Nissan Quest E52. Instruction — part 527
EC-318
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0456 EVAP CONTROL SYSTEM
1.
Remove EVAP canister with EVAP canister vent control valve
and EVAP control system pressure sensor attached.
2.
Check if water will drain from the EVAP canister.
Does water drain from EVAP canister?
YES
>> GO TO 8.
NO-1
>> With CONSULT: GO TO 10.
NO-2
>> Without CONSULT: GO TO 11.
8.
CHECK EVAP CANISTER
Weigh the EVAP canister assembly with the EVAP canister vent control valve and EVAP control system pres-
sure sensor attached. Refer to
.
The weight should be less than 2.1 kg (4.6 lb).
Is the inspection result normal?
YES-1 >> With CONSULT: GO TO 10.
YES-2 >> Without CONSULT: GO TO 11.
NO
>> GO TO 9.
9.
DETECT MALFUNCTIONING PART
Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
>> Repair hose or replace EVAP canister. Refer to
.
10.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
WITH CONSULT
1.
Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
2.
Start engine and let it idle.
3.
Select “PURG VOL CONT/V” in “ACTIVE TEST” mode.
4.
Touch “Qu” on CONSULT screen to increase “PURG VOL CONT/V” opening to 100%.
5.
Check vacuum hose for vacuum.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> GO TO 12.
11.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
WITHOUT CONSULT
1.
Start engine and warm it up to normal operating temperature.
2.
Stop engine.
3.
Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
4.
Start engine and let it idle for at least 80 seconds.
5.
Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> GO TO 12.
12.
CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to
.
Is the inspection result normal?
JMBIA1134GB
Vacuum should exist.
Vacuum should exist.
P0456 EVAP CONTROL SYSTEM
EC-319
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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YES
>> GO TO 13.
NO
>> Repair or reconnect the hose.
13.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-293, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Replace EVAP canister purge volume control solenoid valve. Refer to
14.
CHECK FUEL TANK TEMPERATURE SENSOR
EC-252, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace fuel level sensor unit. Refer to
FL-5, "Removal and Installation"
.
15.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-305, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Replace EVAP control system pressure sensor. Refer to
16.
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Refer to
.
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> Repair or reconnect the hose.
17.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 18.
18.
CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper con-
nection. For location, refer to
.
Is the inspection result normal?
YES
>> GO TO 19.
NO
>> Repair or replace hoses and tubes.
19.
CHECK RECIRCULATION LINE
Check recirculation line between fuel filler tube and fuel tank for clogging, kink, cracks, looseness and
improper connection.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> Repair or replace hose, tube or fuel filler tube. Refer to
20.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-440, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 21.
NO
>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to
21.
CHECK FUEL LEVEL SENSOR
MWI-78, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 22.
EC-320
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0456 EVAP CONTROL SYSTEM
NO
>> Replace fuel level sensor unit. Refer to
FL-5, "Removal and Installation"
.
22.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009651148
1.
CHECK FUEL FILLER CAP
1.
Turn ignition switch OFF.
2.
Remove fuel filler cap. Refer to
.
3.
Wipe clean valve housing.
4.
Install fuel filler cap adapter (commercial service tool) to fuel filler cap.
5.
Check valve opening pressure and vacuum.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE FUEL FILLER CAP
Replace fuel filler cap. Refer to
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may
illuminate.
>> INSPECTION END
SEF445Y
Pressure:
15.3 - 20.0 kPa (0.156 - 0.204 kg/cm
2
, 2.22 -
2.90 psi)
Vacuum:
−
6.0 to
−
3.3 kPa (
−
0.061 to
−
0.034 kg/cm
2
,
−
0.87 to
−
0.48 psi)
SEF943S
P0460 FUEL LEVEL SENSOR
EC-321
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P0460 FUEL LEVEL SENSOR
DTC Logic
INFOID:0000000009651149
DTC DETECTION LOGIC
NOTE:
• If DTC P0460 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P0460 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
When the vehicle is parked, the fuel level in the fuel tank is naturally stable. It means that output signal of the
fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunc-
tion is detected.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait maximum of 2 consecutive minutes.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651150
1.
CHECK COMBINATION METER FUNCTION
Check combination meter function. Refer to
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Proceed to
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0460
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)
• Combination meter
• Fuel level sensor
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