Mitsubishi Outlander GS45X. Manual — part 660

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-463

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

AK604513

3

2

1

4

2

3

114

113

112

5 V

AC

D-19

(MU802723)

C-129

B-11

FUEL TANK DIFFERENTIAL
PRESSURE SENSOR

FUEL TANK DIFFERENTIAL PRESSURE SENSOR CIRCUIT

ENGINE CONTROL
MODULE

YELLO

W

-BLA

CK

YELLO

W

-BLA

CK

BR

O

W

N

BR

O

W

N

RED-GREEN

RED-GREEN

AK704097AB

Connector: B-11

B-11 (GR)

AK900595

Connector: C-129

C-129

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-464

.

CIRCUIT OPERATION

• The ECM (terminal No. 114) supplies a 5 volts

reference 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

• Fuel tank differential pressure sensor output volt-

age is out of specified range.

.

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

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-465

DTC SET CONDITIONS

Logic Flow Chart (Monitor Sequence)

.

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 Criterion

• The fuel tank differential pressure sensor output

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

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 23

P.13A-11

.

.

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

• Fuel tank differential pressure sensor failed.

• Open fuel tank differential pressure sensor cir-

cuit, or connector damage.

• ECM failed.

AK604526

No

Continuous

failure for 5 secs

Start

End

No

No

Yes

Yes

Malfunction

Good

Output voltage

< 0.2V

Output voltage

> 4.8V

AB

Yes

No

Yes

Monitoring

conditions

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-466

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A