Nissan Frontier D22. Instruction — part 307
DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-331
[KA24DE]
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EC
5.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-II
1.
Start engine.
2.
Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that engine speed varies according to the
valve opening.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-II
Check air passage continuity of EVAP canister purge volume control solenoid valve under the following condi-
tions.
Without CONSULT-II
Check air passage continuity of EVAP canister purge volume control solenoid valve under the following condi-
tions.
OK or NG
OK
>> GO TO 7.
NG
>> Replace EVAP canister purge volume control solenoid valve.
7.
CHECK INTERMITTENT INCIDENT
Refer to
EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
SEF801Y
SEF334X
SEF335X
EC-332
[KA24DE]
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
PFP:14935
Component Description
UBS00D7M
The EVAP canister vent control valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid (the EVAP canister vent control valve) responds to sig-
nals 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 (Small Leak)” diagnosis.
CONSULT-II Reference Value in Data Monitor Mode
UBS00D7N
Specification data are reference values.
On Board Diagnosis Logic
UBS00D7O
DTC Confirmation Procedure
UBS00D7P
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 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 5 seconds.
4.
If 1st trip DTC is detected, go to
EC-334, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II”.
SEF378Q
MONITOR ITEM
CONDITION
SPECIFICATION
VENT CONT/V
●
Ignition switch: ON
OFF
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0447
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
SEF058Y
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-333
[KA24DE]
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A
EC
Wiring Diagram
UBS00D7Q
BBWA1062E
EC-334
[KA24DE]
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
UBS00D7R
1.
INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes
>> GO TO 2.
No
>> GO TO 3.
2.
CHECK CIRCUIT
1.
Turn ignition switch ON.
2.
Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
3.
Make sure that ratcheting sound is heard from the vent control
valve.
OK or NG
OK
>> GO TO 7.
NG >> GO
TO
3.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
108
R/G
EVAP canister vent control
valve
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
SEF802Y
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