

 

 

Mitsubishi Outlander GS45X. Manual - part 898

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-525

STEP 8. Perform the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− OBD-II Drive Cycle − Pattern 22 

P.13B-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0452 set?

YES : Repeat the troubleshooting.
NO :  The procedure is complete.

DTC P0453: Evaporative Emission Control System Pressure Sensor High Input

AK901211

AB

I

A

C

E

D

F

G

H

Air filter

B

System diagram

Intake manifold

Evaporative emission
purge solenoid

Fuel tank

Evaporative
emission canister

Fuel tank differential
pressure sensor

Vent pipe

Evaporative emission
ventilation solenoid

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-526

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

2

8

7

6

5

4

3

11

21

20

19

18

17

16

15

14

13

12

9

22

1

10

3

2

1

AK704184

3

2

1

4

2

3

114

113

112

5 V

AB

D-19

(MU802723)

C-129

B-11

ENGINE 
CONTROL 
MODULE

FUEL TANK DIFFERENTIAL PRESSURE SENSOR CIRCUIT

FUEL TANK DIFFERENTIAL 
PRESSURE SENSOR

YELLO

W

-BLA

CK

YELLO

W

-BLA

CK

BR

O

W

N

B

R

O

WN

RED-GREEN

RED-GREEN

AK704190

ECM

B-11 (GR)

Connector: B-11

AB

AK900595

Connector: C-129

C-129

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-527

.

CIRCUIT OPERATION

• The ECM (terminal No. 114) supplies a 5-volt ref-

erence voltage to the fuel tank differential pres-
sure sensor (terminal No. 3). The ECM (terminal 
No. 113) supplies a ground to the fuel tank differ-
ential pressure sensor (terminal No. 2).

• The ECM (terminal No. 112) receives a voltage 

signal proportional to the pressure in the fuel tank 
from the fuel tank differential pressure sensor 
(terminal No. 1).

.

TECHNICAL DESCRIPTION

• To determine whether the fuel tank differential 

pressure sensor is defective, the ECM monitors 
the fuel tank differential pressure sensor output 
voltage.

• The ECM judges if the fuel tank differential pres-

sure sensor output voltage is normal.

NOTE: In rare cases, this DTC may be also set 
under some fuel and driving conditions regardless of 
the fuel pressure sensor output voltage when the fuel 
system is clogged.

.

DESCRIPTIONS OF MONITOR METHODS

• Compare purge solenoid status with fuel tank dif-

ferential pressure sensor output voltage.

.

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)

• Evaporative emission purge solenoid monitor

• Evaporative emission ventilation solenoid monitor

• Fuel temperature sensor monitor

• Fuel level sensor monitor

Sensor (The sensors below are determined to be 

normal)

• Mass airflow sensor

• Barometric pressure sensor

• Intake air temperature sensor

• Engine coolant temperature sensor

• Accelerator pedal position sensor

.

AK704189

Fuel tank differential
pressure sensor

D-19

Connector: D-19

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-528

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions

• 2 seconds or more have passed since the start-

ing sequence was completed.

• Remaining fuel level is 80 percent or less when 

the engine is started.

Judgement Criteria

• The fuel tank differential pressure sensor output 

voltage remains 4.8 volts or greater for 5 sec-
onds.

.

OBD-ll DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Pattern 22 

P.13B-11

.

.

TROUBLESHOOTING HINTS (THE MOST 
LIKELY CAUSES FOR THIS CODE TO BE 
SET ARE:)

• Connector damage.

• Harness damage.

• Fuel tank differential pressure sensor failed.

• ECM failed.

.

OVERVIEW OF TROUBLESHOOTING

• DTC P0453 can be set by a faulty fuel tank differ-

ential pressure sensor or related circuit, or ECM 
failure.

AK704187

No

End

No 

No

Malfunction

Good

No

Start

Monitoring
conditions

Output voltage

< 0.2v

Output voltage

> 4.8v

Yes

Yes

Yes

Yes

Continuous

failure for 5 secs

 

 

 

 

 

 

 

Content   ..  896  897  898  899   ..