Nissan Pathfinder (2011 year). Instruction — part 273
EC-238
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P0442 EVAP CONTROL SYSTEM
DTC Confirmation Procedure
INFOID:0000000006243933
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next step.
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.
TESTING CONDITION:
•
Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed
on flat level surface.
•
Always perform test at a temperature of 0 to 30
°
C (32 to 86
°
F).
WITH CONSULT-III
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
4. Make sure that the following conditions are met.
COOLAN TEMP/S: 0 - 70
°
C (32 - 158
°
F)
INT/A TEMP SE: 0 - 30
°
C (32 - 86
°
F)
5. Select “EVP V/S LEAK P0456/P1456” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instructions displayed.
NOTE:
If the engine speed cannot be maintained within the range displayed on the CONSULT-III screen, go to
6. Make sure that “OK” is displayed.
If “NG” is displayed, refer to
.
NOTE:
Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve
properly.
WITH GST
NOTE:
Be sure to read the explanation of Driving Pattern ON
EC-29, "SRT Set Driving Pattern"
before driving vehi-
cle.
1. Start engine.
2. Drive vehicle according to Driving Pattern,
EC-71, "DIAGNOSIS DESCRIPTION : Driving Pattern"
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds.
5. Turn ignition switch ON.
6. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
7. Select Service $07 with GST.
-
If P0442 is displayed on the screen, go to
.
-
If P0441 is displayed on the screen, go to
.
Diagnosis Procedure
INFOID:0000000006243934
1.
CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK
>> GO TO 2.
NG
>> Replace with genuine NISSAN fuel filler cap. Refer to
FL-6, "Removal and Installation"
.
SEF915U
2011 Pathfinder
P0442 EVAP CONTROL SYSTEM
EC-239
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
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2.
CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened properly by rotating the cap clockwise.
OK or NG
OK
>> GO TO 3.
NG
>> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
2. Retighten until ratcheting sound is heard.
3.
CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
CHECK FUEL TANK VACUUM RELIEF VALVE
EC-243, "Component Inspection"
OK or NG
OK
>> GO TO 5.
NG
>> Replace fuel filler cap with a genuine one. Refer to
FL-6, "Removal and Installation"
.
5.
INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump to EVAP service port securely. For the location of EVAP
service port, refer to
.
NOTE:
Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking.
With CONSULT-III>>GO TO 6.
Without CONSULT-III>>GO TO 7.
6.
CHECK FOR EVAP LEAK
With CONSULT-III
1. Turn ignition switch ON.
2. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-III.
3. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of
the bar graph.
CAUTION:
BBIA0550E
SEF916U
2011 Pathfinder
EC-240
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P0442 EVAP CONTROL SYSTEM
• Never use compressed air or a high pressure pump.
• Never exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi) of pressure in the system.
4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction instruction for more details.
.
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace.
7.
CHECK FOR EVAP LEAK
Without CONSULT-III
1. Turn ignition switch OFF.
2. Apply 12 volts DC to EVAP canister vent control valve (3). The
valve will close. (Continue to apply 12 volts until the end of test.)
-
Fuel filler pipe (top of frame view) (1)
-
EVAP control system pressure sensor (2)
-
EVAP canister (4)
-
Drain filter (5)
-
: Vehicle front
3. Pressurize the EVAP line using pressure pump with 1.3 to 2.7
kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove pump and
EVAP service port adapter.
CAUTION:
• Never use compressed air or a high pressure pump.
• Never exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi) of pressure in the system.
4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction instruction for more details. Refer
.
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace.
8.
CHECK DRAIN FILTER
EC-243, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace drain filter. Refer to
.
9.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
• EVAP canister vent control valve is installed properly.
FL-16, "Removal and Installation"
• EVAP canister vent control valve.
EC-255, "Component Inspection"
.
OK or NG
OK
>> GO TO 10.
SEF200U
AWBIA0134ZZ
SEF200U
2011 Pathfinder
P0442 EVAP CONTROL SYSTEM
EC-241
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
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NG
>> Repair or replace EVAP canister vent control valve and O-ring. Refer to
10.
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached. Refer to
FL-16, "Removal and Installation"
.
2. Does water drain from the EVAP canister?
Yes or No
Yes
>> GO TO 11.
No (With CONSULT-III)>>GO TO 13.
No (Without CONSULT-III)>>GO TO 14.
11.
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 2.0 kg (4.4 lb).
OK or NG
OK (With CONSULT-III)>>GO TO 13.
OK (Without CONSULT-III)>>GO TO 14.
NG
>> GO TO 12.
12.
DETECT MALFUNCTIONING PART
Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and drain filter for clogging or poor connection
>> Repair hose or replace EVAP canister. Refer to
FL-16, "Removal and Installation"
13.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose from EVAP canister purge volume control solenoid valve at EVAP service port.
