Infiniti FX35 / FX45. Manual — part 403
DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-373
< SERVICE INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Diagnosis Procedure
INFOID:0000000001326203
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten ground screw on the body. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK EVPA CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
1.
Disconnect EVAP control system pressure sensor harness connector.
2.
Check sensor harness connector for water.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness connector.
3.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-373, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> Replace EVAP control system pressure sensor.
4.
CHECK INTERMITTENT INCIDENT
For Wiring Diagram, refer to
.
>> INSPECTION END
Component Inspection
INFOID:0000000001326204
EVAP CONTROL SYSTEM PRESSURE SENSOR
1.
Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.
Always replace O-ring with a new one.
2.
Install a vacuum pump to EVAP control system pressure sensor.
PBIB2625E
Water should not exist.
PBIB1611E
EC-374
< SERVICE INFORMATION >
[VQ35DE]
DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
3.
Turn ignition switch ON and check output voltage between ECM
terminal 32 and ground under the following conditions.
CAUTION:
• Always calibrate the vacuum pump gauge when using it.
• Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or
pressure over 101.3 kPa (760 mmHg, 29.92 inHg).
4.
If NG, replace EVAP control system pressure sensor.
Applied vacuum kPa
(mmHg, inHg)
Voltage V
Not applied
1.8 - 4.8
-26.7 (-200, -7.87)
2.1 to 2.5V lower than above value
PBIB1173E
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-375
< SERVICE INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Component Description
INFOID:0000000001326205
The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the
ECM increases as pressure increases.
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001326206
Specification data are reference values.
On Board Diagnosis Logic
INFOID:0000000001326207
NOTE:
If DTC P0452 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to
.
DTC Confirmation Procedure
INFOID:0000000001326208
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-III
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
PBIB1611E
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
P0452
0452
EVAP control system
pressure sensor low in-
put
An excessively low voltage from the sensor is
sent to ECM.
• Harness or connectors
(EVAP control system pressure sensor
circuit is open or shorted.)
• EVAP control system pressure sensor
EC-376
< SERVICE INFORMATION >
[VQ35DE]
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
3.
Turn ignition switch ON.
4.
Select “DATA MONITOR” mode with CONSULT-III.
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.
Check 1st trip DTC.
8.
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
.
PBIB1110E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст