Nissan Maxima. Instruction — part 459
EC-320
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0442 EVAP CONTROL SYSTEM
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Repair or reconnect the hose.
14.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-327, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace EVAP canister purge volume control solenoid valve.
15.
CHECK FUEL TANK TEMPERATURE SENSOR
EC-272, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Replace fuel level sensor unit and fuel pump. Refer to
FL-6, "Removal and Installation"
16.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-346, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> Replace EVAP control system pressure sensor. Refer to
FL-17, "Removal and Installation"
.
17.
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair or reconnect the hose.
18.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 19.
19.
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 20.
NO
>> Repair or replace hoses and tubes.
20.
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 21.
NO
>> Repair or replace hose, tube or filler neck tube.
21.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-511, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 22.
NO
>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to
22.
CHECK FUEL LEVEL SENSOR
EC-321, "Component Inspection"
Is the inspection result normal?
P0442 EVAP CONTROL SYSTEM
EC-321
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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YES
>> GO TO 23.
NO
>> Replace fuel level sensor unit and fuel pump. Refer to
FL-6, "Removal and Installation"
23.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000010095007
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)
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
DRAIN FILTER
1. Check visually for insect nests in the drain filter air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
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
EC-322
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0442 EVAP CONTROL SYSTEM
4. Blow air into port A and check that it flows freely out of port B.
5. Block port B.
6. Blow air into port A and check that there is no leakage.
7. If NG, replace drain filter.
PBIB3641E
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-323
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Description
INFOID:0000000010095008
The EVAP canister purge volume control solenoid valve is used to
control the flow rate of fuel vapor from the EVAP canister. The EVAP
canister purge volume control solenoid valve is moved by ON/OFF
pulses from the ECM. The longer the ON pulse, the greater the
amount of fuel vapor that will flow via the valve.
DTC Logic
INFOID:0000000010095009
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
• Perform DTC CONFIRMATION PROCEDURE when the fuel is between 1/4 and 3/4 full, and vehicle is
placed on flat level surface.
• Always perform test at a temperature of 5 to 60
°C (41 to 140°F).
• Cool the vehicle so that engine coolant temperature becomes same level as ambient temperature.
Do you have CONSULT
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
PERFORM DTC CONFIRMATION PROCEDURE A
With CONSULT
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT.
3. Check that the following condition are met.
FUEL T/TMP SE: 0 - 35
°C (32 - 95°F)
4. Start engine and wait at least 60 seconds.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE B
PBIB3489E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0443
EVAP canister purge
volume control solenoid
valve
A
The canister purge flow is detected during
the vehicle is stopped while the engine is
running, even when EVAP canister purge
volume control solenoid valve is completely
closed.
• EVAP control system pressure sensor
• EVAP canister purge volume control sole-
noid valve
(The valve is stuck open.)
• EVAP canister vent control valve
• Drain filter
• EVAP canister
• Hoses
(Hoses are connected incorrectly or
clogged.)
B
The canister purge flow is detected during
the specified driving conditions, even when
EVAP canister purge volume control sole-
noid valve is completely closed.
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