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![INFINITI FX35 2006 Service Manual DTC P0448 EVAP CANISTER VENT CONTROL VALVE EC-1089
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4. CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP INFINITI FX35 2006 Service Manual DTC P0448 EVAP CANISTER VENT CONTROL VALVE EC-1089
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4. CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP](/manual-img/42/57019/w960_57019-2472.png)
DTC P0448 EVAP CANISTER VENT CONTROL VALVE EC-1089
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4. CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
EVAP canister for damage
EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
>> Repair hose or replace EVAP canister.
6. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check connectors for water.
OK or NG
OK >> GO TO 7.
NG >> Replace EVAP control system pressure sensor.
7. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-1099, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace EVAP control system pressure sensor.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-811, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component InspectionNBS004DS
EVAP CANISTER VENT CONTROL VALVE
With CONSULT-II
1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portion B of EVAP canister vent control valve for being
rusted.
If NG, replace EVAP canister vent control valve.
If OK, go to next step.
3. Reconnect harness connectors disconnected.
4. Turn ignition switch ON. Water should not exist.
PBIB1033E
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![INFINITI FX35 2006 Service Manual EC-1090
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DTC P0448 EVAP CANISTER VENT CONTROL VALVE
Revision: 2006 December 2006 FX35/FX45
5. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
6. Check air passage continuity and opera INFINITI FX35 2006 Service Manual EC-1090
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DTC P0448 EVAP CANISTER VENT CONTROL VALVE
Revision: 2006 December 2006 FX35/FX45
5. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
6. Check air passage continuity and opera](/manual-img/42/57019/w960_57019-2473.png)
EC-1090
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DTC P0448 EVAP CANISTER VENT CONTROL VALVE
Revision: 2006 December 2006 FX35/FX45
5. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
6. Check air passage continuity and operation delay time. Make sure that new O-ring is installed properly.
Operation takes less than 1 second.
If NG, replace EVAP canister vent control valve.
If OK, go to next step.
7. Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower.
8. Perform step 6 again.
Without CONSULT-II
1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portion B of EVAP canister vent control valve for being
rusted.
3. Check air passage continuity and operation delay time under the following conditions.
Make sure that new O-ring is installed properly.
Operation takes less than 1 second.
If NG, replace EVAP canister vent control valve.
If OK, go to next step.
4. Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower.
5. Perform step 3 again.
Condition VENT CONTROL/V Air passage continuity between A and B
ON No
OFF Yes
PBIB1679E
PBIB1033E
Condition Air passage continuity between A and B
12V direct current supply between
terminals 1 and 2 No
OFF Yes
PBIB1034E
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![INFINITI FX35 2006 Service Manual DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1091
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DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSORPFP:22365
Comp INFINITI FX35 2006 Service Manual DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1091
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DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSORPFP:22365
Comp](/manual-img/42/57019/w960_57019-2474.png)
DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1091
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DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSORPFP:22365
Component DescriptionNBS0048D
The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the
ECM increases as pressure increases.
CONSULT-II Reference Value in Data Monitor ModeNBS0048E
Specification data are reference values.
On Board Diagnosis LogicNBS0048F
NOTE:
If DTC P0451 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-1149, "
DTC P0643 SENSOR POWER SUPPLY" .
PBIB1522E
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
P0451
0451 EVAP control system
pressure sensor perfor-
mance ECM detects a sloshing signal from the EVAP
control system pressure sensor
Harness or connectors
EVAP control system pressure sensor
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EC-1092
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DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
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DTC Confirmation ProcedureNBS0048G
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.
WITH CONSULT-II
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and wait at least 40 seconds.
NOTE:
Do not depress accelerator pedal even slightly.
If 1st trip DTC is detected, go to EC-1092, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureNBS0048H
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. Refer to EC-818, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
SEF194Y
PBIB2195E
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2. CHECK EVPA CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR INFINITI FX35 2006 Service Manual DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1093
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2. CHECK EVPA CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR](/manual-img/42/57019/w960_57019-2476.png)
DTC P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1093
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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
Refer to EC-1093, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace EVAP control system pressure sensor.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-811, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For Wiring Diagram, refer to EC-1096
.
>> INSPECTION END
Component InspectionNBS0048I
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.
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. Water should not exist.
PBIB1522E
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
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![INFINITI FX35 2006 Service Manual EC-1094
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DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSORPFP:25085
Component DescriptionNBS0048J
The EVAP cont INFINITI FX35 2006 Service Manual EC-1094
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DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSORPFP:25085
Component DescriptionNBS0048J
The EVAP cont](/manual-img/42/57019/w960_57019-2477.png)
EC-1094
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DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSORPFP:25085
Component DescriptionNBS0048J
The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the
ECM increases as pressure increases.
CONSULT-II Reference Value in Data Monitor ModeNBS0048K
Specification data are reference values.
On Board Diagnosis LogicNBS0048L
NOTE:
If DTC P0452 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-1149, "
DTC P0643 SENSOR POWER SUPPLY" .
PBIB1522E
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
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
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![INFINITI FX35 2006 Service Manual DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1095
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DTC Confirmation ProcedureNBS0048M
NOTE:
If DTC Confirmati INFINITI FX35 2006 Service Manual DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1095
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DTC Confirmation ProcedureNBS0048M
NOTE:
If DTC Confirmati](/manual-img/42/57019/w960_57019-2478.png)
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR EC-1095
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DTC Confirmation ProcedureNBS0048M
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. If 1st trip DTC is detected, go to EC-1097, "
Diagnostic Proce-
dure" .
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 EC-1097, "
Diagnostic Proce-
dure" .
SEF194Y
PBIB1110E
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EC-1096
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DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
Wiring DiagramNBS0048N
TBWM1340E