2008 INFINITI FX35 Service Manual

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Page 2217 of 3924

INFINITI FX35 2008 Service Manual
DTC P0455 EVAP CONTROL SYSTEMEC-977
< SERVICE INFORMATION > [VK45DE]
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4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction

DTC P0455 EVAP CONTROL SYSTEMEC-977
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4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction manual for more details. Refer
to EC-618, "
Description".
OK or NG
OK >> GO TO 12.
NG >> Repair or replace.
11 .CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose to EVAP canister purge volu me 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 14.
NG >> GO TO 13.
12.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 to EVAP canister purge volu me 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 15.
NG >> GO TO 13.
13.CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to EC-684, "
Vacuum Hose Drawing".
OK or NG
OK (With CONSULT-III)>>GO TO 14.
OK (Without CONSULT-III)>>GO TO 15.
NG >> Repair or reconnect the hose.
14.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-III
1. Start engine.
2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
OK or NG
OK >> GO TO 16.
NG >> GO TO 15.
15.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-945, "
Component Inspection".
OK or NG
SEF200U
Vacuum should exist.
Vacuum should exist.
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Page 2218 of 3924

INFINITI FX35 2008 Service Manual
EC-978
< SERVICE INFORMATION >[VK45DE]
DTC P0455 EVAP CONTROL SYSTEM
OK >> GO TO 16.
NG >> Replace EVAP canister purge volume control solenoid valve.
16.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to E

Page 2219 of 3924

INFINITI FX35 2008 Service Manual
DTC P0456 EVAP CONTROL SYSTEMEC-979
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DTC P0456 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000001326819
This diagnosis detec

DTC P0456 EVAP CONTROL SYSTEMEC-979
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DTC P0456 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000001326819
This diagnosis detects very small leaks in the EVAP
line between fuel tank and EVAP canister purge volume
control solenoid valve, using the intake manifold vac uum in the same way as conventional EVAP small leak
diagnosis.
If ECM judges a leak which corresponds to a very small leak, the very small leak P0456 will be detected.
If ECM judges a leak equivalent to a small leak, EVAP small leak P0442 will be detected.
If ECM judges there are no leaks, the diagnosis will be OK.
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 No. Trouble diagnosis name DTC detecting condition Possible cause
P0456
0456 Evaporative emission
control system very
small leak (negative
pressure check) EVAP system has a very small leak.
EVAP 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 miss- ing or damaged
EVAP canister is saturated with water
EVAP control system pressure sensor
Refueling EVAP vapor cut valve
ORVR system leaks
Fuel level sensor and the circuit
Foreign matter caught in EVAP canister purge vol- ume control solenoid valve
PBIB1026E
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Page 2220 of 3924

INFINITI FX35 2008 Service Manual
EC-980
< SERVICE INFORMATION >[VK45DE]
DTC P0456 EVAP CONTROL SYSTEM
DTC Confirmation Procedure
INFOID:0000000001326820
NOTE:
If DTC P0456 is displayed with P0442, firs t perform trouble diagnosis

EC-980
< SERVICE INFORMATION >[VK45DE]
DTC P0456 EVAP CONTROL SYSTEM
DTC Confirmation Procedure
INFOID:0000000001326820
NOTE:
If DTC P0456 is displayed with P0442, firs t perform trouble diagnosis for DTC P0456.
After repair, make sure that the hoses and clips are installed properly.
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Open engine hood before conducting following procedure.
If any of following conditions are met just befo re the DTC confirmation procedure, leave the vehicle
for more than 1 hour.
- Fuel filler cap is removed.
- Fuel is refilled or drained.
- EVAP component parts is/are removed.
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Make sure the following conditions are met.
FUEL LEVEL SE: 0.25 - 1.4V
COOLAN TEMP/S: 0 - 32 °C (32 - 90 °F)
FUEL T/TMP SE: 0 - 35 °C (32 - 95 °F)
INT/A TEMP SE: More than 0 °C (32 °F)
If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle) or refilling/draining
fuel until the output voltage condition of the “FUE L LEVEL SE” meets within the range above and leave
the vehicle for more than 1 hour. Then start from step 1).
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select “EVAP V/S LEAK P0456/P1456” of “EVAPO RATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
6. Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-981, "
Diagnosis Procedure".
NOTE:
If the engine speed cannot be maintained with in the range displayed on CONSULT-III screen, go
to EC-658, "
Basic Inspection".
Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid
valve properly.
Overall Function CheckINFOID:0000000001326821
WITH GST
Use this procedure to check the overall function of the EV AP very small leak function. During this check, a 1st
trip DTC might not be confirmed.
CAUTION:
Do not use compressed air, doing so may damage the EVAP system.
Do not start engine.
Do not exceeded 4.12 kPa (0.042 kg/cm
2, 0.6 psi).
1. Attach the EVAP service port adapter securely to the EVAP ser- vice port (2).
EVAP canister purge volume control solenoid valve (1)
PBIB3238E
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Page 2221 of 3924

INFINITI FX35 2008 Service Manual
DTC P0456 EVAP CONTROL SYSTEMEC-981
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2. Set the pressure pump and a hose.
3. Also set a vacuum gauge via 3-way connector and a hose.
4.

Page 2222 of 3924

INFINITI FX35 2008 Service Manual
EC-982
< SERVICE INFORMATION >[VK45DE]
DTC P0456 EVAP CONTROL SYSTEM
NG >> Replace fuel filler cap with a genuine one.
5.INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port a

Page 2223 of 3924

INFINITI FX35 2008 Service Manual
DTC P0456 EVAP CONTROL SYSTEMEC-983
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2. Apply 12 volts DC to EVAP canister vent control
valve. The valve will close. (Continue to appl

Page 2224 of 3924

INFINITI FX35 2008 Service Manual
EC-984
< SERVICE INFORMATION >[VK45DE]
DTC P0456 EVAP CONTROL SYSTEM
OK or NG
OK (With CONSULT-III)>>GO TO 12.
OK (Without CONSULT-III)>>GO TO 13.
NG >> GO TO 11.
11 .DETECT MALFUNCTIONING PART
Check

EC-984
< SERVICE INFORMATION >[VK45DE]
DTC P0456 EVAP CONTROL SYSTEM
OK or NG
OK (With CONSULT-III)>>GO TO 12.
OK (Without CONSULT-III)>>GO TO 13.
NG >> GO TO 11.
11 .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.
12.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose to EVAP canister purge volu me 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 15.
NG >> GO TO 14.
13.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 to EVAP canister purge volu me 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 14.
14.CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to EC-684, "
Vacuum Hose Drawing".
OK or NG
OK >> GO TO 15.
NG >> Repair or reconnect the hose.
15.CHECK EVAP CANISTER PURGE VO LUME CONTROL SOLENOID VALVE
Refer to EC-945, "
Component Inspection".
OK or NG
OK >> GO TO 16.
NG >> Replace EVAP canister purge volume control solenoid valve.
16.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to EC-884, "
Component Inspection".
OK or NG
OK >> GO TO 17.
NG >> Replace fuel level sensor unit.
17.CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR
Vacuum should exist.
Vacuum should exist.
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