2009 NISSAN LATIO Service Repair Manual

brake sensor fog light bulb coolant gearbox fuel fuel reserve

Page 2625 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0172 FUEL INJECT
ION SYSTEM FUNCTION
EC-1269
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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OK or NG OK >> GO TO 7.
NG >> Check connectors for rusted terminals or loose c onne

Page 2626 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1270< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0181 FTT SENSOR
DTC P0181 FTT SENSOR
Component Description INFOID:0000000004500118
The fuel tank temperature sensor (4) is used to detect the fuel tem-

EC-1270< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0181 FTT SENSOR
DTC P0181 FTT SENSOR
Component Description INFOID:0000000004500118
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 Logic INFOID:0000000004500119
DTC Confirmation Procedure INFOID:0000000004500120
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, 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-1271, " Diagnosis Procedure " .
If 1st trip DTC is not det ected, 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-1271, " Diagnosis Procedure " .
WITH GST BBIA0704E
Fluid temperature
°C ( °F) Voltage*
V Resistance
kΩ
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/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

Page 2627 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0181 FTT SENSOR
EC-1271
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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M A EC
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Follow the procedure “WITH CONSULT-III” above.
Wiring Diagram INFOID:0000000004500121
Diagnosis Proc

Page 2628 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1272< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0181 FTT SENSOR
2. Loosen and retighten ground screw on the body. Refer to EC-1144, " Ground Inspection " .
OK or NG OK >> GO TO 2.
NG >> Repair or repl

Page 2629 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0181 FTT SENSOR
EC-1273
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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M A EC
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2. Disconnect combination meter harness connector.
3. Check harness continuity between “fuel leve

Page 2630 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1274< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0182, P0183 FTT SENSOR
DTC P0182, P0183 FTT SENSOR
Component Description INFOID:0000000004501179
The fuel tank temperature sensor (4) is used to detect

Page 2631 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0182, P0183 FTT SENSOR
EC-1275
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
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M A EC
NP
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Wiring Diagram
INFOID:0000000004501180
Diagnosis Procedure INFOID:00000000045011811.
CHECK GROUND

Page 2632 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-1276< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0182, P0183 FTT SENSOR
OK or NG OK >> GO TO 2.
NG >> Repair or replace ground connections. 2.
CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.

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