Nissan Frontier D22. Manual — part 605
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-1523
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors C1, M67
●
Harness connectors M81, F36
●
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 EVAP CANISTER VENT CONTROL VALVE
With CONSULT-II
1.
Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
2.
Check air passage continuity and operation delay time.
Operation takes less than 1second.
Without CONSULT-II
1.
Check air passage continuity and operation delay time under the
following condition.
Operation takes less than 1 second.
If NG or operation takes more than 1 second, clean valve using air
blower or replace as necessary.
If portion B is rusted, replace control valve.
Make sure new O-ring is installed properly.
OK or NG
OK >> GO
TO
8.
NG
>> Replace EVAP canister vent control valve.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-1297, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Condition VENT CONTROL/V
Air passage continuity between
A and B
ON
No
OFF
Yes
SEF013Z
Condition
Air passage continuity between A
and B
12V direct current supply
between terminals 1 and 2
No
OFF
Yes
BBIA0309E
EC-1524
[VG33ER]
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
PFP:25085
Component Description
UBS00DXZ
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pres-
sure increases. The EVAP control system pressure sensor is not
used to control the engine system. It is used only for on board diag-
nosis.
CONSULT-II Reference Value in Data Monitor Mode
UBS00DY0
Specification data are reference values.
On Board Diagnosis Logic
UBS00DY1
DTC Confirmation Procedure
UBS00DY2
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:
Always perform test at a temperature of 5
°C (41°F) or more.
WITH CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 5 seconds.
3.
Turn ignition switch ON.
SEF340V
PBIB1207E
MONITOR ITEM
CONDITION
SPECIFICATION
EVAP SYS PRES
●
Ignition switch: ON
1.8 - 4.8V
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0452
EVAP control system
pressure sensor low
input
An excessively low voltage from the sensor is
sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted.)
●
EVAP control system pressure sensor
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-1525
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
4.
Select “DATA MONITOR” mode with CONSULT-II.
5.
Make sure that “FUEL T/TMP SE” is more than 0
°C (32°F).
6.
Start engine and wait at least 20 seconds.
7.
If 1st trip DTC is detected, go to
WITH GST
1.
Start engine and warm it up to normal operating temperature.
2.
Check that voltage between ECM terminal 60 (Fuel tank temperature sensor signal) and ground is less
than 4.2V.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Start engine and wait at least 20 seconds.
5.
Select MODE 7 with GST.
If 1st trip DTC is detected, go to
EC-1527, "Diagnostic Procedure"
.
SEF194Y
EC-1526
[VG33ER]
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Wiring Diagram
UBS00DY3
BBWA1087E
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