2007 INFINITI FX35 Service Manual

fuse box diagram check transmission fluid overheating coolant temperature mileage relay

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Page 2369 of 4366

INFINITI FX35 2007 Service Manual DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION EC-993
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EC
Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS0046A
1. CHECK EXHAUST GAS LEAK
1. St

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INFINITI FX35 2007 Service Manual EC-994
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DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION
Revision: 2006 July 2007 FX35/FX45
3. CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconn

Page 2371 of 4366

INFINITI FX35 2007 Service Manual DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION EC-995
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Revision: 2006 July 2007 FX35/FX45
4. CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Ref

Page 2372 of 4366

INFINITI FX35 2007 Service Manual EC-996
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DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION
Revision: 2006 July 2007 FX35/FX45
8. CHECK FUNCTION OF FUEL INJECTOR-I
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconne

Page 2373 of 4366

INFINITI FX35 2007 Service Manual DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION EC-997
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Revision: 2006 July 2007 FX35/FX45
9. CHECK FUNCTION OF FUEL INJECTOR-II
Provide battery voltag

Page 2374 of 4366

INFINITI FX35 2007 Service Manual EC-998
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DTC P0181 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
DTC P0181 FTT SENSORPFP:22630
Component DescriptionNBS0046B
The fuel tank temperature sensor is used to detect the fuel tempera-

EC-998
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DTC P0181 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
DTC P0181 FTT SENSORPFP:22630
Component DescriptionNBS0046B
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 thermistor 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 terminals, such as the ground.
On Board Diagnosis LogicNBS0046C
DTC Confirmation ProcedureNBS0046D
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 10 seconds. If the result is NG, go to EC-1001, "
Diagnostic Procedure" .
If the result is OK, go to following step.
4. 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.
5. Cool engine down until “COOLAN TEMP/S” is less than 60 °C
(140 °F).
6. Wait at least 10 seconds.
7. If 1st trip DTC is detected, go to EC-1001, "
Diagnostic Procedure" .
PBIB1507E
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
P0181
0181 Fuel tank temperature
sensor circuit range/
performance Rationally incorrect voltage from the sensor is
sent to ECM, compared with the voltage sig-
nals from engine coolant temperature sensor
and intake air temperature sensor.
Harness or connectors
(The sensor circuit is open or shorted)
Fuel tank temperature sensor
SEF174Y

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INFINITI FX35 2007 Service Manual DTC P0181 FTT SENSOR EC-999
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Revision: 2006 July 2007 FX35/FX45
WITH GST
Follow the procedure “WITH CONSULT-II” above.

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INFINITI FX35 2007 Service Manual EC-1000
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DTC P0181 FTT SENSOR
Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS0046E
TBWM1334E

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