Infiniti FX35, FX50 (S51). Manual — part 842
P0447 EVAP CANISTER VENT CONTROL VALVE
EC-909
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
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Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Clean the rubber tube using an air blower.
8.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-909, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace EVAP canister vent control valve.
9.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000005237379
1.
CHECK EVAP CANISTER VENT CONTROL VALVE-I
1.
Turn ignition switch OFF.
2.
Remove EVAP canister vent control valve from EVAP canister.
3.
Check portion (A) of EVAP canister vent control valve for rust.
Is it rusted?
YES
>> Replace EVAP canister vent control valve
NO
>> GO TO 2.
2.
CHECK EVAP CANISTER VENT CONTROL VALVE-II
With CONSULT-III
1.
Reconnect harness connectors disconnected.
2.
Turn ignition switch ON.
3.
Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
4.
Check air passage continuity and operation delay time.
Check that new O-ring is installed properly.
Operation takes less than 1 second.
Without CONSULT-III
1.
Disconnect EVAP canister vent control valve harness connector.
2.
Check air passage continuity and operation delay time under the following conditions.
Check that new O-ring is installed properly.
JMBIA0168ZZ
VENT CONTROL/V Condition
Air passage continuity between (A) and (B)
ON
Not existed
OFF
Existed
JMBIA0169ZZ
EC-910
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P0447 EVAP CANISTER VENT CONTROL VALVE
Operation takes less than 1 second.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace EVAP canister vent control valve
3.
CHECK EVAP CANISTER VENT CONTROL VALVE-III
With CONSULT-III
1.
Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.
2.
Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
3.
Check air passage continuity and operation delay time.
Check that new O-ring is installed properly.
Operation takes less than 1 second.
Without CONSULT-III
1.
Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.
2.
Check air passage continuity and operation delay time under the following conditions.
Check that new O-ring is installed properly.
Operation takes less than 1 second.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace EVAP canister vent control valve
Condition
Air passage continuity between (A) and (B)
12 V direct current supply between
terminals 1 and 2
Not existed
OFF
Existed
VENT CONTROL/V Condition
Air passage continuity between (A) and (B)
ON
Not existed
OFF
Existed
JMBIA0169ZZ
Condition
Air passage continuity between (A) and (B)
12 V direct current supply between
terminals 1 and 2
Not existed
OFF
Existed
P0448 EVAP CANISTER VENT CONTROL VALVE
EC-911
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
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P0448 EVAP CANISTER VENT CONTROL VALVE
Description
INFOID:0000000005237380
The EVAP canister vent control valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows “EVAP
Control System” diagnosis.
DTC Logic
INFOID:0000000005237381
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 5 seconds.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Start engine and let it idle for at least 1 minute.
4.
Repeat next procedures 3 times.
-
Increase the engine speed up to between 3,000 and 3,500 rpm and maintain that speed for 2 minutes and
50 seconds to 3 minutes.
Do not exceed 3 minutes.
-
Fully released accelerator pedal and keep engine idle for approximately 5 seconds.
5.
Repeat next procedure 20 times.
-
Quickly increase the engine speed up to between 4,000 and 4,500 rpm and maintain that speed for 25 to
30 seconds.
PBIB1263E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0448
EVAP canister vent control
valve close
EVAP canister vent control valve remains
closed under specified driving conditions.
• EVAP canister vent control valve
• EVAP control system pressure sensor
and the circuit
• Blocked rubber tube to EVAP canister
vent control valve
• EVAP canister is saturated with water
EC-912
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P0448 EVAP CANISTER VENT CONTROL VALVE
-
Fully released accelerator pedal and keep engine idle for at least 35 seconds.
6.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005237382
1.
CHECK RUBBER TUBE
1.
Turn ignition switch OFF.
2.
Disconnect rubber tube connected to EVAP canister vent control valve.
3.
Check the rubber tube for clogging.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Clean rubber tube using an air blower.
2.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-913, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace EVAP canister vent control valve.
3.
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
1.
Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2.
Check if water will drain from the EVAP canister (1).
-
EVAP canister vent control valve (2)
Does water drain from EVAP canister?
YES
>> GO TO 4.
NO
>> GO TO 6.
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).
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• EVAP canister for damage
JMBIA1516GB
PBIB2731E
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