2008 NISSAN LATIO Service Repair Manual

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Page 1457 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0456 EVAP CONTROL SYSTEM
EC-383
< SERVICE INFORMATION >
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Check vacuum hoses for clogging or disconnection. Refer to EC-99, "Vacuum Hose Drawing".
OK or NG
O

Page 1458 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-384
< SERVICE INFORMATION >
DTC P0456 EVAP CONTROL SYSTEM
OK or NG
OK >> GO TO 24.
NG >> Replace fuel level sensor unit.
24.CHECK INTERMITTENT INCIDENT
Refer to EC-136
.
>>INSPECTION END

Page 1459 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0460 FUEL LEVEL SENSOR
EC-385
< SERVICE INFORMATION >
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DTC P0460 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001702885
The fuel level sensor (3) is mounted

DTC P0460 FUEL LEVEL SENSOR
EC-385
< SERVICE INFORMATION >
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DTC P0460 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001702885
The fuel level sensor (3) is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the combination meter. The combination meter sends the fuel level
sensor signal to the ECM through CAN communication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
• Fuel level sensor unit and fuel pump (1)
• Fuel pressure regulator (2)
• Fuel tank temperature sensor (4)
On Board Diagnosis LogicINFOID:0000000001702886
NOTE:
•If DTC P0460 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-143
.
•If DTC P0460 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer
to EC-145
.
• When the vehicle is parked, naturally the fuel level in the fuel tank is stable. It means that output signal of the
fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunc-
tion is detected.
DTC Confirmation ProcedureINFOID:0000000001702887
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. Start engine and wait maximum of 2 consecutive minutes.
4. If 1st trip DTC is detected, go to EC-386, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-II” above.
BBIA0704E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0460
0460Fuel level sensor circuit
noiseEven though the vehicle is parked, a signal be-
ing varied is sent from the fuel level sensor to
ECM.• Harness or connectors
(CAN communication line is open or
shorted)
• Harness or connectors
(Fuel level sensor circuit is open or short-
ed)
• Combination meter
• Fuel level sensor
SEF195Y

Page 1460 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-386
< SERVICE INFORMATION >
DTC P0460 FUEL LEVEL SENSOR
Diagnosis Procedure
INFOID:0000000001702888
1.CHECK FUEL GAUGE OPERATION
Refer to DI-11, "
Self-Diagnosis Mode of Combination Meter".

Page 1461 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0461 FUEL LEVEL SENSOR
EC-387
< SERVICE INFORMATION >
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DTC P0461 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001702890
The fuel level sensor (3) is mounted

DTC P0461 FUEL LEVEL SENSOR
EC-387
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DTC P0461 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001702890
The fuel level sensor (3) is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the combination meter. The combination meter sends the fuel level
sensor signal to the ECM through CAN communication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
• Fuel level sensor unit and fuel pump (1)
• Fuel pressure regulator (2)
• Fuel tank temperature sensor (4)
On Board Diagnosis LogicINFOID:0000000001702891
NOTE:
•If DTC P0461 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-143
.
•If DTC P0461 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer
to EC-145
.
• This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has
been driven.Driving long distances naturally affect fuel gauge level.
Overall Function CheckINFOID:0000000001702892
Use this procedure to check the overall function of the fuel level sensor function. During this check, a 1st trip
DTC might not be confirmed.
WARNING:
When performing following procedure, be sure to observe the handling of the fuel.
Refer to FL-9
.
TESTING CONDITION:
Before starting overall function check, preparation of draining fuel and refilling fuel is required.
WITH CONSULT-II
NOTE:
Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/
8 Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line, refer to EC-78, "
Fuel Pressure Check".
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
BBIA0704E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0461
0461Fuel level sensor circuit
range/performanceThe output signal of the fuel level sensor does
not change within the specified range even
though the vehicle has been driven a long dis-
tance.• Harness or connectors
(CAN communication line is open or
shorted)
• Harness or connectors
(Fuel level sensor circuit is open or short-
ed)
• Combination meter
• Fuel level sensor

