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DTC P0181 FTT SENSOR EC-329
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Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS003PF
TBWM1386E
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EC-330
[VQ35DE]
DTC P0181 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS003PG
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-153, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-31, "
SELF-DIAG RESULTS" .
OK or NG
OK >> GO TO 3.
NG >> Go to DI-21, "
Fuel Level Sensor Signal Inspection" .
3. CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor unit and fuel pump” harness con- nector.
3. Turn ignition switch ON.
4. Check voltage between “fuel level sensor unit and fuel pump” terminal 4 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
PBIB2625E
PBIB1572E
Voltage: Approximately 5V
PBIB0932E
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![INFINITI FX35 2007 Service Manual DTC P0181 FTT SENSOR EC-331
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Revision: 2006 July 2007 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness INFINITI FX35 2007 Service Manual DTC P0181 FTT SENSOR EC-331
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Revision: 2006 July 2007 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness](/manual-img/42/57018/w960_57018-1706.png)
DTC P0181 FTT SENSOR EC-331
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Revision: 2006 July 2007 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness for open or short between ECM and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connector.
5. CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect “unified meter and A/C amp.” harness connector.
3. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and “unified meter and A/C amp.” terminal 36. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness for open or short between “fuel level sensor unit and fuel pump” and “unified meter and A/C
amp.”
>> Repair open circuit or short to ground or short to power in harness or connector.
7. CHECK FUEL TANK TEMPERATURE SENSOR
Refer to EC-332, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace fuel level sensor unit.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-147, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.
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EC-332
[VQ35DE]
DTC P0181 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
Component InspectionNBS003PH
FUEL TANK TEMPERATURE SENSOR
1. Remove fuel level sensor unit.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 4 and 5 by heating with hot water as shown in the fig-
ure.
If NG, replace fuel level sensor unit.
Removal and InstallationNBS003PI
FUEL TANK TEMPERATURE SENSOR
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
Temperature °C ( °F) Resistance k Ω
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
PBIB0931E
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![INFINITI FX35 2007 Service Manual DTC P0182, P0183 FTT SENSOR EC-333
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Revision: 2006 July 2007 FX35/FX45
DTC P0182, P0183 FTT SENSORPFP:22630
Component DescriptionNBS003PJ
The fuel tank INFINITI FX35 2007 Service Manual DTC P0182, P0183 FTT SENSOR EC-333
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DTC P0182, P0183 FTT SENSORPFP:22630
Component DescriptionNBS003PJ
The fuel tank](/manual-img/42/57018/w960_57018-1708.png)
DTC P0182, P0183 FTT SENSOR EC-333
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Revision: 2006 July 2007 FX35/FX45
DTC P0182, P0183 FTT SENSORPFP:22630
Component DescriptionNBS003PJ
The fuel tank temperature (FTT) sensor is used to detect the fuel
temperature inside the fuel tank. The sensor modifies a voltage sig-
nal from the ECM. The modified signal returns to the ECM as the
fuel temperature input. The sensor uses a thermistor which is sensi-
tive to the change in temperature. The electrical resistance of the
thermistor decreases as temperature increases.
*: This data is reference values and is 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 terminals, such as the ground.
On Board Diagnosis LogicNBS003PK
DTC Confirmation ProcedureNBS003PL
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-335, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB1572E
Fluid temperature
° C ( °F) Voltage*
V Resistance
k Ω
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
P0182
0182 Fuel tank temperature
sensor circuit low input An excessively low voltage from the sensor is
sent to ECM.
Harness or connectors
(Fuel tank temperature sensor circuit is
open or shorted.)
Fuel tank temperature sensor
Unified meter and A/C amp.
P0183
0183 Fuel tank temperature
sensor circuit high input An excessively high voltage from the sensor is
sent to ECM.
SEF174Y
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EC-334
[VQ35DE]
DTC P0182, P0183 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS003PM
TBWM1386E
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DTC P0182, P0183 FTT SENSOR EC-335
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Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS003PN
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-153, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-31, "
SELF-DIAG RESULTS" .
OK or NG
OK >> GO TO 3.
NG >> Go to DI-21, "
Fuel Level Sensor Signal Inspection" .
3. CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor unit and fuel pump” harness con- nector.
3. Turn ignition switch ON.
4. Check voltage between “fuel level sensor unit and fuel pump” terminal 4 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
PBIB2625E
PBIB1572E
Voltage: Approximately 5V
PBIB0932E
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![INFINITI FX35 2007 Service Manual EC-336
[VQ35DE]
DTC P0182, P0183 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness for open or short between ECM an INFINITI FX35 2007 Service Manual EC-336
[VQ35DE]
DTC P0182, P0183 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness for open or short between ECM an](/manual-img/42/57018/w960_57018-1711.png)
EC-336
[VQ35DE]
DTC P0182, P0183 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness for open or short between ECM and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connector.
5. CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect “unified meter and A/C amp.” harness connector.
3. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and “unified meter and A/C amp.” terminal 36. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B1, M11
Harness for open or short between “fuel level sensor unit and fuel pump” and “unified meter and A/C
amp.”
>> Repair open circuit or short to ground or short to power in harness or connector.
7. CHECK FUEL TANK TEMPERATURE SENSOR
Refer to EC-337, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace fuel level sensor unit.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-147, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.