fuel tank removal NISSAN LATIO 2008 Service Repair Manual

COMBINATION METERS
DI-17
< SERVICE INFORMATION >
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OK or NG
OK >> Check harness or connector between combination meter and vehicle speed sensor.
NG >> Replace vehicle speed sensor.
WITH CVT, WITHOUT ABS
1.CHECK COMBINATION METER INPUT SIGNAL
1. Start engine and select “METER/M&A” on CONSULT-III.
2. Using “SPEED METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with speedome-
ter pointer of combination meter.
OK or NG
OK >> Perform TCM self-diagnosis. Refer to CVT-47, "CONSULT-III Function (TRANSMISSION)" .
NG >> Replace combination meter. Refer to IP-11, "
Removal and Installation" .
Engine Speed Signal InspectionINFOID:0000000001704503
Symptom: Improper tachometer indication.
1.CHECK COMBINATION METER INPUT SIGNAL
1. Start engine and select “METER/M&A” on CONSULT-III.
2. Using “TACHO METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with tachometer
pointer of combination meter.
OK or NG
OK >> Perform ECM self-diagnosis. Refer to EC-109, "CONSULT-II Function (ENGINE)" .
NG >> Replace combination meter. Refer to IP-11, "
Removal and Installation" .
Fuel Level Sensor Signal InspectionINFOID:0000000001704504
Symptom:
• Improper fuel gauge indication.
• Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms do not indicate a malfunction.
• Depending on vehicle position or driving circumstance, the fuel level in the tank shifts and the indication may
fluctuate.
• If the vehicle is fueled with the ignition switch ON, the indication will update slowly.
• If the vehicle is tilted when the ignition switch is turned ON, fuel in the tank may flow to one direction result-
ing in a change of reading.
1.CHECK COMBINATION METER INPUT SIGNAL
1. Select “METER/M&A” on CONSULT-III.
2. Using “FUEL METER” on “DATA MONITOR”, compare the value of “DATA MONITOR” with fuel gauge
pointer of combination meter.
Te r m i n a l s
Resistance
value
(Approx.) (+) (–)
Component Terminal Component Terminal
Ve h i c l e
speed
sensor1Vehicle
speed
sensor2250Ω
Fuel gauge pointer Reference value of data monitor [lit.]
Full Approx. 49
3/4 Approx. 34
1/2 Approx. 22
1/4 Approx. 10
Empty Approx. 4

COMBINATION METERS
DI-19
< SERVICE INFORMATION >
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OK >> Check fuel level sensor unit installation, and check whether the float arm interferes or binds with
any of the internal components in the fuel tank. Repair or replace malfunctioning part, if neces-
sary.
NG >> Replace fuel level sensor unit.
Fuel Gauge Fluctuates, Indicates Wrong Value, or VariesINFOID:0000000001704505
1.CHECK FUEL GAUGE FLUCTUATION
Test drive vehicle to see if gauge fluctuates only during driving or at the instant of stopping.
Does the indication value vary only during driving or at the at the instant of stopping?
YES >> The pointer fluctuation may be caused by fuel level change in the fuel tank. Condition is normal.
NO >> Ask the customer about the situation when the symptom occurs in detail, and perform the trouble
diagnosis.
Fuel Gauge Does Not Move to Full-positionINFOID:0000000001704506
1.OBSERVE FUEL GAUGE
Does it take a long time for the pointer to move to FULL position?
YES or NO
YES >> GO TO 2.
NO >> GO TO 3.
2.IDENTIFY FUELING CONDITION
Was the vehicle fueled with the ignition switch ON?
YES or NO
YES >> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise, it will take a long time to move
to FULL position because of the characteristic of the fuel gauge.
NO >> GO TO 3.
3.OBSERVE VEHICLE POSITION
Is the vehicle parked on an incline?
YES or NO
YES >> Check the fuel level indication with vehicle on a level surface.
NO >> GO TO 4.
4.OBSERVE FUEL GAUGE POINTER
During driving, does the fuel gauge pointer move gradually toward EMPTY position?
YES or NO
YES >> Check the components. Refer to DI-19, "Electrical Component Inspection" .
NO >> The float arm may interfere or bind with any of the components in the fuel tank.
DTC [U1000] CAN Communication CircuitINFOID:0000000001704507
Symptom: Display CAN COMM CIRC [U1000] at the result of self-diagnosis for combination meter.
1.CHECK CAN COMMUNICATION
1. Select "SELF-DIAG RESULTS" mode for "METER/M&A" with CONSULT-III.
2. Print out CONSULT-III screen.
>> Go to "CAN SYSTEM". Refer to LAN-15, "
Trouble Diagnosis Flow Chart".
Electrical Component InspectionINFOID:0000000001704508
FUEL LEVEL SENSOR UNIT CHECK
For removal, refer to FL-5, "Removal and Installation" .
Check Fuel Level Sensor Unit and Fuel Pump

