2004 INFINITI FX35 Service Manual

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Page 2377 of 4449

INFINITI FX35 2004 Service Manual EC-1036
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DTC P0456 EVAP CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
7. CHECK FOR EVAP LEAK
Without CONSULT-II
1. Turn ignition switch OFF.
2. Apply 12 volts DC to EVAP canister vent

Page 2378 of 4449

INFINITI FX35 2004 Service Manual DTC P0456 EVAP CONTROL SYSTEM
EC-1037
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Revision: 2004 November 2004 FX35/FX45
9. CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP caniste

Page 2379 of 4449

INFINITI FX35 2004 Service Manual EC-1038
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DTC P0456 EVAP CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
13. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-II
1. Start engine and warm

Page 2380 of 4449

INFINITI FX35 2004 Service Manual DTC P0456 EVAP CONTROL SYSTEM
EC-1039
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Revision: 2004 November 2004 FX35/FX45
20. CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for cl

Page 2381 of 4449

INFINITI FX35 2004 Service Manual EC-1040
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DTC P0460 FUEL LEVEL SENSOR
Revision: 2004 November 2004 FX35/FX45
DTC P0460 FUEL LEVEL SENSORPFP:25060
Component DescriptionABS00C6V
The fuel level sensor is mounted in the fuel leve

Page 2382 of 4449

INFINITI FX35 2004 Service Manual DTC P0460 FUEL LEVEL SENSOR
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Diagnostic ProcedureABS00C6Y
1. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to D

Page 2383 of 4449

INFINITI FX35 2004 Service Manual EC-1042
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DTC P0461 FUEL LEVEL SENSOR
Revision: 2004 November 2004 FX35/FX45
DTC P0461 FUEL LEVEL SENSORPFP:25060
Component DescriptionABS00C70
The fuel level sensor is mounted in the fuel leve

EC-1042
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DTC P0461 FUEL LEVEL SENSOR
Revision: 2004 November 2004 FX35/FX45
DTC P0461 FUEL LEVEL SENSORPFP:25060
Component DescriptionABS00C70
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 LogicABS00C71
NOTE:
If DTC P0461 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-792
.
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 CheckABS00C72
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-10,
"FUEL TANK" .
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-700, "
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 OFF and wait at least 10 seconds then turn ON.
6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode with CONSULT-II.
PBIB1508E
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
(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

Page 2384 of 4449

INFINITI FX35 2004 Service Manual DTC P0461 FUEL LEVEL SENSOR
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Revision: 2004 November 2004 FX35/FX45
7. Check “FUEL LEVEL SE” output voltage and note it.
8. Select “FUEL PUMP” in “A

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