Infiniti FX35 / FX45. Manual — part 400
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-361
< SERVICE INFORMATION >
[VQ35DE]
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DTC P0447 EVAP CANISTER VENT CONTROL VALVE
Component Description
INFOID:0000000001326185
The EVAP canister vent control valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows EVAP
Control System diagnosis.
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001326186
Specification data are reference values.
On Board Diagnosis Logic
INFOID:0000000001326187
DTC Confirmation Procedure
INFOID:0000000001326188
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.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11V at idle.
1.
Start engine and wait at least 8 seconds.
2.
Check 1st trip DTC.
3.
If 1st trip DTC is detected, go to
PBIB1263E
PBIB1611E
MONITOR ITEM
CONDITION
SPECIFICATION
VENT CONT/V
• Ignition switch: ON
OFF
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0447
0447
EVAP canister vent con-
trol valve circuit open
An improper voltage signal is sent to ECM
through EVAP canister vent control valve.
• Harness or connectors
(EVAP canister vent control valve circuit
is open or shorted.)
• EVAP canister vent control valve
EC-362
< SERVICE INFORMATION >
[VQ35DE]
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
Wiring Diagram
INFOID:0000000001326189
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TBWM1391E
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-363
< SERVICE INFORMATION >
[VQ35DE]
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M
A
EC
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P
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Diagnosis Procedure
INFOID:0000000001326190
1.
INSPECTION START
Do you have CONSULT-III?
Yes or No
Yes
>> GO TO 2.
No
>> GO TO 3.
2.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-III
1.
Turn ignition switch OFF and then turn ON.
2.
Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-III.
3.
Touch “ON/OFF” on CONSULT-III screen.
4.
Check for operating sound of the valve.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 3.
3.
CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister vent control valve harness connector.
3.
Turn ignition switch ON.
4.
Check voltage between EVAP canister vent control valve termi-
nal 1 and ground with CONSULT-III or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E211, M41
• Harness connectors M11, B1
TER-
MI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
117
R/Y
EVAP canister vent control
valve
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
Clicking noise should be heard.
Voltage: Battery voltage
PBIB1611E
PBIB0152E
EC-364
< SERVICE INFORMATION >
[VQ35DE]
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
• Harness connectors B84, B216
• Harness for open or short between EVAP canister vent control valve and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 117 and EVAP canister vent control valve terminal 2.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors M11, B1
• Harness connectors B84, B216
• Harness for open or short between EVAP canister vent control valve and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK RUBBER TUBE FOR CLOGGING
1.
Disconnect rubber tube connected to EVAP canister vent control valve.
2.
Check the rubber tube for clogging.
OK or NG
OK
>> GO TO 8.
NG
>> Clean the rubber tube using an air blower.
8.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-364, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace EVAP canister vent control valve.
9.
CHECK INTERMITTENT INCIDENT
>> INSPECTION END
Component Inspection
INFOID:0000000001326191
EVAP CANISTER VENT CONTROL VALVE
With CONSULT-III
1.
Remove EVAP canister vent control valve from EVAP canister.
Continuity should exist.
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