Nissan Quest E52. Instruction — part 521
EC-294
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
6.
Touch “Qd” and “Qu” on CONSULT screen to adjust “PURG
VOL C/V” opening and check air passage continuity of EVAP
canister purge volume control solenoid valve under the following
conditions.
Without CONSULT
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister purge volume control solenoid valve harness connector.
3.
Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4.
Check air passage continuity of EVAP canister purge volume
control solenoid valve under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace EVAP canister purge volume control solenoid
valve. Refer to
.
Condition
(PURG VOL C/V value)
Air passage continuity
between (A) and (B)
100%
Existed
0%
Not existed
PBIB2058E
Condition
Air passage continuity
between (A) and (B)
12 V direct current supply between
terminals 1 and 2
Existed
No supply
Not existed
PBIB2059E
P0447 EVAP CANISTER VENT CONTROL VALVE
EC-295
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P0447 EVAP CANISTER VENT CONTROL VALVE
DTC Logic
INFOID:0000000009651131
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing 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.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait at least 8 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651132
1.
INSPECTION START
Will CONSULT be used?
Will CONSULT be used?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT
1.
Turn ignition switch OFF and then ON.
2.
Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT.
3.
Touch “ON/OFF” on CONSULT screen.
4.
Check for operating sound of the valve.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 3.
3.
CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister vent control valve harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0447
EVAP canister vent con-
trol valve circuit open
An improper voltage signal is sent to ECM
through EVAP canister vent control valve.
• Harness or connectors
(The valve circuit is open or shorted.)
• EVAP canister vent control valve
• Hoses
(Hoses are connected incorrectly or
clogged.)
Clicking sound should be heard.
EC-296
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0447 EVAP CANISTER VENT CONTROL VALVE
3.
Turn ignition switch ON.
4.
Check the voltage between EVAP canister vent control valve harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R harness connector.
3.
Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
IPDM E/R harness connector.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
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 the continuity between ECM harness connector and EVAP canister vent control valve harness con-
nector.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
6.
CHECK RUBBER TUBE FOR CLOGGING
1.
Disconnect rubber tube connected to EVAP canister vent control valve.
2.
Check the rubber tube for clogging.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Clean the rubber tube using an air blower.
7.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check EVAP canister vent control valve. Refer to
EC-297, "Component Inspection"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace EVAP canister vent control valve. Refer to
.
EVAP canister vent control valve
Ground
Voltage
Connector
Terminal
B66
1
Ground
Battery voltage
EVAP canister vent control
valve
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
B66
1
F12
53
Existed
EVAP canister vent control valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
B66
2
E16
106
Existed
P0447 EVAP CANISTER VENT CONTROL VALVE
EC-297
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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Component Inspection
INFOID:0000000009651133
1.
CHECK EVAP CANISTER VENT CONTROL VALVE-I
1.
Remove EVAP canister vent control valve from EVAP canister. Refer to
.
2.
Check portion (A) of EVAP canister vent control valve for rust.
Is it rusted?
YES
>> Replace EVAP canister vent control valve. Refer to
.
NO
>> GO TO 2.
2.
CHECK EVAP CANISTER VENT CONTROL VALVE-II
With CONSULT
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
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.
Operation takes less than 1 second.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 3.
3.
CHECK EVAP CANISTER VENT CONTROL VALVE-III
With CONSULT
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.
JMBIA0168ZZ
Condition VENT CONTROL/V
Air passage continuity between (A) and (B)
ON
Not existed
OFF
Existed
Condition
Air passage continuity between (A) and (B)
12 V direct current supply between
terminals 1 and 2
Not existed
OFF
Existed
JMBIA0169ZZ
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