Infiniti F50. Manual — part 426
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-345
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DTC P0447 EVAP CANISTER VENT CONTROL VALVE
PFP:14935
Component Description
EBS00MEQ
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-II Reference Value in Data Monitor Mode
EBS00MER
Specification data are reference values.
On Board Diagnosis Logic
EBS00MES
SEF032W
PBIB0026E
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
(The valve circuit is open or shorted.)
●
EVAP canister vent control valve
EC-346
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
DTC Confirmation Procedure
EBS00MET
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.
WITH CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and wait at least 8 seconds.
4.
If 1st trip DTC is detected, go to
EC-348, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-347
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Wiring Diagram
EBS00MEU
TBWM0131E
EC-348
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
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.
Diagnostic Procedure
EBS00MEV
1.
INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes
>> GO TO 2.
No
>> GO TO 3.
2.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-II
1.
Turn ignition switch “OFF” and then turn “ON”.
2.
Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-II.
3.
Touch “ON/OFF” on CONSULT-II screen.
4.
Check for operating sound of the valve.
Clicking noise should be heard.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 3.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
158
L/Y
EVAP canister vent control
valve
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
PBIB0151E
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