Nissan Murano. Instruction — part 545
EC-290
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0441 EVAP CONTROL SYSTEM
1.
Lift up drive wheels.
2.
Start engine (VDC switch OFF) and warm it up to normal operating temperature.
3.
Turn ignition switch OFF, wait at least 10 seconds.
4.
Turn ignition switch ON.
5.
Turn ignition switch OFF, wait at least 10 seconds.
6.
Start engine and wait at least 70 seconds.
7.
Set voltmeter probes to ECM harness connector terminals under the following conditions.
8.
Check EVAP control system pressure sensor value at idle speed and note it.
9.
Establish and maintain the following conditions for at least 1 minute.
10. Verify that EVAP control system pressure sensor value stays 0.1 V less than the value at idle speed (mea-
sured at step 6) for at least 1 second.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000009720019
1.
CHECK EVAP CANISTER
1.
Turn ignition switch OFF.
2.
Check EVAP canister for cracks.
Is the inspection result normal?
YES-1 >> With CONSULT: GO TO 2.
YES-2 >> Without CONSULT: GO TO 3.
NO
>> Replace EVAP canister. Refer to
2.
CHECK PURGE FLOW
With CONSULT
1.
Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port and install vacuum gauge. For the location of EVAP service port, refer to
.
2.
Start engine and let it idle.
3.
Select “PURG VOL C/V” in “ACTIVE TEST” mode with CONSULT.
4.
Touch “Qd” and “Qu” on CONSULT screen to adjust “PURG VOL C/V” opening and check vacuum exist-
ence.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 4.
ECM
Connector
+
–
Terminal
Terminal
E16
86
(EVAP control system pressure sensor signal)
96
(Sensor ground)
Air conditioner switch
ON
Head lamp switch
ON
Rear window defogger switch
ON
Engine speed
Approx. 3,000 rpm
Gear position
Any position other than P, N or R
PURG VOL C/V
Vacuum
100%
Existed
0%
Not existed
P0441 EVAP CONTROL SYSTEM
EC-291
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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3.
CHECK PURGE FLOW
Without CONSULT
1.
Start engine and warm it up to normal operating temperature.
2.
Stop engine.
3.
Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port and install vacuum gauge. For the location of EVAP service port, refer to
.
4.
Start engine and let it idle.
Do not depress accelerator pedal even slightly.
5.
Check vacuum gauge indication before 60 seconds pass after starting engine.
6.
Rev engine up to 2,000 rpm after 100 seconds pass after starting engine.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 4.
4.
CHECK EVAP PURGE LINE
1.
Turn ignition switch OFF.
2.
Check EVAP purge line for improper connection or disconnection.
Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair EVAP purge line.
5.
CHECK EVAP PURGE HOSE AND PURGE PORT
1.
Disconnect purge hoses connected to EVAP service port A and
EVAP canister purge volume control solenoid valve B.
2.
Blow air into each hose and EVAP purge port C.
3.
Check that air flows freely.
Is the inspection result normal?
YES-1 >> With CONSULT: GO TO 6.
YES-2 >> Without CONSULT: GO TO 7.
NO
>> Repair or clean hoses and/or purge port.
6.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT
1.
Start engine.
2.
Perform “PURG VOL C/V” in “ACTIVE TEST” mode with CONSULT. Check that engine speed varies
according to the valve opening.
Vacuum should not exist.
Vacuum should exist.
SEF367U
SEF368U
EC-292
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0441 EVAP CONTROL SYSTEM
Does engine speed vary according to the valve opening?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-297, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace EVAP canister purge volume control solenoid valve. Refer to
8.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1.
Disconnect EVAP control system pressure sensor harness connector.
2.
Check that water is not inside connectors.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace EVAP control system pressure sensor. Refer to
9.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Replace EVAP control system pressure sensor. Refer to
10.
CHECK RUBBER TUBE FOR CLOGGING
1.
Disconnect rubber tube connected to EVAP canister vent control valve.
2.
Check the rubber tube for clogging.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Clean the rubber tube using an air blower.
11.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-303, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> Replace EVAP canister vent control valve. Refer to
.
12.
CHECK EVAP PURGE LINE
Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leakage.
Refer to
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Repair EVAP purge line.
13.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 14.
14.
CHECK INTERMITTENT INCIDENT
GI-44, "Intermittent Incident"
>> INSPECTION END
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-293
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Description
INFOID:0000000009720020
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.
DTC Logic
INFOID:0000000009720021
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting 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.
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.
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.
Check that the following condition are met.
FUEL T/TMP SE: 0 - 35
°
C (32 - 95
°
F)
3.
Start enfine and wait at least 60 seconds.
4.
Check 1st trip DTC.
IS 1st trip DTC detected?
YES
>> Go to
NO
>> GO TO 3.
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 dur-
ing the cehicle is stopped while the en-
gine 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
(The valve is stuck open.)
• EVAP canister vent control valve
• EVAP canister
• Hoses
(Hoses are connected incorrectly or
clogged.)
B
The canister purge flow is detected dur-
ing the specified driving conditions, even
when EVAP canister purge volume con-
trol solenoid valve is completely closed.
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