2. Start engine.
3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode.
4. Touch “Qu” on CONSULT-III screen to increase “PURG VOL CONT/V” opening to 100%.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
OK or NG
OK
>> GO TO 17.
NG
>> GO TO 15.
14.
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 from 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.
OK or NG
OK
>> GO TO 16.
NG
>> GO TO 15.
BBIA0558E
Vacuum should exist.
2011 Pathfinder
EC-242
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P0442 EVAP CONTROL SYSTEM
15.
CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to
.
OK or NG
OK
>> GO TO 16.
NG
>> Repair or reconnect the hose.
16.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-252, "Component Inspection"
OK or NG
OK
>> GO TO 17.
NG
>> Replace EVAP canister purge volume control solenoid valve. Refer to
17.
CHECK FUEL TANK TEMPERATURE SENSOR
EC-201, "Component Inspection"
OK or NG
OK
>> GO TO 18.
NG
>> Replace fuel level sensor unit. Refer to
FL-11, "Removal and Installation"
18.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-268, "Component Inspection"
OK or NG
OK
>> GO TO 19.
NG
>> Replace EVAP control system pressure sensor. Refer to
FL-16, "Removal and Installation"
.
19.
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
.
OK or NG
OK
>> GO TO 20.
NG
>> Repair or reconnect the hose.
20.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 21.
21.
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
.
OK or NG
OK
>> GO TO 22.
NG
>> Repair or replace hoses and tubes.
22.
CHECK RECIRCULATION LINE
Check recirculation line between filler neck tube and fuel tank for clogging, kinks, cracks, looseness and
improper connection.
OK or NG
OK
>> GO TO 23.
NG
>> Repair or replace hose, tube or filler neck tube.
23.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-416, "Component Inspection"
OK or NG
OK
>> GO TO 24.
NG
>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to
FL-6, "Removal and Installation"
.
2011 Pathfinder
P0442 EVAP CONTROL SYSTEM
EC-243
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
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24.
CHECK FUEL LEVEL SENSOR
MWI-35, "Component Inspection"
.
OK or NG
OK
>> GO TO 25.
NG
>> Replace fuel level sensor unit. Refer to
FL-11, "Removal and Installation"
25.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
.
>>
INSPECTION END
Component Inspection
INFOID:0000000006243935
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)
1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
3. If out of specification, replace fuel filler cap as an assembly.
FL-6, "Removal and Installation"
.
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incor-
rect fuel filler cap is used, the MIL may illuminate.
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.
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. Refer to
.
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
PBIB3641E
2011 Pathfinder
EC-244
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Description
INFOID:0000000006243936
SYSTEM DESCRIPTION
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-
sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is
determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor
from the EVAP canister is regulated as the air flow changes.
COMPONENT DESCRIPTION
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 through the valve.
On Board Diagnosis Logic
INFOID:0000000006243937
Sensor
Input Signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
1
EVAP canister
purge flow control
EVAP canister purge vol-
ume control solenoid valve
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Battery
Battery voltage*
1
Throttle position sensor
Throttle position
Accelerator pedal position sensor
Accelerator pedal position
Air fuel ratio (A/F) sensor 1
Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Fuel tank temperature sensor
Fuel temperature in fuel tank
Wheel sensor
Vehicle speed*
2
PBIB2057E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0443
0443
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 so-
lenoid valve
(EVAP canister purge volume control so-
lenoid 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.
2011 Pathfinder
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-245
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
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DTC Confirmation Procedure
INFOID:0000000006243938
Perform PROCEDURE FOR MALFUNCTION A first.
If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR MALFUNCTION A
TESTING CONDITION:
• Perform “DTC Confirmation Procedure” when the fuel level 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.
With CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Check that the following condition are met.
FUEL T/TMP SE: 0 – 35
°
C (32 – 95
°
F)
3. Start engine and wait at least 60 seconds.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to
With GST
1. Turn ignition switch ON.
2. Set voltmeter probes to ECM terminal 107 (FTT sensor signal)
and ground.
3. Check that the voltage is 3.1 – 4.2 V.
4. Start engine and wait at least 60 seconds.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to
PROCEDURE FOR MALFUNCTION B
NOTE:
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:
Always perform test at a temperature of 5
°
C (41
°
F) or more.
With CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select “PURG VOL CN/V P1444” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with
CONSULT-III.
5. Touch “START”.
6. Start engine and let it idle until “TESTING” on CONSULT-III changes to “COMPLETED”. (It will take
approximately 10 seconds.)
If “TESTING” is not displayed after 5 minutes, retry from step 2.
7. Check that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to
With GST
JPBIA4822ZZ
2011 Pathfinder
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