Nissan Frontier D22. Manual — part 459
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-939
[VG33E]
C
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EC
8.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminal 62 and EVAP control system pressure sensor terminal
2.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 9.
9.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors C3, B113 and B101, M67
●
Harness connectors M59, F27
●
Harness for open or short between ECM and EVAP control system pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
1.
Remove EVAP control system pressure sensor with its harness connector connected.
2.
Remove hose from EVAP control system pressure sensor.
3.
Turn ignition switch ON.
4.
Use pump to apply vacuum and pressure to EVAP control system pressure sensor as shown in figure.
5.
Check input voltage between ECM terminal 62 and ground.
CAUTION:
●
Always calibrate the vacuum pump gauge when using it.
●
Do not apply below
−93.3 kPa (−700 mmHg, −27.56 inHg) or
over 101.3 kPa (760 mmHg, 29.92 inHg) of pressure.
OK or NG
OK
>> GO TO 14.
NG
>> Replace EVAP control system pressure sensor.
11.
CHECK INTERMITTENT INCIDENT
Refer to
EC-696, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Continuity should exist.
Applied vacuum
Voltage V
Not applied
1.8 - 4.8
−26.7 kpa (−200 mmHg, −7.87 inHg)
2.1 to 2.5 V lower than above value
PBIB1426E
EC-940
[VG33E]
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
PFP:25085
Component Description
UBS00DLE
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
UBS00DLF
Specification data are reference values.
On Board Diagnosis Logic
UBS00DLG
DTC Confirmation Procedure
UBS00DLH
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 10 seconds.
3.
Turn ignition switch ON.
SEF340V
PBIB1207E
MONITOR ITEM
CONDITION
SPECIFICATION
EVAP SYS PRES
●
Ignition switch: ON
Approx. 1.8 - 4.8V
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0453
EVAP control system
pressure sensor high
input
An excessively high voltage from the sensor is
sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted.)
●
EVAP control system pressure sensor
●
EVAP canister vent control valve
●
EVAP canister
●
Water separator
●
Rubber hose from EVAP canister vent
control valve to water separator
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-941
[VG33E]
C
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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
EC-943, "Diagnostic Procedure"
.
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-943, "Diagnostic Procedure"
.
SEF194Y
EC-942
[VG33E]
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Wiring Diagram
UBS00DLI
BBWA1087E
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