Mitsubishi Outlander GS45X. Manual — part 655
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-443
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-444
.
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 signal voltage.
• The ECM determines whether the fuel tank differ-
ential pressure sensor signal voltage is within
normal operating parameters.
.
DESCRIPTIONS OF MONITOR METHODS
• Detect malfunction if change of fuel tank differen-
tial pressure sensor output voltage during idling
stays large during specified go/stop operations.
.
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-445
DTC SET CONDITIONS
Logic Flow Chart (Monitor Sequence)
.
Check Conditions
• Accelerator pedal is not depressed.
• Vehicle speed is 1.5 km/h (1 mph) or less.
NOTE: The conditions for deviating from idling oper-
ation are as follows:
.
•
Vehicle speed is 50 km/h (31 mph) or more.
Judgement Criteria
• The drastic pressure fluctuation is detected 20
times or more per engine idling, which is that the
fuel tank differential pressure sensor output volt-
age is 0.2 V or more.
AK705072
Start
Off-idling condition
Idling condition?
F1 = 0
Off-idling condition
Yes
No
End
No
Malfunction
F1 > 20
FTPS output voltage
fluctuation > 0.2V
No
Yes
Yes
F1 = F1 + 1
Good
No
Yes
Yes
No
Yes
No
Specified times
monitored
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-446
• The condition described above is consecutively
detected 4 times under the normal driving condi-
tions
NOTE: If the number of sudden pressure fluctuations
does not reach twenty during any one period of
engine idling, or if the ignition switch is turned OFF,
the counter will reset to zero.
.
OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-ll Drive Cycle −
.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CODE TO BE
SET ARE:)
• Fuel tank differential pressure sensor failed.
• Fuel tank differential pressure sensor circuit har-
ness damage, or connector damage.
• ECM failed.
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
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