Nissan Murano Z51. Instruction — part 577
EC-316
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0456 EVAP CONTROL SYSTEM
NOTE:
Use Component Function Check to check the overall function of the EVAP very small leakage function. During
this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Component Function Check
INFOID:0000000005536702
1.
PERFORM COMPONENT FUNCTION CHECK
With GST
CAUTION:
• Never use compressed air, doing so may damage the EVAP system.
• Never start engine.
• Never exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi).
1.
Attach the EVAP service port adapter (commercial service tool) securely to the EVAP service port.
2.
Set the pressure pump and a hose.
3.
Also set a vacuum gauge via 3-way connector and a hose.
4.
Turn ignition switch ON.
5.
Connect GST and select Service $08.
6.
Using Service $08 control the EVAP canister vent control valve
(close).
7.
Apply pressure and make sure the following conditions are sat-
isfied.
Pressure to be applied: 2.7 kPa (0.028 kg/cm
2
, 0.39 psi)
Time to be waited after the pressure drawn in to the EVAP
system and the pressure to be dropped: 60 seconds and
the pressure should not be dropped more than 0.4 kPa
(0.004 kg/cm
2
, 0.06 psi).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Go to
2.
RELEASE PRESSURE
1.
Disconnect GST.
2.
Start engine and warm it up to normal operating temperature.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Restart engine and let it idle for 90 seconds.
5.
Keep engine speed at 2,000 rpm for 30 seconds.
6.
Turn ignition switch OFF.
NOTE:
For more information, refer to GST Instruction Instruction.
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005536703
1.
CHECK FUEL FILLER CAP DESIGN
1.
Turn ignition switch OFF.
SEF462UI
P0456 EVAP CONTROL SYSTEM
EC-317
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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2.
Check for genuine NISSAN fuel filler cap design.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> 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.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. Retighten until
ratcheting sound is heard.
3.
CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK FUEL TANK VACUUM RELIEF VALVE
EC-320, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace fuel filler cap with a genuine one.
5.
CHECK FOR EVAP LEAKAGE
.
Is there any leakage in EVAP line?
YES
>> Repair or replace malfunctioning part.
NO
>> GO TO 6.
6.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
• EVAP canister vent control valve is installed properly.
EC-534, "Removal and Installation"
• EVAP canister vent control valve.
EC-288, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace EVAP canister vent control valve and O-ring.
7.
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
SEF915U
EC-318
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0456 EVAP CONTROL SYSTEM
Remove EVAP canister with EVAP canister vent control valve and
EVAP control system pressure sensor attached.
Does water drain from the EVAP canister?
YES
>> GO TO 8.
NO-1
>> With CONSULT-III: GO TO 10.
NO-2
>> Without CONSULT-III: GO TO 11.
8.
CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 10.
YES-2 >> Without CONSULT-III: 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.
10.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1.
Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control sole-
noid valve from EVAP service port.
2.
Start engine.
3.
Perform “PURG VOL C/V” in “ACTIVE TEST” mode.
4.
Touch “Qu” on CONSULT-III screen to increase “PURG VOL C/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-III
1.
Start engine and warm it up to normal operating temperature.
2.
Stop engine.
3.
Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control sole-
noid valve from 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 14.
NO
>> GO TO 12.
12.
CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to
JMBIA1134GB
Vacuum should exist.
Vacuum should exist.
P0456 EVAP CONTROL SYSTEM
EC-319
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Repair or reconnect the hose.
13.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-282, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Replace EVAP canister purge volume control solenoid valve.
14.
CHECK FUEL TANK TEMPERATURE SENSOR
EC-232, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace fuel level sensor unit.
15.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-296, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Replace EVAP control system pressure sensor.
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, kinks, looseness and improper
connection. 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 filler neck tube and fuel tank for clogging, kinks, cracks, looseness and
improper connection.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> Repair or replace hose, tube or filler neck tube.
20.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-454, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 21.
NO
>> Replace refueling EVAP vapor cut valve with fuel tank.
21.
CHECK FUEL LEVEL SENSOR
MWI-46, "Component Inspection"
.
Is the inspection result normal?
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