Nissan Xterra. Instruction — part 304
EC-342
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P0456 EVAP CONTROL SYSTEM
NG
>> Repair or reconnect the hose.
15.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-306, "Component Inspection"
OK or NG
OK
>> GO TO 16.
NG
>> Replace EVAP canister purge volume control solenoid valve. Refer to
16.
CHECK FUEL TANK TEMPERATURE SENSOR
EC-250, "Component Inspection"
OK or NG
OK
>> GO TO 17.
NG
>> Replace fuel level sensor unit. Refer to
FL-11, "Removal and Installation"
17.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-323, "Component Inspection"
OK or NG
OK
>> GO TO 18.
NG
>> Replace EVAP control system pressure sensor. Refer to
FL-16, "Removal and Installation"
.
18.
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
.
OK or NG
OK
>> GO TO 19.
NG
>> Repair or reconnect the hose.
19.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 20.
20.
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
.
OK or NG
OK
>> GO TO 21.
NG
>> Repair or replace hoses and tubes.
21.
CHECK RECIRCULATION LINE
Check recirculation line between filler neck tube and fuel tank for clogging, kinks, cracks, looseness and
improper connection.
OK or NG
OK
>> GO TO 22.
NG
>> Repair or replace hose, tube or filler neck tube. Refer to
FL-6, "Removal and Installation"
22.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-478, "Component Inspection"
OK or NG
OK
>> GO TO 23.
NG
>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to
FL-6, "Removal and Installation"
.
23.
CHECK FUEL LEVEL SENSOR
MWI-34, "Component Inspection"
.
OK or NG
OK
>> GO TO 24.
NG
>> Replace fuel level sensor unit. Refer to
P0456 EVAP CONTROL SYSTEM
EC-343
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
24.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000009484043
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)
1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
3. If out of specification, replace fuel filler cap as an assembly.
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incor-
rect fuel filler cap is used, the MIL may come on.
SEF445Y
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-344
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
P0460 FUEL LEVEL SENSOR
P0460 FUEL LEVEL SENSOR
Component Description
INFOID:0000000009484044
The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the combination meter. The combination meter sends the fuel level
sensor signal to the ECM through the CAN communication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
On Board Diagnosis Logic
INFOID:0000000009484045
NOTE:
• If DTC P0460 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P0460 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
When the vehicle is parked, the fuel level in the fuel tank is naturally stable. It means that output signal of the
fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunc-
tion is detected.
DTC Confirmation Procedure
INFOID:0000000009484046
1. If DTC Confirmation Procedure has been previously conducted, always perform the following before con-
ducting the next step.
a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c.
Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and wait maximum of 2 consecutive minutes.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000009484047
1.
CHECK COMBINATION METER FUNCTION
.
OK or NG
OK
>> GO TO 2.
NG
>> Go to
MWI-36, "Component Function Check"
.
2.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
BBIA0529E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0460
0460
Fuel level sensor circuit
noise
Even though the vehicle is parked, a signal be-
ing varied is sent from the fuel level sensor to
ECM.
• Harness or connectors
(The CAN communication line is open or
shorted)
• Harness or connectors
(The sensor circuit is open or shorted)
• Combination meter
• Fuel level sensor
P0460 FUEL LEVEL SENSOR
EC-345
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> INSPECTION END
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст