Nissan Frontier. Instruction — part 437
P0456 EVAP CONTROL SYSTEM
EC-319
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
DTC Confirmation Procedure
INFOID:0000000009480979
NOTE:
• If DTC P0456 is displayed with P0442, first 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 conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
• Open engine hood before conducting the following procedure.
• If any of following conditions are met just before the DTC confirmation procedure, leave the vehicle
for more than 1 hour.
- Fuel filler cap is removed.
- Refilled or drained the fuel.
- EVAP component part/parts is/are removed.
• Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT.
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 refill/drain fuel
until the output voltage of the “FUEL 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 “EVP V/S LEAK P0456/P1456” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT.
Follow the instructions displayed.
6. Make sure that “OK” is displayed.
If “NG” is displayed, refer to
.
NOTE:
• If the engine speed cannot be maintained within the range displayed on CONSULT screen, go to
.
• Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid
valve properly.
Overall Function Check
INFOID:0000000009480980
WITH GST
Use this procedure to check the overall function of the EVAP very small leak function. During this check, a 1st
trip DTC might not be confirmed.
CAUTION:
• Never use compressed air, doing so may damage the EVAP system.
• Never start engine.
• Never exceeded 4.12 kPa (0.042 kg/cm
2
, 0.6 psi).
1. Attach the EVAP service port adapter (commercial service tool)
securely to the EVAP service port.
BBIA0620E
EC-320
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
P0456 EVAP CONTROL SYSTEM
2. Set the pressure pump and a hose.
3. Also set a vacuum gauge via 3-way connector and a hose.
4. Turn ignition switch ON.
5. Connect GST and select Service $08.
6. Using Service $08 control the EVAP canister vent control valve
(close).
7. Apply pressure and make sure the following conditions are sat-
isfied.
Pressure to be applied: 2.7 kPa (0.028 kg/cm
2
, 0.39 psi)
Time to be waited after the pressure drawn in to the EVAP
system and the pressure to be dropped: 60 seconds and
the pressure should not be dropped more than 0.4 kPa
(0.004 kg/cm
2
, 0.06 psi).
If NG, go to
If OK, go to next step.
8. Disconnect GST.
9. Start engine and warm it up to normal operating temperature.
10. Turn ignition switch OFF and wait at least 10 seconds.
11. Restart engine and let it idle for 90 seconds.
12. Keep engine speed at 2,000 rpm for 30 seconds.
13. Turn ignition switch OFF.
NOTE:
For more information, refer to GST Instruction Instruction.
Diagnosis Procedure
INFOID:0000000009480981
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 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-316, "Component Inspection"
OK or NG
OK
>> GO TO 5.
NG
>> Replace fuel filler cap with a genuine one.
SEF462UI
SEF915U
P0456 EVAP CONTROL SYSTEM
EC-321
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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.
NOTE:
Improper installation of the EVAP service port adapter to the
EVAP service port may cause leaking.
With CONSULT>>GO TO 6.
Without CONSULT>>GO TO 7.
6.
CHECK FOR EVAP LEAK
With CONSULT
1. Turn ignition switch ON.
2. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT.
3. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of
the bar graph.
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.
EC-469, "How to Detect Fuel Vapor Leakage"
.
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace.
7.
CHECK FOR EVAP LEAK
Without CONSULT
1. Turn ignition switch OFF.
BBIA0620E
SEF916U
SEF200U
EC-322
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
P0456 EVAP CONTROL SYSTEM
2. Apply 12 volts DC to EVAP canister vent control valve (1). The
valve will close. (Continue to apply 12 volts until the end of test.)
- EVAP control system pressure sensor (2)
- Drain filter (3)
- EVAP canister (4)
-
: Vehicle front
3. Pressurize the EVAP line using pressure pump with 1.3 to 2.7
kPa (0.013 to 0.028 kg/cm
2
, 0.19 to 0.39 psi), 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
EC-469, "How to Detect Fuel Vapor Leakage"
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace.
8.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
• EVAP canister vent control valve is installed properly.
FL-14, "Removal and Installation"
• EVAP canister vent control valve.
EC-453, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Repair or replace EVAP canister vent control valve and O-ring.
9.
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.
2. Does water drain from the EVAP canister?
Yes or No
Yes
>> GO TO 10.
No (With CONSULT)>>GO TO 12.
No (Without CONSULT)>>GO TO 13.
10.
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)>>GO TO 12.
OK (Without CONSULT)>>GO TO 13.
ALBIA0514ZZ
SEF200U
BBIA0558E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст