Infiniti F50. Manual — part 427
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-349
C
D
E
F
G
H
I
J
K
L
M
A
EC
3.
CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect EVAP canister vent control valve harness connector.
3.
Turn ignition switch “ON”.
4.
Check voltage between EVAP canister vent control valve termi-
nal 1 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E224, B204
●
Harness connectors B251, B401
●
Fuse, fusible link and relay block (J/B) connector E3
●
10A fuse
●
Harness for open or short between EVAP canister vent control valve and fuse
>> Repair harness or connectors.
5.
CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 158 and EVAP canister vent control valve terminal 2.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
Voltage: Battery voltage
PBIB0026E
PBIB0152E
Continuity should exist.
EC-350
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors F105, M135
●
Harness connectors M141, B211
●
Harness connectors B251, B401
●
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 RUBBER TUBE FOR CLOGGING
1.
Disconnect rubber tube connected to EVAP canister vent control valve.
2.
Check the rubber tube for clogging.
OK or NG
OK
>> GO TO 8.
NG
>> Clean the rubber tube using an air blower.
8.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to
EC-350, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace EVAP canister vent control valve.
9.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00MEW
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”.
SEF337X
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
EC-351
C
D
E
F
G
H
I
J
K
L
M
A
EC
5.
Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
6.
Check air passage continuity and operation delay time.
Make sure 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 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
PBIB0153E
SEF337X
Condition
Air passage continuity between A and B
12V direct current supply between
terminals 1 and 2
No
OFF
Yes
PBIB0154E
EC-352
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
PFP:25085
Component Description
EBS00MEX
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 Mode
EBS00MEY
Specification data are reference values.
On Board Diagnosis Logic
EBS00MEZ
PBIB0026E
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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