2006 INFINITI M35 Factory Service Manual

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Page 2609 of 5621

INFINITI M35 2006 Factory Service Manual EC-1066
[VK45DE]
DTC P0181 FTT SENSOR
Revision: 2006 January2006 M35/M45
DTC P0181 FTT SENSORPFP:22630
Component DescriptionNBS005FH
The fuel tank temperature sensor (3) is used to detect the fuel tem

EC-1066
[VK45DE]
DTC P0181 FTT SENSOR
Revision: 2006 January2006 M35/M45
DTC P0181 FTT SENSORPFP:22630
Component DescriptionNBS005FH
The fuel tank temperature sensor (3) is used to detect the fuel tem-
perature inside the fuel tank. The sensor modifies a voltage signal
from the ECM. The modified signal returns to the ECM as the fuel
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.
Fuel level sensor unit and fuel pump (1)
Fuel pressure regulator (2)

*: This data is reference value 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 LogicNBS005FI
DTC Confirmation ProcedureNBS005FJ
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-1069, "
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 (140F), the result will
be OK.
If “COOLAN TEMP/S” is above 60
C (140F), 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-1069, "
Diagnostic Procedure" .
PBIB2707E
Fluid temperature
C (F)Voltage*
VResistance
k
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
0181Fuel tank temperature
sensor circuit range/
performanceRationally 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

Page 2610 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0181 FTT SENSOR
EC-1067
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EC
Revision: 2006 January2006 M35/M45
WITH GST
Follow the procedure “WITH CONSULT-II” above.

Page 2611 of 5621

INFINITI M35 2006 Factory Service Manual EC-1068
[VK45DE]
DTC P0181 FTT SENSOR
Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005FK
TBWT1024E

Page 2612 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0181 FTT SENSOR
EC-1069
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Revision: 2006 January2006 M35/M45
Diagnostic ProcedureNBS005FL
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and r

Page 2613 of 5621

INFINITI M35 2006 Factory Service Manual EC-1070
[VK45DE]
DTC P0181 FTT SENSOR
Revision: 2006 January2006 M35/M45
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M13, B2
Harness connectors B63, B161
Harness for open or

Page 2614 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0181 FTT SENSOR
EC-1071
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Revision: 2006 January2006 M35/M45
Component InspectionNBS005FM
FUEL TANK TEMPERATURE SENSOR
1. Remove fuel level sensor unit.
2. Check

Page 2615 of 5621

INFINITI M35 2006 Factory Service Manual EC-1072
[VK45DE]
DTC P0182, P0183 FTT SENSOR
Revision: 2006 January2006 M35/M45
DTC P0182, P0183 FTT SENSORPFP:22630
Component DescriptionNBS005FO
The fuel tank temperature sensor (3) is used to detec

Page 2616 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0182, P0183 FTT SENSOR
EC-1073
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005FR
TBWT1024E

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