2011 NISSAN LATIO Service Repair Manual

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Page 1977 of 3787

NISSAN LATIO 2011 Service Repair Manual DTC P0116 ECT SENSOREC-683
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DTC P0116 ECT SENSOR
Component DescriptionINFOID:0000000006341821
The engine coolant temperature sensor is u

DTC P0116 ECT SENSOREC-683
< SERVICE INFORMATION > [MR18DE]
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DTC P0116 ECT SENSOR
Component DescriptionINFOID:0000000006341821
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor
modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine coolant
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.

*: This data is reference value and is measured between ECM terminal 38 (Engine
coolant temperature sensor) and ground.
CAUTION:
Do not use ECM ground terminals wh en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
On Board Diagnosis LogicINFOID:0000000006341822
NOTE:
If DTC P0116 is displayed with P0117 or P0118, first perform the trouble diagnosis for DTC P0117,
P0118. Refer to EC-687, "
DTC Confirmation Procedure".
DTC Confirmation ProcedureINFOID:0000000006341823
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.
TESTING CONDITION:
Before performing the following procedure, do not add fuel.
1. Start engine and warm it up to normal operating temperature.
2. Rev engine up to 2,000 rpm for more than10 minutes.
3. Move the vehicle to a cool place, then stop engine and turn ignition switch OFF.
4. Check resistance between “fuel level s ensor unit and fuel pump” terminals 4 and 5.
5. Soak the vehicle until the resistance between “fuel level sensor unit and fuel pump” terminals 4 and 5
becomes 0.5 kΩ higher than the value measured before soaking.
CAUTION:
Never turn ignition switch ON during soaking time.
SEF594K
Engine coolant temperature
[° C ( °F)] Voltage* (V)
Resistance (kΩ)
–10 (14) 4.47.0 - 11.4
20 (68) 3.52.1 - 2.9
50 (122) 2.20.68 - 1.00
90 (194) 0.90.236 - 0.260
SEF012P
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P0116
0116 Engine coolant tempera-
ture sensor circuit range/
performance Engine coolant temperature signal from engine
coolant temperature sensor does not fluctuate,
even when some time has passed after starting
the engine with pre-warming up condition. • Harness or connectors
(High or low resistance in the circuit)
• Engine coolant temperature sensor
Revision: May 2010 2011 Versa

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NISSAN LATIO 2011 Service Repair Manual EC-684
< SERVICE INFORMATION >[MR18DE]
DTC P0116 ECT SENSOR
NOTE:
Soak time changes depending on ambient ai
r temperature. It may take several hours.
6. Start engine and let it idle for 20 minutes.
7.

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NISSAN LATIO 2011 Service Repair Manual DTC P0116 ECT SENSOREC-685
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<Reference data>
2. If NG, replace engine coolant temperature sensor.
Removal and InstallationINFOID:0000000

Page 1980 of 3787

NISSAN LATIO 2011 Service Repair Manual EC-686
< SERVICE INFORMATION >[MR18DE]
DTC P0117, P0118 ECT SENSOR
DTC P0117, P0118 ECT SENSOR
Component DescriptionINFOID:0000000006341827
The engine coolant temperature sensor is used to detect the

Page 1981 of 3787

NISSAN LATIO 2011 Service Repair Manual DTC P0117, P0118 ECT SENSOREC-687
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DTC Confirmation ProcedureINFOID:0000000006341829
NOTE:
If DTC Confirmation Procedure has been previo

Page 1982 of 3787

NISSAN LATIO 2011 Service Repair Manual EC-688
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DTC P0117, P0118 ECT SENSOR
Wiring Diagram
INFOID:0000000006341830
Diagnosis ProcedureINFOID:0000000006341831
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch

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NISSAN LATIO 2011 Service Repair Manual DTC P0117, P0118 ECT SENSOREC-689
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OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK ECT SENSOR POWER SUPPLY C

Page 1984 of 3787

NISSAN LATIO 2011 Service Repair Manual EC-690
< SERVICE INFORMATION >[MR18DE]
DTC P0117, P0118 ECT SENSOR
Refer to
EC-684, "Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace engine coolant temperature sensor.
5.CHECK INTERMITTE

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