2008 INFINITI FX35 Service Manual

fuel tank capacity tire pressure tire type hood open wheel size glove box

Page 2225 of 3924

INFINITI FX35 2008 Service Manual
DTC P0456 EVAP CONTROL SYSTEMEC-985
< SERVICE INFORMATION > [VK45DE]
C
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EC
NP
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Refer to
EC-965, "Component Inspection".
OK or NG
OK >> GO TO 18.
NG >> Replace EVAP control syst

Page 2226 of 3924

INFINITI FX35 2008 Service Manual
EC-986
< SERVICE INFORMATION >[VK45DE]
DTC P0460 FUEL LEVEL SENSOR
DTC P0460 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001326823
The fuel level sensor is mounted in the fuel level sensor u

EC-986
< SERVICE INFORMATION >[VK45DE]
DTC P0460 FUEL LEVEL SENSOR
DTC P0460 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001326823
The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the “unified meter and A/C amp.”. The “unified meter and A/C amp.”
sends the fuel level sensor signal to the ECM through CAN commu-
nication 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.
On Board Diagn
osis LogicINFOID:0000000001326824
NOTE:
If DTC P0460 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-724
.
If DTC P0460 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-726
.
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 sloshi ng signal from the sensor, fuel level sensor malfunc-
tion is detected.
DTC Confirmation ProcedureINFOID:0000000001326825
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.
1. Start engine and wait maximum of 2 consecutive minutes.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-986, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001326826
1.CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-27, "
CONSULT-III Function (METER/M&A)".
OK or NG
OK >> GO TO 2.
NG >> Go to DI-19, "
Fuel Level Sensor Signal Inspection".
2.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
PBIB1508E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0460
0460 Fuel level sensor circuit
noise Even though the vehicle is parked, a signal be-
ing varied is sent from the fuel level sensor to
ECM. Harness or connectors
(The CAN communication line is open or
shorted)
Harness or connectors
(The sensor circuit is open or shorted)
Unified meter and A/C amp.
Fuel level sensor
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 2227 of 3924

INFINITI FX35 2008 Service Manual
DTC P0460 FUEL LEVEL SENSOREC-987
< SERVICE INFORMATION > [VK45DE]
C
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M A
EC
NP
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Removal and InstallationINFOID:0000000001326827
FUEL LEVEL SENSOR
Refer to
FL-4
3AA93ABC3ACD3AC03ACA

Page 2228 of 3924

INFINITI FX35 2008 Service Manual
EC-988
< SERVICE INFORMATION >[VK45DE]
DTC P0461 FUEL LEVEL SENSOR
DTC P0461 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001326828
The fuel level sensor is mounted in the fuel level sensor u

EC-988
< SERVICE INFORMATION >[VK45DE]
DTC P0461 FUEL LEVEL SENSOR
DTC P0461 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001326828
The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the “unified meter and A/C amp.”. The “unified meter and A/C amp.”
sends the fuel level sensor signal to the ECM through CAN commu-
nication 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.
On Board Diagn
osis LogicINFOID:0000000001326829
NOTE:
If DTC P0461 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-724
.
If DTC P0461 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-726
.
Driving long distances naturally affect fuel gauge level.
This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has
been driven.
Overall Function CheckINFOID:0000000001326830
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-10
.
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-665, "
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” 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.
PBIB1508E
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
(The CAN communication line is open or
shorted)
Harness or connectors
(The sensor circuit is open or shorted)
Unified meter and A/C amp.
Fuel level sensor
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 2229 of 3924

INFINITI FX35 2008 Service Manual
DTC P0461 FUEL LEVEL SENSOREC-989
< SERVICE INFORMATION > [VK45DE]
C
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EC
NP
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10. Check “FUEL LEVEL SE” output voltage and note it.
11. Fill fuel into the fuel tank for 30

Page 2230 of 3924

INFINITI FX35 2008 Service Manual
EC-990
< SERVICE INFORMATION >[VK45DE]
DTC P0462, P0463
FUEL LEVEL SENSOR
DTC P0462, P0463 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001326833
The fuel level sensor is mounted in the fuel

EC-990
< SERVICE INFORMATION >[VK45DE]
DTC P0462, P0463
FUEL LEVEL SENSOR
DTC P0462, P0463 FUEL LEVEL SENSOR
Component DescriptionINFOID:0000000001326833
The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the “unified meter and A/C amp.”. The “unified meter and A/C amp.”
sends the fuel level sensor signal to the ECM through CAN commu-
nication 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.
On Board Diagnosis LogicINFOID:0000000001326834
NOTE:
If DTC P0462 or P0463 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for
DTC U1000, U1001. Refer to EC-724
.
If DTC P0462 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-726
.
This diagnosis indicates the former, to detect open or short circuit malfunction.
DTC Confirmation ProcedureINFOID:0000000001326835
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-990, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001326836
1.CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-27, "
CONSULT-III Function (METER/M&A)".
OK or NG
OK >> GO TO 2.
NG >> Go to DI-19, "
Fuel Level Sensor Signal Inspection".
2.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
PBIB1508E
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
(The CAN communication line is open or
shorted)
Harness or connectors (The sensor circuit is open or shorted)
Unified meter and A/C amp.
Fuel level sensor
P0463
0463
Fuel level sensor circuit
high input An excessively high voltage from the sensor is
sent to ECM.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 2231 of 3924

INFINITI FX35 2008 Service Manual
DTC P0462, P0463 FUEL LEVEL SENSOREC-991
< SERVICE INFORMATION > [VK45DE]
C
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G H
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K L
M A
EC
NP
O
Removal and InstallationINFOID:0000000001326837
FUEL LEVEL SENSOR
Refer to
FL-4.
3AA93ABC3AC

Page 2232 of 3924

INFINITI FX35 2008 Service Manual
EC-992
< SERVICE INFORMATION >[VK45DE]
DTC P0500 VSS
DTC P0500 VSS
DescriptionINFOID:0000000001326838
NOTE:

If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis f

EC-992
< SERVICE INFORMATION >[VK45DE]
DTC P0500 VSS
DTC P0500 VSS
DescriptionINFOID:0000000001326838
NOTE:

If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-724
.
If DTC P0500 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-726
.
The vehicle speed signal is sent to the “unified meter and A/C amp.” from the “ABS actuator and electric unit
(control unit)” by CAN communication line. The “unifi ed meter and A/C amp.” then sends a signal to the ECM
by CAN communication line.
On Board Diagn osis LogicINFOID:0000000001326839
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation ProcedureINFOID:0000000001326840
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 (VDC switch OFF).
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-993, "
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.
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
(The CAN communication line is open or short-
ed)
Harness or connectors (The vehicle speed signal circuit is open or
shorted)
Wheel sensor
Unified meter and A/C amp.
ABS actuator and electric unit (control unit)
Detected items 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 1,600 - 6,000 rpm
COOLAN TEMP/S More than 70
°C (158 °F)
B/FUEL SCHDL 4.5 - 31.8 msec
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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