2006 NISSAN VERSA Workshop Service Repair Manual

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Page 1457 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-288Revision: June 2006
DTC P0172 FUEL INJECTION SYSTEM FUNCTION
2007 Versa
Diagnostic ProcedureUBS00QGC
1. CHECK EXHAUST GAS LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust gas le

Page 1458 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0172 FUEL INJECTION SYSTEM FUNCTION
EC-289
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4. CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Refer to EC-81, "
FUEL PRESSURE RELEASE

Page 1459 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-290Revision: June 2006
DTC P0172 FUEL INJECTION SYSTEM FUNCTION
2007 Versa
7. CHECK FUNCTION OF FUEL INJECTORS
With CONSULT-II
1. Let engine idle.
2. Perform “POWER BALANCE” in “ACTIVE TEST�

Page 1460 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0181 FTT SENSOR
EC-291
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Revision: June 20062007 Versa
DTC P0181 FTT SENSORPFP:22630
Component DescriptionUBS00QGD
The fuel tank temperature sensor (4) is used to detect t

DTC P0181 FTT SENSOR
EC-291
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DTC P0181 FTT SENSORPFP:22630
Component DescriptionUBS00QGD
The fuel tank temperature sensor (4) 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)
Fuel level sensor (3)

*: This data is reference values and is measured between ECM terminal 43 (Fuel
tank temperature sensor) and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output
voltage. Doing so may result damage the ECM's transistor. Use
ground other than ECM, such as ground.
On Board Diagnosis LogicUBS00QGE
DTC Confirmation ProcedureUBS00QGF
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-294, "
Diagnostic Procedure" .
If the result is OK, go to following step.
4. Check “COOLAN TEMP/S” value.
If the “COOLANT TEMP/S” is less than 60°C (140°F), the result
will be OK.
If the “COOLANT TEMP/S” is above 60°C (140°F), go to the fol-
lowing step.
5. Cool engine down until “COOLAN TEMP/S” signal is less than
60°C (140°F).
6. Wait at least 10 seconds.
7. If 1st trip DTC is detected, go to EC-294, "
Diagnostic Procedure" .
BBIA0704E
Fluid temperature
°C (°F)Voltage*
VResistance
kΩ
20 (68) 3.5 2.3 - 2.7
50 (122) 2.2 0.79 - 0.90
SEF 0 12 P
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
(Fuel tank temperature sensor circuit is
open or shorted)
Fuel tank temperature sensor
SEF 1 74 Y

Page 1461 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-292Revision: June 2006
DTC P0181 FTT SENSOR
2007 Versa
WITH GST
Follow the procedure “WITH CONSULT-II” above.

Page 1462 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0181 FTT SENSOR
EC-293
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Revision: June 20062007 Versa
Wiring DiagramUBS00QGG
BBWA2636E

Page 1463 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-294Revision: June 2006
DTC P0181 FTT SENSOR
2007 Versa
Diagnostic ProcedureUBS00QGH
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body.
Refer

Page 1464 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P0181 FTT SENSOR
EC-295
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Revision: June 20062007 Versa
3. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E8, F8
Harness connectors M69, E7
Harness c

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