Mitsubishi Outlander GS45X. Manual — part 657
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-451
DTC P0452: Evaporative Emission Control System Pressure Sensor Low Input
AK901208
AB
K
A
B
C
E
G
F
H
I
J
Air filter
D
Chamber
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) <2.4L ENGINE>
13A-452
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
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-453
.
CIRCUIT OPERATION
• The ECM (terminal No. 114) supplies a 5 volts
reference signal to the fuel tank differential pres-
sure sensor (terminal No. 3). The fuel tank differ-
ential pressure sensor (terminal No. 2) is
grounded through the ECM (terminal No. 113).
• The fuel tank differential pressure sensor (termi-
nal No. 1) returns a voltage signal to the ECM
(terminal No. 112) that is proportional to the pres-
sure in the fuel tank.
.
TECHNICAL DESCRIPTION
• The ECM monitors the fuel tank differential pres-
sure sensor output voltage.
• The ECM determines whether the fuel tank differ-
ential pressure sensor signal voltage is within
normal operating parameters.
.
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
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-454
DTC SET CONDITIONS
Logic Flow Chart (Monitor Sequence)
.
Check Condition
• 2 seconds or more have passed since the start-
ing sequence was completed.
Judgement Criterion
• The fuel tank differential pressure sensor output
voltage remains 0.2 volt or less for 5 seconds.
.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-II Drive Cycle −
.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CODE TO BE
SET ARE:)
• Fuel tank differential pressure sensor failed.
• Open or shorted fuel tank differential pressure
sensor circuit, 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
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