2008 INFINITI FX35 Service Manual

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Page 2121 of 3924

INFINITI FX35 2008 Service Manual
DTC P0181 FTT SENSOREC-881
< SERVICE INFORMATION > [VK45DE]
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DTC P0181 FTT SENSOR
Component DescriptionINFOID:0000000001326706
The fuel tank temperature sensor
is used

DTC P0181 FTT SENSOREC-881
< SERVICE INFORMATION > [VK45DE]
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DTC P0181 FTT SENSOR
Component DescriptionINFOID:0000000001326706
The fuel tank temperature sensor
is used to detect the fuel tempera-
ture inside the fuel tank. The sensor modifies a voltage signal from
the ECM. The modified signal returns to the ECM as the fuel temper-
ature input. The sensor uses a ther mistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.

*: These data are reference values and are measured between ECM terminal 107
(Fuel tank temperature sensor) and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output
voltage. Doing so may result in damage to the ECM's transistor.
Use a ground other than ECM te rminals, such as the ground.
On Board Diagnosis LogicINFOID:0000000001326707
DTC Confirmation ProcedureINFOID:0000000001326708
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-III
1. Turn ignition switch ON and wait at least 10 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-883, "
Diagnosis Procedure".
If 1st trip DTC is not detected, go to following step.
4. Select “COOLAN TEMP/S” in “DAT A MONITOR” mode with CONSULT-III.
5. Check “COOLAN TEMP/S” value. If “COOLAN TEMP/S” is less than 60 °C (140 °F), the result will be OK.
If “COOLAN TEMP/S” is above 60 °C (140 °F), go to the following step.
6. Cool engine down until “COOLAN TEMP/S” is less than 60 °C (140 °F).
7. Wait at least 10 seconds.
8. Check 1st trip DTC.
PBIB1507E
Fluid temperature °C ( °F) Voltage*
V Resistance
kΩ
20 (68) 3.5 2.3 - 2.7
50 (122) 2.2 0.79 - 0.90
SEF012P
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0181
0181 Fuel tank temperature
sensor circuit range/per-
formance Rationally incorrect voltage from the sensor is
sent to ECM, compared with the voltage signals
from engine coolant temperature sensor and in-
take air temperature sensor.
Harness or connectors
(The sensor circuit is open or shorted)
Fuel tank temperature sensor
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 2122 of 3924

INFINITI FX35 2008 Service Manual
EC-882
< SERVICE INFORMATION >[VK45DE]
DTC P0181 FTT SENSOR
9. If 1st trip DTC is detected, go to
EC-883, "Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Wiring D

Page 2123 of 3924

INFINITI FX35 2008 Service Manual
DTC P0181 FTT SENSOREC-883
< SERVICE INFORMATION > [VK45DE]
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Diagnosis ProcedureINFOID:0000000001326710
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loose

Page 2124 of 3924

INFINITI FX35 2008 Service Manual
EC-884
< SERVICE INFORMATION >[VK45DE]
DTC P0181 FTT SENSOR
>> Repair open circuit or short to ground or short to power in harness or connector.
5.CHECK FUEL TANK TEMPERATURE SENSOR
GROUND CIRCUIT F

Page 2125 of 3924

INFINITI FX35 2008 Service Manual
DTC P0182, P0183 FTT SENSOREC-885
< SERVICE INFORMATION > [VK45DE]
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DTC P0182, P0183 FTT SENSOR
Component DescriptionINFOID:0000000001326713
The fuel tank temperature s

Page 2126 of 3924

INFINITI FX35 2008 Service Manual
EC-886
< SERVICE INFORMATION >[VK45DE]
DTC P0182, P0183 FTT SENSOR
Wiring Diagram
INFOID:0000000001326716
Diagnosis ProcedureINFOID:0000000001326717
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch

Page 2127 of 3924

INFINITI FX35 2008 Service Manual
DTC P0182, P0183 FTT SENSOREC-887
< SERVICE INFORMATION > [VK45DE]
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Refer to
EC-723, "Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connec

Page 2128 of 3924

INFINITI FX35 2008 Service Manual
EC-888
< SERVICE INFORMATION >[VK45DE]
DTC P0182, P0183 FTT SENSOR
3. Check harness continuity between “fuel level sensor
unit and fuel pump” terminal 5 and “unified meter and
A/C amp.” term

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