2009 INFINITI QX56 Factory Service Manual

ABS ECU fuses key fob battery fuel consumption engine oil

Page 1537 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-210
< COMPONENT DIAGNOSIS >[VK56DE]
P0441 EVAP CONTROL SYSTEM
P0441 EVAP CONTROL SYSTEM
System DescriptionINFOID:0000000003771476
NOTE:
If DTC P0441 is displayed with other DTC such
as P2122, P21

Page 1538 of 4171

INFINITI QX56 2009 Factory Service Manual
P0441 EVAP CONTROL SYSTEMEC-211
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
TESTING CONDITION:
Always perform test at a temperature of 5
°C (41 °F) or more.
WITH CONSULT-III
1

P0441 EVAP CONTROL SYSTEMEC-211
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
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. Start engine and let it idle for at least 70 seconds.
4. Select “PURG FLOW P0441” of “EVAPORATIVE SYS TEM” in “DTC WORK SUPPORT” mode with CON-
SULT-III.
5. Touch “START”. If “COMPLETED” is displayed, go to step 7.
6. When the following conditions are met, “TESTING ” will be displayed on the CONSULT-III screen. Maintain
the conditions continuously until “TES TING” changes to “COMPLETED”. (It will take at least 35 seconds.)
If “TESTING” is not changed for a long time, retry from step 2.
7. Make sure that “OK” is displayed after touching “S ELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
211, "Diagnosis Procedure".
Overall Function CheckINFOID:0000000003771479
Use this procedure to check the overall monitoring func tion of the EVAP control system purge flow monitoring.
During this check, a 1st trip DTC might not be confirmed.
WITH GST
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. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM te rminals 32 (EVAP control system
pressure sensor signal) and ground.
6. Check EVAP control system pressure sensor value at idle speed
and note it.
7. Establish and maintain the following conditions for at least 1 minute.
8. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (mea-
sured at step 6) for at least 1 second.
9. If NG, go to EC-211, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003771480
1.CHECK EVAP CANISTER
1. Turn ignition switch OFF.
2. Check EVAP canister for cracks.
OK or NG
OK (With CONSULT-III)>>GO TO 2.
Selector lever Suitable position
VHCL SPEED SE 32 - 120 km/h (20 - 75 MPH)
ENG SPEED 500 - 3,000 rpm
B/FUEL SCHDL 1.0 - 12.0 msec
COOLAN TEMP/S 0 - 119 °C (32 - 246 °F)
Air conditioner switch ON
Headlamp switch ON
Rear window defogger switch ON
Engine speed Approx. 3,000 rpm
Gear position Any position other than P, N or R
PBIB1109E
Revision: December 20092009 QX56

Page 1539 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-212
< COMPONENT DIAGNOSIS >[VK56DE]
P0441 EVAP CONTROL SYSTEM
OK (Without CONSULT-III)>>GO TO 3.
NG >> Replace EVAP canister.
2.CHECK PURGE FLOW
With CONSULT-III
1. Disconnect vacuum hose connec

Page 1540 of 4171

INFINITI QX56 2009 Factory Service Manual
P0441 EVAP CONTROL SYSTEMEC-213
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
1. Disconnect purge hoses connect
ed to EVAP service port A and
EVAP canister purge volume control sol

Page 1541 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-214
< COMPONENT DIAGNOSIS >[VK56DE]
P0441 EVAP CONTROL SYSTEM
2. Check the rubber tube for clogging.
OK or NG
OK >> GO TO 11.
NG >> Clean the rubber tube using an air blower.
11 .CHECK EVAP CANIST

Page 1542 of 4171

INFINITI QX56 2009 Factory Service Manual
P0442 EVAP CONTROL SYSTEMEC-215
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
P0442 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000003771481
This diagnosis detects leaks

P0442 EVAP CONTROL SYSTEMEC-215
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
P0442 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000003771481
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.
If pressure does not increase, the ECM will check for l
eaks in the line between the fuel tank and EVAP canister
purge volume control solenoid valve, under the following “Vacuum test” conditions.
The EVAP canister vent control valve is closed to s hut the EVAP purge line off. The EVAP canister purge vol-
ume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold
vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed.
CAUTION:
Use only a genuine NISSAN fuel filler cap as a replacemen t. If an incorrect fuel filler cap is used, the
MIL may come on.
If the fuel filler cap is not tigh tened properly, the MIL may come on.
Use only a genuine NISSAN rubber tube as a replacement.
DTC Confirmation ProcedureINFOID:0000000003771482
NOTE:
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0442
0442 EVAP control system
small leak detected
(negative pressure) EVAP control system has a leak, EVAP
control system does not operate prop-
erly. Incorrect fuel tank vacuum relief valve
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close.
Foreign matter caught in fuel filler cap.
Leak is in line between intake manifold and EVAP
canister purge volume control solenoid valve.
Foreign matter caught in EVAP canister vent con- trol valve.
EVAP canister or fuel tank leaks
EVAP purge line (pipe and rubber tube) leaks
EVAP purge line rubber tube bent
Loose or disconnected rubber tube
EVAP canister vent control valve and the circuit
EVAP canister purge volume control solenoid valve and the circuit
Fuel tank temperature sensor
O-ring of EVAP canister vent control valve is missing or damaged
EVAP canister is saturated with water
EVAP control system pressure sensor
Fuel level sensor and the circuit
Refueling EVAP vapor cut valve
ORVR system leaks
PBIB1026E
Revision: December 20092009 QX56

Page 1543 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-216
< COMPONENT DIAGNOSIS >[VK56DE]
P0442 EVAP CONTROL SYSTEM
If DTC Confirmation Procedure has been previously
conducted, always perform the following before con-
ducting the next step.
1. Tur

EC-216
< COMPONENT DIAGNOSIS >[VK56DE]
P0442 EVAP CONTROL SYSTEM
If DTC Confirmation Procedure has been previously
conducted, always perform the following before con-
ducting the next step.
1. Turn ignition swich OFF and wait at least 10 seconds.
2. Turn ignition swich ON.
3. Turn ignition swich 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 SML LEAK P0442/P1442” of “EVAPO RATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
NOTE:
If the engine speed cannot be maintained within t he range displayed on the CONSULT-III screen, go to
EC-13, "Basic Inspection"
.
6. Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-216, "Diagnosis Procedure"
.
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 EC-456, "DTC Index"
before driving vehicle.
1. Start engine.
2. Drive vehicle according to EC-456, "DTC Index"
.
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Select Service $07 with GST.
- If P0442 is displayed on the screen, go to EC-216, "Diagnosis Procedure"
.
- If P0441 is displayed on the screen, go to EC-211, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003771483
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.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened proper ly by rotating the cap clockwise.
SEF915U
Revision: December 20092009 QX56

Page 1544 of 4171

INFINITI QX56 2009 Factory Service Manual
P0442 EVAP CONTROL SYSTEMEC-217
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
OK or NG
OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads usi

Load next 8 pages

Page: < prev 1-10 ... 1505-1512 1513-1520 1521-1528 1529-1536 1537-1544 1545-1552 1553-1560 1561-1568 1569-1576 ... 4176 next >

trip computer overheating charging phone radiator warning light