Page 1462 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-388
< SERVICE INFORMATION >
DTC P0461 FUEL LEVEL SENSOR
5. Turn ignition switch OFF and wait at least 10 seconds then turn
ON.
6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode with CON-
SUL

EC-388
< SERVICE INFORMATION >
DTC P0461 FUEL LEVEL SENSOR
5. Turn ignition switch OFF and wait at least 10 seconds then turn
ON.
6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode with CON-
SULT-II.
7. Check “FUEL LEVEL SE” output voltage and note it.
8. Select “FUEL PUMP RELAY” in “ACTIVE TEST” mode with
CONSULT-II.
9. Touch “ON” and drain fuel approximately 30 (7-7/8 US gal, 6-
5/8 Imp gal) and stop it.
10. Check “FUEL LEVEL SE” output voltage and note it.
11. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
12. Check “FUEL LEVEL SE” output voltage and note it.
13. Confirm whether the voltage changes more than 0.03V during step 7 to 10 and 10 to 12.
If NG, go to EC-388, "
Diagnosis Procedure".
WITH GST
NOTE:
Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8
Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line, refer to EC-78, "
Fuel Pressure Check".
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch ON.
6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
7. Confirm that the fuel gauge indication varies.
8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
9. Confirm that the fuel gauge indication varies.
10. If NG, go to EC-388, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001702893
1.CHECK FUEL GAUGE OPERATION
Refer to DI-11, "
Self-Diagnosis Mode of Combination Meter".
OK or NG
OK >> GO TO 2.
NG >> Follow the instruction of DI-11, "
Self-Diagnosis Mode of Combination Meter".
2.CHECK FUEL LEVEL SENSOR AND CIRCUIT
Refer to DI-17, "
Fuel Level Sensor Signal Inspection".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace malfunctioning parts.
3.CHECK INTERMITTENT INCIDENT
Refer to EC-136
.
>>INSPECTION END
Removal and InstallationINFOID:0000000001702894
FUEL LEVEL SENSOR
Refer to FL-5.
SEF195Y

Page 1463 of 2771

NISSAN LATIO 2008 Service Repair Manual DTC P0462, P0463 FUEL LEVEL SENSOR
EC-389
< SERVICE INFORMATION >
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DTC P0462, P0463 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001702895
The fuel level sensor

DTC P0462, P0463 FUEL LEVEL SENSOR
EC-389
< SERVICE INFORMATION >
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DTC P0462, P0463 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001702895
The fuel level sensor (3) is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the combination meter. The combination meter. sends the fuel level
sensor signal to the ECM through CAN communication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
• Fuel level sensor unit and fuel pump (1)
• Fuel pressure regulator (2)
• Fuel tank temperature sensor (4)
On Board Diagnosis LogicINFOID:0000000001702896
NOTE:
•If DTC P0462 or P0463 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for
DTC U1000, U1001. Refer to EC-143
.
•If DTC P0462 or P0463 is displayed with DTC U1010, first perform the trouble diagnosis for DTC
U1010. Refer to EC-145
.
• ECM receives two signals from the fuel level sensor circuit.One is fuel level sensor power supply circuit, and
the other is fuel level sensor ground circuit.This diagnosis indicates the former, to detect open or short circuit
malfunction.
DTC Confirmation ProcedureINFOID:0000000001702897
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, confirm that battery voltage is more than 11V at ignition
switch ON.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-390, "
Diagnosis Procedure".
WITH GST
BBIA0704E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0462
0462Fuel level sensor circuit
low inputAn excessively low voltage from the sensor is
sent to ECM.• Harness or connectors
(CAN communication line is open or
shorted)
• Harness or connectors
(Fuel level sensor circuit is open or short-
ed)
• Combination meter
• Fuel level sensor P0463
0463Fuel level sensor circuit
high inputAn excessively high voltage from the sensor is
sent to ECM.
SEF195Y

Page 1464 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-390
< SERVICE INFORMATION >
DTC P0462, P0463 FUEL LEVEL SENSOR
Follow the procedure “WITH CONSULT-II” above.
Diagnosis ProcedureINFOID:0000000001702898
1.CHECK FUEL GAUGE OPERATION
Refer to DI-

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