DTC P0181 FTT SENSOR
EC-273
< SERVICE INFORMATION >
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1. Turn ignition switch OFF.
2. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and combination
meter terminal 24. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B102, M13
• Harness for open or short between “fuel level sensor unit and fuel pump” and ground.
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to, EC-273, "
Component Inspection".
OK or NG
OK >> GO TO 7.
NG >> Replace “fuel level sensor unit and fuel pump”.
7.CHECK INTERMITTENT INCIDENT
Perform EC-136
.
>>INSPECTION END
Component InspectionINFOID:0000000001702773
FUEL TANK TEMPERATURE SENSOR
1. Check resistance between “fuel level sensor unit and fuel pump”
terminal 4 and 5 by heating with hot water as shown in the fig-
ure.
2. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and InstallationINFOID:0000000001702774
FUEL TANK TEMPERATURE SENSOR
Refer to FL-5. Continuity should exist.
Temperature °C (°F) Resistance kΩ
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
PBIB0931E

DTC P0182, P0183 FTT SENSOR
EC-277
< SERVICE INFORMATION >
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2. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and combination
meter terminal 24. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B102, M13
• Harness for open or short between “fuel level sensor unit and fuel pump” and ground
>> Repair open circuit or short to ground or short to power in harness or connector.
6.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to, EC-277, "
Component Inspection".
OK or NG
OK >> GO TO 7.
NG >> Replace “fuel level sensor unit and fuel pump”.
7.CHECK INTERMITTENT INCIDENT
Perform EC-136
.
>>INSPECTION END
Component InspectionINFOID:0000000001702780
FUEL TANK TEMPERATURE SENSOR
1. Check resistance between “fuel level sensor unit and fuel pump”
terminal 4 and 5 by heating with hot water as shown in the fig-
ure.
2. If NG, replace “fuel level sensor unit and fuel pump”.
Removal and InstallationINFOID:0000000001702781
FUEL TANK TEMPERATURE SENSOR
Refer to FL-5. Continuity should exist.
Temperature °C (°F) Resistance kΩ
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
PBIB0931E

EC-372
< SERVICE INFORMATION >
DTC P0455 EVAP CONTROL SYSTEM
5. Select Service $07 with GST.
• If P0441 is displayed on the screen, go to EC-315, "
Diagnosis Procedure" for DTC P0441.
• If P0442 is displayed on the screen, go to EC-320, "
Diagnosis Procedure" for DTC P0442.
• If P0455 is displayed on the screen, go to EC-372, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001702880
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK >> GO TO 2.
NG >> Replace with genuine NISSAN fuel filler cap.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened properly by rotating the cap clockwise.
OK or NG
OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
2. Retighten until reteaching sound is heard.
3.CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.CHECK FUEL TANK VACUUM RELIEF VALVE
Refer to EC-33, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace fuel filler cap with a genuine one.
5.CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or
disconnection.
Refer to EC-31
.
OK or NG
OK >> GO TO 6.
NG >> Repair or reconnect the hose.
6.CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 7.
7.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
• EVAP canister vent control is installed properly.
Refer to EC-35, "
Removal and Installation".
• EVAP canister vent control valve.
SEF915U

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

FL-1
ENGINE
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SECTION FL
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CONTENTS
FUEL SYSTEM
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
PREPARATION ...................................................3
Special Service Tool .................................................3
Commercial Service Tool ..........................................3
FUEL SYSTEM ....................................................4
Checking Fuel Line ...................................................4
General Precaution ...................................................4
FUEL LEVEL SENSOR UNIT, FUEL FILTER
AND FUEL PUMP ASSEMBLY .........................
5
Component ...............................................................5
Removal and Installation ..........................................5
FUEL TANK .......................................................9
Component ...............................................................9
Removal and Installation ..........................................9
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
14
Standard and Limit ..................................................14

