Infiniti QX56 (Z62). Manual — part 593
EC-350
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0456 EVAP CONTROL SYSTEM
NO
>> Replace EVAP control system pressure sensor. Refer to
EC-335, "Component Inspection (EVAP
Control System Pressure Sensor)"
16.
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Refer to
.
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> Repair or reconnect the hose.
17.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 18.
18.
CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper con-
nection. For location, refer to
.
Is the inspection result normal?
YES
>> GO TO 19.
NO
>> Repair or replace hoses and tubes.
19.
CHECK RECIRCULATION LINE
Check recirculation line between fuel filler tube and fuel tank for clogging, kink, cracks, looseness and
improper connection.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> Repair or replace hose, tube or fuel filler tube. Refer to
20.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-518, "Component Inspection (EVAP Vapor Cut Valve)"
Is the inspection result normal?
YES
>> GO TO 21.
NO
>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to
21.
CHECK FUEL LEVEL SENSOR
MWI-70, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 22.
NO
>> Replace fuel level sensor unit. Refer to
FL-5, "Removal and Installation"
.
22.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
Component Inspection (Fuel Filler Cap)
INFOID:0000000006288327
1.
CHECK FUEL FILLER CAP
1.
Turn ignition switch OFF.
2.
Remove fuel filler cap.
P0456 EVAP CONTROL SYSTEM
EC-351
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3.
Wipe clean valve housing.
4.
Install fuel filler cap adapter (commercial service tool) to fuel
filler cap.
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
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-352
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0460 FUEL LEVEL SENSOR
P0460 FUEL LEVEL SENSOR
DTC Logic
INFOID:0000000006288328
DTC DETECTION LOGIC
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
1.
PRECONDITIONING
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait maximum of 2 consecutive minutes.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006288329
1.
CHECK DTC WITH “COMBINATION METER”
MWI-30, "CONSULT-III Function"
.
Is any DTC detected?
YES
>> Perform trouble diagnosis of detected DTC.
NO
>> GO TO 2.
2.
CHECK FUEL LEVEL SENSOR SIGNAL CIRCUIT
Check fuel level sensor signal circuit. Refer to
MWI-69, "Component Function Check"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Perform trouble diagnosis of fuel level sensor signal circuit. Refer to
DTC No.
Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0460
FUEL LEV SEN SLOSH
(Fuel level sensor circuit
noise)
Even though the vehicle is parked, a
signal being 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
P0461 FUEL LEVEL SENSOR
EC-353
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0461 FUEL LEVEL SENSOR
DTC Logic
INFOID:0000000006288330
DTC DETECTION LOGIC
NOTE:
• If DTC P0461 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P0461 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
Driving long distances naturally affect fuel gauge level.
This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has
been driven.
DTC CONFIRMATION PROCEDURE
1.
PERFORM COMPONENT FUNCTION CHECK
Perform Component Function Check. Refer to
EC-353, "Component Function Check"
Use component function check to check the overall function of the fuel level sensor. During this check, a 1st
trip DTC might not be confirmed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Component Function Check
INFOID:0000000006288331
1.
PRECONDITIONING
WARNING:
When performing the following procedure, always observe the handling of the fuel. Refer to
TESTING CONDITION:
Before starting component function check, preparation of draining fuel and refilling fuel is required.
>> GO TO 2.
2.
PERFORM COMPONENT FUNCTION CHECK
NOTE:
Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8
Imp gal) in advance.
1.
Prepare a fuel container and a spare hose.
2.
Release fuel pressure from fuel line. Refer to
.
3.
Remove the fuel feed hose on the fuel level sensor unit. Refer to
FL-5, "Removal and Installation"
4.
Connect a spare fuel hose where the fuel feed hose was removed.
5.
Turn ignition switch ON.
6.
Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
7.
Confirm that the fuel gauge indication varies.
8.
Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
9.
Confirm that the fuel gauge indication varies.
Is the inspection result normal?
DTC No.
Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0461
FUEL LEVEL SENSOR
(Fuel level sensor circuit
range/performance)
The output signal of the fuel level sensor
does not change within the specified
range even though the vehicle has been
driven a long distance.
• Harness or connectors
(The CAN communication line is open or short-
ed)
• Harness or connectors
(The sensor circuit is open or shorted)
• Combination meter
• Fuel level sensor
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст