Nissan Sentra. Manual — part 400
EC-296
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Check the EVAP canister purge volume control solenoid valve. Refer to
EC-296, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace EVAP canister purge volume control solenoid valve. Refer to
8.
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 9.
NO
>> Clean the rubber tube using an air blower.
9.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check the EVAP canister vent control valve. Refer to
EC-303, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Replace EVAP canister vent control valve. Refer to
FL-15, "Removal and Installation"
.
10.
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 EVAP canister.
Does water drain from the EVAP canister?
YES
>> GO TO 11.
NO
>> Check intermittent incident. Refer to
11.
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
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> GO TO 12.
12.
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. Refer to
FL-15, "Removal and Installation"
.
Component Inspection
INFOID:0000000009758538
1.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4. Turn ignition switch ON.
5. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
PBIB1213E
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-297
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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 as per the follow-
ing 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 as per 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
PBIB0149E
Condition
Air passage continuity
between (A) and (B)
12 V direct current supply between
terminals 1 and 2
Existed
No supply
Not existed
EC-298
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
DTC Logic
INFOID:0000000009758539
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CONDITIONING
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.
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 let it idle for at least 13 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009758540
1.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check the voltage between EVAP canister purge volume control solenoid valve harness connector and
ground.
Is the inspection result normal?
YES
>> GO TO 3.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0444
PURG VOLUME CONT/V
(Evaporative emission system
purge control valve circuit open)
An excessively low voltage signal is sent to
ECM through the EVAP canister purge vol-
ume control solenoid valve.
• Harness or connectors
(EVAP canister purge volume control
solenoid valve circuit is open or short-
ed.)
• EVAP canister purge volume control
solenoid valve
P0445
PURG VOLUME CONT/V
(Evaporative emission system
purge control valve circuit short-
ed)
An excessively high voltage signal is sent
to ECM through the valve
• Harness or connectors
(EVAP canister purge volume control
solenoid valve circuit is shorted.)
• EVAP canister purge volume control
solenoid valve
+
−
Voltage
EVAP canister purge vol-
ume control solenoid valve
Connector
Terminal
F13
1
Ground
Battery voltage
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-299
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
NO
>> GO TO 2.
2.
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.
4. Also check harness for short to ground.
Is the inspection result normal?
YES-1 ( With CONSULT)>>GO TO 4.
YES-2 ( Without CONSULT)>>GO TO 5.
NO
>> Repair or replace error-detected parts.
3.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
ECM harness connector.
4. Also check harness for short to power.
Is the inspection result normal?
YES-1 ( With CONSULT)>>GO TO 4.
YES-2 ( Without CONSULT)>>GO TO 5.
NO
>> Repair or replace error-detected parts.
4.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT
1. Reconnect all harness connectors disconnected.
2. Start engine.
3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
4. Check that engine speed varies according to the valve opening.
Does engine speed vary according to the valve opening?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> GO TO 5.
5.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Check the EVAP canister purge volume control solenoid valve. Refer to
(EVAP Canister Purge Volume Control Solenoid Valve)"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> Replace EVAP canister purge volume control solenoid valve. Refer to
+
−
Continuity
EVAP canister purge vol-
ume control solenoid valve
IPDM E/R
Connector
Terminal
Connector
Terminal
F13
1
E45
25
Existed
+
−
Continuity
EVAP canister purge vol-
ume control solenoid valve
ECM
Connector
Terminal
Connector
Terminal
F13
2
F24
17
Existed
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