Nissan Altima L32. Instruction — part 557
P0455 EVAP CONTROL SYSTEM
EC-1349
< COMPONENT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
8.
CHECK FOR EVAP LEAKAGE
Is there any leakage in EVAP line?
YES
>> Repair or replace.
NO-1 >> With CONSULT-III: GO TO 9.
NO-2 >> Without CONSULT-III: GO TO 10.
9.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose from EVAP canister purge volume control solenoid valve at EVAP service port.
2. Start engine.
3. Perform “PURG VOL C/V” in “ACTIVE TEST” mode.
4. Touch “Qu” on CONSULT-III screen to increase “PURG VOL C/V” opening to 100%.
5. Check vacuum hose for vacuum.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> GO TO 11.
10.
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 from EVAP canister purge volume 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.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> GO TO 11.
11.
CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 12.
YES-2 >> Without CONSULT-III: GO TO 13.
NO
>> Repair or reconnect the hose.
12.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-III
1. Start engine.
2. Perform “PURG VOL C/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed varies
according to the valve opening.
Does engine speed vary according to the valve opening?
YES
>> GO TO 14.
NO
>> GO TO 13.
13.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-1319, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Replace EVAP canister purge volume control solenoid valve.
14.
CHECK FUEL TANK TEMPERATURE SENSOR
Vacuum should exist.
Vacuum should exist.
EC-1350
< COMPONENT DIAGNOSIS >
[VQ35DE]
P0455 EVAP CONTROL SYSTEM
EC-1276, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace fuel level sensor unit.
15.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-1334, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Replace EVAP control system pressure sensor.
16.
CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kinks, looseness and improper
connection. For location, refer to
.
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> Repair or replace hoses and tubes.
17.
CHECK RECIRCULATION LINE
Check recirculation line between fuel filler tube and fuel tank for clogging, kinks, cracks, looseness and
improper connection.
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair or replace hose, tube or fuel filler tube.
18.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-1500, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 19.
NO
>> Replace refueling EVAP vapor cut valve with fuel tank.
19.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000004362187
1.
CHECK FUEL FILLER CAP
1. Turn ignition switch OFF.
2. Remove fuel filler cap.
3. Wipe clean valve housing.
4. Install fuel filler cap adapter (commercial service tool) to fuel filler cap.
SEF445Y
P0455 EVAP CONTROL SYSTEM
EC-1351
< COMPONENT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
5. Check valve opening pressure and vacuum.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE FUEL FILLER CAP
Replace fuel filler cap.
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may
illuminate.
>> INSPECTION END
Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm
2
, 2.22 -
2.90 psi)
Vacuum:
−6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm
2
,
−0.87 to −0.48 psi)
SEF943S
EC-1352
< COMPONENT DIAGNOSIS >
[VQ35DE]
P0456 EVAP CONTROL SYSTEM
P0456 EVAP CONTROL SYSTEM
DTC Logic
INFOID:0000000004362188
DTC DETECTION LOGIC
NOTE:
If DTC P0456 is displayed with DTC P0442, first perform the trouble diagnosis for DTC P0456.
This diagnosis detects very small leakage in the EVAP line between fuel tank and EVAP canister purge vol-
ume control solenoid valve, using the negative pressure.
If ECM judges a leakage which corresponds to a very small leakage, the very small leakage P0456 will be
detected.
If ECM judges a leakage equivalent to a small leakage, EVAP small leakage P0442 will be detected.
If ECM judges that there are no leakage, the diagnosis will be OK.
CAUTION:
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0456
Evaporative emission
control system very
small leakage (negative
pressure check)
• EVAP system has a very small leak-
age.
• 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.
• Leakage 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 leakage
• EVAP purge line (pipe and rubber tube) leakage
• 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 leakage
• Fuel level sensor and the circuit
• Foreign matter caught in EVAP canister purge vol-
ume control solenoid valve
PBIB1026E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст