2005 INFINITI FX35 fuel filter

EC-992
[VK45DE]
DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION
Revision: 2005 July 2005 FX
5. DETECT MALFUNCTIONING PART
Check the following.

Fuel pump and circuit (Refer to EC-1358, "FUEL PUMP CIRCUIT" .)

Fuel pressure regulator (Refer to EC-789, "FUEL PRESSURE CHECK" .)

Fuel lines (Refer to FL-3, "Checking Fuel Lines" .)

Fuel filter for clogging
>> Repair or replace.
6. CHECK MASS AIR FLOW SENSOR
With CONSULT-II
1. Install all removed parts.
2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II.
With GST
1. Install all removed parts.
2. Check mass air flow sensor signal in “Service $01” with GST.
OK or NG
OK (With CONSULT-II)>>GO TO 7.
OK (Without CONSULT-II)>>GO TO 8.
NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or grounds. Refer to EC-902, "
DTC P0102, P0103 MAF SENSOR" .
7. CHECK FUNCTION OF INJECTOR
With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
3. Make sure that each circuit produces a momentary engine speed drop.
OK or NG
OK >> GO TO 10.
NG >> Perform trouble diagnosis for EC-1351, "
INJECTOR CIRCUIT" .
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
PBIB0133E

DTC P0181 FTT SENSOR EC-1009
[VK45DE]
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EC
Revision: 2005 July 2005 FX
Component InspectionABS007MG
FUEL TANK TEMPERATURE SENSOR
1. Remove fuel level sensor unit.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 4 and 5 by heating with hot water or heat gun as
shown in the figure.
Removal and InstallationABS007MH
FUEL TANK TEMPERATURE SENSOR
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
Temperature °C ( °F) Resistance k Ω
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
PBIB0931E

EC-1014
[VK45DE]
DTC P0182, P0183 FTT SENSOR
Revision: 2005 July 2005 FX
Component InspectionABS007MN
FUEL TANK TEMPERATURE SENSOR
1. Remove fuel level sensor unit.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 4 and 5 by heating with hot water or heat gun as
shown in the figure.
Removal and InstallationABS007MO
FUEL TANK TEMPERATURE SENSOR
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
Temperature °C ( °F) Resistance k Ω
20 (68) 2.3 - 2.7
50 (122) 0.79 - 0.90
PBIB0931E

DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS- FIRE
EC-1029
[VK45DE]
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Revision: 2005 July 2005 FX
12. DETECT MALFUNCTIONING PART
Check the following.

Fuel pump and circuit (Refer to EC-1358, "FUEL PUMP CIRCUIT" .)

Fuel pressure regulator (Refer to EC-789, "FUEL PRESSURE CHECK" .)

Fuel lines (Refer to FL-3, "Checking Fuel Lines" .)

Fuel filter for clogging
>> Repair or replace.
13. CHECK IGNITION TIMING
Check the following items. Refer to EC-769, "
Basic Inspection" .
OK or NG
OK >> GO TO 14.
NG >> Follow the Basic Inspection.
14. CHECK HEATED OXYGEN SENSOR 1 BANK 1/BANK 2
Refer to EC-942, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace malfunctioning heated oxygen sensor 1.
15. CHECK MASS AIR FLOW SENSOR
With CONSULT-II
Check mass air flow sensor signal in “DATA MONITOR” mode with CONSULT-II.
With GST
Check mass air flow sensor signal in “Service $01” with GST.
OK or NG
OK >> GO TO 16.
NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or grounds. Refer to EC-902, "
DTC P0102, P0103 MAF SENSOR" .
16. CHECK SYMPTOM MATRIX CHART
Check items on the rough idle symptom in EC-800, "
Symptom Matrix Chart" .
OK or NG
OK >> GO TO 17.
NG >> Repair or replace.
Items Specifications
Target idle speed 650 ± 50 rpm (in P or N position)
Ignition timing 12 ± 5 ° BTDC (in P or N position)
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm

EC-1118
[VK45DE]
DTC P0460 FUEL LEVEL SENSOR
Revision: 2005 July 2005 FX
Diagnostic ProcedureABS007P7
1. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-32, "
SELF-DIAGNOSTIC RESULTS" .
OK or NG
OK >> GO TO 2.
NG >> Go to DI-22, "
Fuel Level Sensor Signal Inspection" .
2. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Removal and InstallationABS007P8
FUEL LEVEL SENSOR
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"

EC-1120
[VK45DE]
DTC P0461 FUEL LEVEL SENSOR
Revision: 2005 July 2005 FX
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” 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-1120, "
Diagnostic 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-789, "
FUEL PRESSURE RELEASE" .
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-1120, "
Diagnostic Procedure" .
Diagnostic ProcedureABS007PC
1. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-32, "
SELF-DIAGNOSTIC RESULTS" .
OK or NG
OK >> GO TO 2.
NG >> Go to DI-22, "
Fuel Level Sensor Signal Inspection" .
2. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Removal and InstallationABS007PD
FUEL LEVEL SENSOR
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
SEF195Y

EC-1122
[VK45DE]
DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUIT
Revision: 2005 July 2005 FX
Diagnostic ProcedureABS007PH
1. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-32, "
SELF-DIAGNOSTIC RESULTS" .
OK or NG
OK >> GO TO 2.
NG >> Go to DI-22, "
Fuel Level Sensor Signal Inspection" .
2. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Removal and InstallationABS007PI
FUEL LEVEL SENSOR
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .

FUEL PUMP CIRCUIT EC-1363
[VK45DE]
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Revision: 2005 July 2005 FX
Component InspectionABS007X5
FUEL PUMP
1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump” terminals 1 and 3.
Removal and InstallationABS007X6
FUEL PUMP
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
Resistance: 0.2 - 5.0
Ω [at 25 °C (77 °F)]
SEC918C