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
FL-5
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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
ComponentINFOID:0000000001703099
Removal and InstallationINFOID:0000000001703100
REMOVAL
WARNING:
Be sure to read “General Precautions” before working on the fuel system. Refer to FL-4, "
General Pre-
caution" .
1. Check fuel level with the vehicle on a level surface. If the fuel
gauge indicates more than the level as shown (7/8 full), drain
fuel from the fuel tank until the fuel gauge indicates level as
shown (7/8 full).
NOTE:
Fuel will be spilled when removing fuel pump assembly if fuel
level is above the fuel pump assembly installation surface.
• As a guide, fuel level is at the level as shown or below when
approximately 12 (3 1/8 US gal, 2 5/8 Imp gal) of fuel is
drained from a full fuel tank.
• In case fuel pump does not operate, perform the following pro-
cedure.
a. Insert fuel tubing of less than 25 mm (0.98 in) in diameter into fuel filler tube through fuel filler opening to
drain fuel from fuel filler tube.
b. Disconnect fuel filler hose from fuel filler tube. Refer to FL-9
.
c. Insert fuel tubing into fuel tank through fuel filler hose to drain fuel from fuel tank.
2. Open fuel door and unscrew the fuel filler cap to release the pressure inside the fuel tank.
3. Release the fuel pressure from the fuel lines. Refer to EC-78, "
Fuel Pressure Check" .
4. Remove rear seat bottom. Refer to SE-14
.
5. Turn the four retainers 90° in a clockwise direction and remove the fuel pump inspection hole cover.
1. Lock ring 2. Fuel level sensor unit, fuel filter and fuel pump assembly 3. O-ring
4. Fuel tank
WCIA0590E
KBIA3505J

FL-6
< SERVICE INFORMATION >
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
6. Disconnect electrical connector (A) and fuel feed hose quick
connector (B).
• Fuel feed hose (1)
•⇐ : Vehicle front
• Disconnect the quick connector using the following procedure.
- Hold the sides of the connector, push in tabs and pull out the
tube.
- If quick connector and tube on fuel pump assembly are stuck,
push and pull several times until they move. Disconnect them
by pulling.
CAUTION:
• The tube can be removed when the tabs are completely
depressed. Do not twist it more than necessary.
• Do not use any tools to remove the quick connector.
• Keep resin tube away from heat. Be especially careful
when welding near the resin tube.
• Prevent acid liquid such as battery electrolyte, from get-
ting on resin tube.
• Do not bend or twist resin tube during installation and removal.
• To keep the connecting portion clean, free of foreign
materials and to avoid damage, cover them completely
with plastic bags or something similar.
• Do not insert plug to prevent damage to O-ring in quick
connector.
7. Remove the lock ring using Tool as shown.
8. Remove fuel level sensor unit, fuel filter and fuel pump assembly (1).
CAUTION:
• Do not bend float arm during removal.
• Do not allow foreign materials to fall into fuel tank. Use a lint free cloth when handling compo-
nents.
• Avoid impacts such as dropping when handling components.
INSPECTION AFTER REMOVAL
WBIA0782E
SFE562A
PBIC0163E
Tool number : KV991J0090 (J-46214)
WBIA0284E

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
FL-7
< SERVICE INFORMATION >
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Make sure that the fuel level sensor unit, fuel filter and fuel pump is free from defects and foreign materials.
INSTALLATION
Installation is in the reverse order of removal.
Fuel Level Sensor Unit, Fuel Filter and Fuel Pump Assembly
1. Install O-ring to fuel tank without twisting.
2. Install fuel level sensor unit with aligning mating marks (A) on
fuel tank and fuel level sensor unit as shown.
•⇐: Front
• Turn the lock ring (1) until the lock ring is fully rotated into the
fuel tank lock tabs (A) as shown.
Quick Connector
Connect fuel feed tube quick connector using the following procedure.
1. Check the connection for damage or any foreign materials.
2. Align the connector with the tube, then insert the connector straight into the tube until a “click” sound is
heard.
3. After connecting, make sure that the connection is secure using the following procedure.
• Visually confirm that the two retainer tabs are secured to the connector.
• Pull the tube and the connector to make sure they are securely
connected.
4. Connect electrical harness connector.
Inspection Hole Cover
• Before installing inspection hole cover, confirm that there are no fuel leaks. Refer to "INSPECTION AFTER
INSTALLATION" .
1. Install inspection hole cover with the front mark (arrow) facing front of vehicle.
2. Lock clips by turning counterclockwise.
INSPECTION AFTER INSTALLATION
Use the following procedure to check for fuel leaks.
PBIC4732E
WBIA0783E
PBIC1653E