Infiniti M35/M45 Y50. Manual — part 668
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-1145
[VK45DE]
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DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
PFP:25085
Component Description
NBS005IB
The EVAP control system pressure sensor (3) detects pressure in
the purge line. The sensor output voltage to the ECM increases as
pressure increases.
●
Illustration shows the view from under the vehicle.
●
: Vehicle front
●
EVAP canister vent control valve (1)
●
EVAP canister (2)
CONSULT-II Reference Value in Data Monitor Mode
NBS005IC
Specification data are reference values.
On Board Diagnosis Logic
NBS005ID
NOTE:
If DTC P0453 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-1193, "DTC P0643 SENSOR POWER SUPPLY"
.
PBIB2702E
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
0453
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
●
Rubber hose from EVAP canister vent
control valve to vehicle frame
EC-1146
[VK45DE]
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
DTC Confirmation Procedure
NBS005IE
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:
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.
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 107 (Fuel tank tem-
perature 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 Service $07 with GST.
If 1st trip DTC is detected, go to
.
SEF194Y
PBIB1110E
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-1147
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Wiring Diagram
NBS005IF
TBWT1495E
EC-1148
[VK45DE]
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
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
NBS005IG
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten ground screws on the body.
Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK CONNECTOR
1.
Disconnect EVAP control system pressure sensor (3) harness
connector.
–
Illustration shows the view from under the vehicle.
–
: Vehicle front
–
EVAP canister vent control valve (1)
–
EVAP canister (2)
2.
Check sensor harness connector for water.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness connector.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
32
R/G
EVAP control system pres-
sure sensor
[Ignition switch: ON]
Approximately 1.8 - 4.8V
48
BR
Sensor power supply
(EVAP control system pres-
sure sensor)
[Ignition switch: ON]
Approximately 5V
67
B/W
Sensor ground
(EVAP control system pres-
sure sensor)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
1.
Body ground M70
2.
Body ground M16
PBIB2782E
Water should not exist.
PBIB2702E
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