Infiniti F50. Manual — part 423
DTC P0442 EVAP CONTROL SYSTEM
EC-333
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EC
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
Refer to
EC-687, "FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)"
.
OK or NG
OK
>> GO TO 5.
NG
>> Replace fuel filler cap with a genuine one.
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
EC-685, "EVAPORATIVE EMISSION LINE
NOTE:
Improper installation of the EVAP service port adapter to the
EVAP service port may cause leaking.
Models with CONSULT-II>>GO TO 6.
Models without CONSULT-II>>GO TO 7.
PBIB1251E
SEF916U
EC-334
DTC P0442 EVAP CONTROL SYSTEM
6.
CHECK FOR EVAP LEAK
With CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-II.
3.
Touch “START” and apply pressure into the EVAP line until the
pressure indicator reaches the middle of the bar graph.
NOTE:
●
Never use compressed air or a high pressure pump.
●
Do not exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi) of pres-
sure in the system.
4.
Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction manual for more details.
Refer to
EC-685, "EVAPORATIVE EMISSION LINE DRAWING"
.
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace.
PEF917U
SEF200U
DTC P0442 EVAP CONTROL SYSTEM
EC-335
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EC
7.
CHECK FOR EVAP LEAK
Without CONSULT-II
1.
Turn ignition switch “OFF”.
2.
Apply 12 volts DC to EVAP canister vent control valve. The valve will close. (Continue to apply 12 volts
until the end of test.)
3.
Apply 12 volts DC to vacuum cut valve bypass valve. The valve will open. (Continue to apply 12 volts until
the end of test.)
4.
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.
NOTE:
●
Never use compressed air or a high pressure pump.
●
Do not exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi) of pressure in the system.
5.
Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction manual for more details. Refer
to
EC-685, "EVAPORATIVE EMISSION LINE DRAWING"
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace.
8.
CHECK WATER SEPARATOR
Refer to
EC-338, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace water separator.
9.
CHECK EVAP CANISTER VENT CONTROL VALVE, O-RING AND CIRCUIT
Refer to
EC-553, "DTC Confirmation Procedure"
OK or NG
OK
>> GO TO 10.
NG
>> Repair or replace EVAP canister vent control valve and O-ring or harness/connector.
PBIB0189E
SEF200U
EC-336
DTC P0442 EVAP CONTROL SYSTEM
10.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1.
Remove EVAP canister with EVAP canister vent control valve attached.
2.
Does water drain from the EVAP canister?
Yes or No
Yes
>> GO TO 11.
No (With CONSULT-II)>>GO TO 13.
No (Without CONSULT-II)>>GO TO 14.
11.
CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve attached.
The weight should be less than 2.1 kg (4.6 lb).
OK or NG
OK (With CONSULT-II)>>GO TO 13.
OK (Without CONSULT-II)>>GO TO 14.
NG
>> GO TO 12.
12.
DETECT MALFUNCTIONING PART
Check the following.
●
EVAP canister for damage
●
EVAP hose between EVAP canister and water separator for clogging or poor connection
>> Repair hose or replace EVAP canister.
13.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-II
1.
Disconnect vacuum hose to 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-II screen to increase “PURG VOL
CONT/V” opening to 100.0%.
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.
SEF596U
PBIB0147E
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