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Removal and Installation INFOID:0000000004537353
FUEL LEVEL SENSOR Refer to FL-5 .
Page 2218 of 4331
![NISSAN LATIO 2009 Service Repair Manual EC-862< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0461 FUEL LEVEL SENSOR
DTC P0461 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537354
The fuel level sensor (3) is mounted in the fuel level s NISSAN LATIO 2009 Service Repair Manual EC-862< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0461 FUEL LEVEL SENSOR
DTC P0461 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537354
The fuel level sensor (3) is mounted in the fuel level s](/manual-img/5/57359/w960_57359-2217.png)
EC-862< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0461 FUEL LEVEL SENSOR
DTC P0461 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537354
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 Diagn osis Logic INFOID:0000000004537355
NOTE:
• If DTC P0461 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-633 .
• If DTC P0461 is displayed with DT C U1010, first perform the trouble diagnosis for DTC U1010. Refer
to EC-635 .
• 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 Check INFOID:0000000004537356
Use this procedure to check the overall function of the f uel 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-4 .
TESTING CONDITION:
Before starting overall function check, preparation of draining fuel and refilling fuel is required.
WITH CONSULT-III
NOTE:
Start from step 10, if it is possibl e 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-574, " 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 OFF and wait at least 10 seconds then turn ON.
6. Select “FUEL LEVEL SE” in “DAT A MONITOR” mode with CONSULT-III.
7. Check “FUEL LEVEL SE” output voltage and note it.
8. Select “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-III.
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. BBIA0704E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0461
0461 Fuel level sensor circuit
range/performance The 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 2219 of 4331

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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-863, " 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-574, " 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-863, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004537357Self-Diagnosis Mode of Combination Meter " .
OK or NG OK >> GO TO 2.
NG >> Follow the instruction of DI-10, " Self-Diagnosis Mode of Combination Meter " .
Fuel Level Sensor Signal Inspection " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace malfunctioning parts. .
>> INSPECTION END
Removal and Installation INFOID:0000000004537358
FUEL LEVEL SENSOR Refer to FL-5 .
Page 2220 of 4331
![NISSAN LATIO 2009 Service Repair Manual EC-864< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0462, P0463
FUEL LEVEL SENSOR
DTC P0462, P0463 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537359
The fuel level sensor (3) is mounted in t NISSAN LATIO 2009 Service Repair Manual EC-864< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0462, P0463
FUEL LEVEL SENSOR
DTC P0462, P0463 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537359
The fuel level sensor (3) is mounted in t](/manual-img/5/57359/w960_57359-2219.png)
EC-864< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0462, P0463
FUEL LEVEL SENSOR
DTC P0462, P0463 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537359
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 Diagn osis Logic INFOID:0000000004537360
NOTE:
• If DTC P0462 or P0463 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for
DTC U1000, U1001. Refer to EC-633 .
• If DTC P0462 or P0463 is displayed with DTC U1010, first perform the trouble diagnosis for DTC
U1010. Refer to EC-635 .
DTC Confirmation Procedure INFOID:0000000004537361
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at ignition
switch ON.
1. Turn ignition switch ON and wait at least 5 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-864, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:00000000045373621.
CHECK FUEL GAUGE OPERATION
Refer to DI-10, " Self-Diagnosis Mode of Combination Meter " .
OK or NG OK >> GO TO 2.
NG >> Follow the instruction of DI-10, " Self-Diagnosis Mode of Combination Meter " .
2.
CHECK FUEL LEVEL SENSOR AND CIRCUIT
Refer to DI-16, " Fuel Level Sensor Signal Inspection " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace malfunctioning parts. BBIA0704E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0462
0462 Fuel level sensor circuit
low input An 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
0463 Fuel level sensor circuit
high input An excessively high voltage from the sensor is
sent to ECM.
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Removal and Installation INFOID:0000000004537363
FUEL LEVEL SENSOR Refer to FL-5 .
Page 2222 of 4331

.
• If DTC P0500 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-635 .
The vehicle speed signal is sent from “ABS actuator and electric unit (control unit)” or combination meter
through CAN communication line.
On Board Diagn osis Logic INFOID:0000000004537365
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode.
DTC Confirmation Procedure INFOID:0000000004537366
CAUTION:
Always drive vehicle at a safe speed.
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.
TESTING CONDITION:
Steps 1 and 2 may be conducted with the drive wheels li fted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-III
1. Start engine.
2. Read “VHCL SPEED SE” in “DATA MONITOR” m ode with CONSULT-III. The vehicle speed on CON-
SULT-III should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
If NG, go to EC-867, " Diagnosis Procedure " .
If OK, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Warm engine up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive seconds.
6. Check 1st trip DTC. DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0500
0500 Vehicle speed sensor The almost 0 km/h (0 MPH) signal from
vehicle speed sensor is sent to ECM even
when vehicle is being driven. • Harness or connectors
(CAN communication line is open or shorted.)
• Harness or connectors (Vehicle speed signal circuit is open or shorted)
• ABS actuator and electric unit (control unit)
• Combination meter Detected item Engine operating condition in fail-safe mode
Vehicle speed sensor When the fail-safe system for vehicle speed sensor is activated, the cooling fan operates
(High) while engine is running. ENG SPEED More th
an 1,600 rpm
COOLAN TEMP/S More than 70 °C (158 °F)
B/FUEL SCHDL 5.5 - 31.8 msec
Shift lever Suitable position
PW/ST SIGNAL OFF
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7. If 1st trip DTC is detected, go to
EC-867, " Diagnosis Procedure " .
Overall Function Check INFOID:0000000004537367
Use this procedure to check the overall function of the v ehicle speed signal circuit. During this check, a 1st trip
DTC might not be confirmed.
WITH GST
1. Lift up drive wheels.
2. Start engine.
3. Read vehicle speed signal in Service $01 with GST. The vehicle speed signal on GST should be able to ex ceed 10 km/h (6 MPH) when rotating wheels with
suitable gear position.
4. If NG, go to EC-867, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004537368.
OK or NG OK >> GO TO 2.
NG >> Repair or replace. .
>> INSPECTION END
Page 2224 of 4331

Idle Air Volume Learning " ,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to the EC-1012 .
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
• Always perform the test at a temperature above −10 °C (14 °F).
1. Open engine hood.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and run it for at least 1 minute at idle speed.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-868, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004537372OK >> GO TO 2.
NG >> Discover air leak location and repair. ECM Re-communicating Function " .
4. Perform EC-572, " VIN Registration " .
5. Perform EC-572, " Accelerator Pedal Released Position Learning " .
6. Perform EC-572, " Throttle Valve Closed Position Learning " .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0506
0506 Idle speed control sys-
tem RPM lower than ex-
pected The idle speed is less than the target idle speed
by 100 rpm or more. • Electric throttle control actuator
• Intake air leak