2010 NISSAN LATIO Service Repair Manual

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Page 2033 of 3745

NISSAN LATIO 2010 Service Repair Manual EC-768
< SERVICE INFORMATION >[MR18DE]
DTC P0172 FUEL INJECTION SYSTEM FUNCTION
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3.CHECK A

Page 2034 of 3745

NISSAN LATIO 2010 Service Repair Manual DTC P0172 FUEL INJECTION SYSTEM FUNCTION
EC-769
< SERVICE INFORMATION > [MR18DE]
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OOK or NG
OK >> GO TO 7.
NG >> Check connectors for rusted terminals or loose connections

Page 2035 of 3745

NISSAN LATIO 2010 Service Repair Manual EC-770
< SERVICE INFORMATION >[MR18DE]
DTC P0181 FTT SENSOR
DTC P0181 FTT SENSOR
Component DescriptionINFOID:0000000005532605
The fuel tank temperature sensor
(4) is used to detect the fuel tem-
pera

EC-770
< SERVICE INFORMATION >[MR18DE]
DTC P0181 FTT SENSOR
DTC P0181 FTT SENSOR
Component DescriptionINFOID:0000000005532605
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 elec trical 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 da mage the ECM's transistor. Use
ground other than ECM, such as ground.
On Board Diagn osis LogicINFOID:0000000005532606
DTC Confirmation ProcedureINFOID:0000000005532607
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-III
1. Turn ignition switch ON and wait at least 10 seconds.
2. Check 1st trip DTC.
If 1st trip DTC is detected, go to EC-771, "
Diagnosis Procedure".
If 1st trip DTC is not detected, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Check “COOLAN TEMP/S” value. If the “COOLAN TEMP/S” is less than 60 °C (140° F), the result will be OK.
If the “COOLAN TEMP/S” is above 60 °C (140° F), go to the following step.
5. Cool engine down until “COOLAN TEMP/S” signal is less than 60 °C (140° F).
6. Wait at least 10 seconds.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to EC-771, "
Diagnosis Procedure".
WITH GST
BBIA0704E
Fluid temperature
[° C ( °F)] Voltage* (V)
Resistance (kΩ)
20 (68) 3.52.3 - 2.7
50 (122) 2.20.79 - 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
(Fuel tank temperature sensor circuit is
open or shorted)
• Fuel tank temperature sensor
Revision: January 20102010 Versa

Page 2036 of 3745

NISSAN LATIO 2010 Service Repair Manual DTC P0181 FTT SENSOREC-771
< SERVICE INFORMATION > [MR18DE]
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Follow the procedure “WITH CONSULT-III” above.
Wiring DiagramINFOID:0000000005532608
Diagnosis Procedure

Page 2037 of 3745

NISSAN LATIO 2010 Service Repair Manual EC-772
< SERVICE INFORMATION >[MR18DE]
DTC P0181 FTT SENSOR
2. Loosen and retighten ground screw on the body.
Refer to EC-638, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace gro

Page 2038 of 3745

NISSAN LATIO 2010 Service Repair Manual DTC P0181 FTT SENSOREC-773
< SERVICE INFORMATION > [MR18DE]
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2. Disconnect combination meter harness connector.
3. Check harness continuity between “fuel level sensor

Page 2039 of 3745

NISSAN LATIO 2010 Service Repair Manual EC-774
< SERVICE INFORMATION >[MR18DE]
DTC P0182, P0183 FTT SENSOR
DTC P0182, P0183 FTT SENSOR
Component DescriptionINFOID:0000000005532612
The fuel tank temperature sensor
(4) is used to detect the

Page 2040 of 3745

NISSAN LATIO 2010 Service Repair Manual DTC P0182, P0183 FTT SENSOREC-775
< SERVICE INFORMATION > [MR18DE]
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Wiring DiagramINFOID:0000000005532615
Diagnosis ProcedureINFOID:0000000005532616
1.CHECK GROUND CONNE

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