Infiniti M45 (Y34). Manual — part 424
DTC P0456 EVAP CONTROL SYSTEM
EC-385
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EC
14.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Stop engine.
3.
Disconnect vacuum hose to 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.
OK or NG
OK
>> GO TO 17.
NG
>> GO TO 15.
15.
CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to
.
OK or NG
OK
>> GO TO 16.
NG
>> Repair or reconnect the hose.
16.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to
EC-550, "Component Inspection"
OK or NG
OK
>> GO TO 17.
NG
>> Replace EVAP canister purge volume control solenoid valve.
17.
CHECK FUEL TANK TEMPERATURE SENSOR
Refer to
EC-291, "Component Inspection"
OK or NG
OK
>> GO TO 18.
NG
>> Replace fuel level sensor unit.
18.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to
EC-369, "Component Inspection"
OK or NG
OK
>> GO TO 19.
NG
>> Replace EVAP control system pressure sensor.
19.
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Refer to
EC-693, "EVAPORATIVE EMISSION LINE DRAWING"
.
OK or NG
OK
>> GO TO 20.
NG
>> Repair or reconnect the hose.
20.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 21.
EC-386
DTC P0456 EVAP CONTROL SYSTEM
21.
CHECK REFUELING EVAP VAPOR LINE
Check refueling EVAP vapor line between EVAP canister and fuel tank for clogging, kink, looseness and
improper connection. For location, refer to
EC-698, "ON BOARD REFUELING VAPOR RECOVERY (ORVR)"
.
OK or NG
OK
>> GO TO 22.
NG
>> Repair or replace hoses and tubes.
22.
CHECK SIGNAL LINE AND RECIRCULATION LINE
Check signal line and recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, loose-
ness and improper connection.
OK or NG
OK
>> GO TO 23.
NG
>> Repair or replace hose, tube or filler neck tube.
23.
CHECK REFUELING CONTROL VALVE
Refer to
EC-701, "Component Inspection"
OK or NG
OK
>> GO TO 24.
NG
>> Replace refueling EVAP vapor cut valve with fuel tank.
24.
CHECK FUEL LEVEL SENSOR
Refer to
DI-19, "CHECK FUEL LEVEL SENSOR UNIT"
OK or NG
OK
>> GO TO 25.
NG
>> Replace fuel level sensor unit.
25.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
ABS002L9
WATER SEPARATOR
1.
Check visually for insect nests in the water separator air inlet.
2.
Check visually for cracks or flaws in the appearance.
3.
Check visually for cracks or flaws in the hose.
4.
Check that A and C are not clogged by blowing air into B with
A , and then C plugged.
5.
In case of NG in items 2 - 4, replace the parts.
NOTE:
●
Do not disassemble water separator.
PBIB1032E
DTC P0460 FUEL LEVEL SENSOR
EC-387
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DTC P0460 FUEL LEVEL SENSOR
PFP:25060
Component Description
ABS002LA
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 ECM.
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
ABS002LB
When the vehicle is parked, naturally the fuel level in the fuel tank is 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
ABS002LC
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and wait maximum of 2 consecutive minutes.
4.
If 1st trip DTC is detected, go to
EC-389, "Diagnostic Procedure"
.
WITH GST
Follow the procedure WITH CONSULT-II above.
PBIB1241E
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
being varied is sent from the fuel level sensor
to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted)
●
Fuel level sensor
SEF195Y
EC-388
DTC P0460 FUEL LEVEL SENSOR
Wiring Diagram
ABS002LD
TBWA0293E
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