Infiniti FX35, FX50 (S51). Manual — part 688
P0442 EVAP CONTROL SYSTEM
EC-293
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
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A
EC
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P
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Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Repair or reconnect the hose.
13.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-299, "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
EC-245, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace “fuel level sensor unit and fuel pump”.
15.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-313, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Replace 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, kinks, looseness and improper
connection. 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 filler neck tube and fuel tank for clogging, kinks, cracks, looseness and
improper connection.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> Repair or replace hose, tube or filler neck tube.
20.
CHECK REFUELING EVAP VAPOR CUT VALVE
EC-490, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 21.
NO
>> Replace refueling EVAP vapor cut valve with fuel tank.
21.
CHECK FUEL LEVEL SENSOR
MWI-62, "Component Inspection"
.
Is the inspection result normal?
EC-294
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0442 EVAP CONTROL SYSTEM
YES
>> GO TO 22.
NO
>> Replace “fuel level sensor unit and fuel pump (main)”.
22.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000005236881
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.
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
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-295
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
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EC
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P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Description
INFOID:0000000005236882
The EVAP canister purge volume control solenoid valve is used to
control the flow rate of fuel vapor from the EVAP canister. The EVAP
canister purge volume control solenoid valve is moved by ON/OFF
pulses from the ECM. The longer the ON pulse, the greater the
amount of fuel vapor that will flow through the valve.
DTC Logic
INFOID:0000000005525067
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
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.
TESTING CONDITION:
• Perform “DTC CONFIRMATION PROCEDURE” when the fuel level is between 1/4 and 3/4 full, and
vehicle is placed on flat level surface.
• Always perform test at a temperature of 5 to 60
°
C (41 to 140
°
F).
• Cool the vehicle so that engine coolant temperature becomes same level as ambient temperature.
Do you have CONSULT-III
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
PERFORM DTC CONFIRMATION PROCEDURE A
With CONSULT-III
1.
Turn ignition switch ON.
2.
Check that the following condition are met.
FUEL T/TMP SE: 0 - 35
°
C (32 - 95
°
F)
3.
Start engine and wait at least 60 seconds.
4.
Check 1st trip DTC.
IS 1st trip DTC detected?
OK
>> Go to
NG
>> GO TO 3.
JMBIA0069ZZ
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0443
EVAP canister purge
volume control solenoid
valve
A
The canister purge flow is detected dur-
ing the vehicle is stopped while the en-
gine is running, even when EVAP
canister purge volume control solenoid
valve is completely closed.
• EVAP control system pressure sensor
• EVAP canister purge volume control so-
lenoid valve
(The valve is stuck open.)
• EVAP canister vent control valve
• EVAP canister
• Hoses
(Hoses are connected incorrectly or
clogged.)
B
The canister purge flow is detected dur-
ing the specified driving conditions, even
when EVAP canister purge volume con-
trol solenoid valve is completely closed.
EC-296
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
3.
PERFORM DTC CONFIRMATION PROCEDURE B
With CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Turn ignition switch ON.
6.
Select “PURG VOL CN/V P1444” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with
CONSULT-III.
7.
Touch “START”.
8.
Start engine and let it idle until “TESTING” on CONSULT-III changes to “COMPLETED”. (It will take
approximately 10 seconds.)
If “TESTING” is not displayed after 5 minutes, retry from step 2.
9.
Touch “SELF-DIAG RESULTS”.
Which is displayed on CONSULT-III screen?
OK
>> INSPECTION END
NG
>> Go to
4.
PERFORM DTC CONFIRMATION PROCEDURE A
With GST
1.
Turn ignition switch ON.
2.
Set voltmeter probes to ECM harness connector terminals.
3.
Start engine and wait at least 60 seconds.
4.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> GO TO 5.
5.
PERFORM DTC CONFIRMATION PROCEDURE B
With GST
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Start engine and let it idle for at least 20 seconds.
6.
Check 1st trip DTC.
Is 1st trip DTC displayed?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005236884
1.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister purge volume control solenoid valve harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between EVAP canister purge volume control solenoid valve harness connector and
ground.
ECM
Voltage (V)
Connector
+
–
Terminal
Terminal
M107
106
(Fuel tank temperature sensor signal)
128
(Sensor ground)
3.1 - 4.0
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