NISSAN LATIO 2009 Service Repair Manual

P0443 EVAP CANISTER PURGE VOLU
ME CONTROL SOLENOID VALVE
EC-295
< COMPONENT DIAGNOSIS >
[HR16DE] C
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2. Reconnect harness connectors disconnected.
3. Start engine.
4. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT- III. Check that engine speed var-
ies according to the valve opening.
Is the inspection result normal? YES >> GO TO 8.
NO >> GO TO 7. 7.
CHECK EVAP CANISTER PURGE VO LUME 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. 8.
CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EV AP 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
Refer to EC-304, " Component Inspection " .
Is the inspection result normal? YES >> GO TO 10.
NO >> Replace EVAP canister vent control valve. 10.
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent c ontrol 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 >> GO TO 13. 11.
CHECK EVAP CANISTER
Weigh the EVAP canister with the EV AP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 1.9 kg (4.2 lb).
Is the inspection result normal? YES >> GO TO 13.
NO >> GO TO 12. 12.
DETECT MALFUNCTIONING PART
Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehi cle frame for clogging or poor connection
>> Repair hose or replace EVAP canister. 13.
CHECK INTERMITTENT INCIDENT PBIB1213E

Diagnosis Procedure " .
>> INSPECTION END
Component Inspection INFOID:0000000004780178YES >> INSPECTION END
NO >> Replace EVAP canister purge volume control solenoid valveCondition
(PURG VOL C/V value) Air passage continuity
between (A) and (B)
100% Existed 0% Not existed

P0444, P0445 EVAP CANISTER PURG
E VOLUME CONTROL SOLENOID
VALVE
EC-297
< COMPONENT DIAGNOSIS >
[HR16DE] C
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P0444, P0445 EVAP CANISTER PU
RGE VOLUME CONTROL SOLENOID
VALVE
Description INFOID:0000000004780179
The EVAP canister purge volume control solenoid valve is used to
control the flow rate of fuel v apor from the EVAP canister. The EVAP
canister purge volume control solenoid valve is moved by ON/OFF
pulses from the ECM. The longer the ON pulse, the greater the
amount of fuel vapor that will flow through the valve.
DTC Logic INFOID:0000000004780180
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE 1.
CONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confi rm 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 >> Go to
EC-298, " Diagnosis Procedure " .
NO >> INSPECTION END JMBIA0069ZZ
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0444 EVAP canister purge volume
control solenoid valve circuit
open An excessively low voltage signal is sent
to ECM through the valve • Harness or connectors
(The solenoid valve circuit is open or
shorted.)
• EVAP canister purge volume control so- lenoid valve
P0445 EVAP canister purge volume
control solenoid valve circuit
shorted An excessively high voltage signal is sent
to ECM through the valve • Harness or connectors
(The solenoid valve circuit is shorted.)
• EVAP canister purge volume control so- lenoid valve

EC-298< COMPONENT DIAGNOSIS >
[HR16DE]
P0444, P0445 EVAP CANISTER P
URGE VOLUME CONTROL SOLENOID
VALVE
Wiring Diagram INFOID:0000000004780719
Diagnosis Procedure INFOID:00000000047801811.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
3. Turn ignition switch ON. BBWA3000E

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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.
NO >> GO TO 2. YES-1 >> With CONSULT-III: GO TO 4.
YES-2 >> Without CONSULT-III: GO TO 5.
NO >> Repair open circuit or short to ground or short to power in harness or connectors. YES >> GO TO 6.
NO >> GO TO 5. Component Inspection " .
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace EVAP canister purge volume control solenoid valve. Diagnosis Procedure " .
EVAP canister purge volume
control solenoid valve Ground Voltage
Connector Terminal
F22 1 Ground Battery voltage

EC-300< COMPONENT DIAGNOSIS >
[HR16DE]
P0444, P0445 EVAP CANISTER P
URGE VOLUME CONTROL SOLENOID
VALVE
>> INSPECTION END
Component Inspection INFOID:00000000047801821.
CHECK EVAP CANISTER PURGE VO LUME CONTROL SOLENOID VALVE
With CONSULT-III
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 “A CTIVE TEST” mode with CONSULT-III.
6. Touch “Qd” and “Qu” on CONSULT-III 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-III
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 valveCondition
(PURG VOL C/V value) Air passage continuity
between (A) and (B)
100% Existed 0% Not existed PBIA9668J
Condition
Air passage continuity
between (A) and (B)
12 V direct current supply between
terminals 1 and 2 Existed
No supply Not existed PBIA9560J

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P0447 EVAP CANISTER VENT CONTROL VALVE
Description INFOID:0000000004780183
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:0000000004780184
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE YES >> Go to
EC-302, " Diagnosis Procedure " .
NO >> INSPECTION END

B

P0447 EVAP CANISTER VENT CONTROL VALVE
EC-303
< COMPONENT DIAGNOSIS >
[HR16DE] C
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YES >> GO TO 2.
NO >> GO TO 3. 2.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-III
1. Turn ignition switch OFF and then turn ON.
2. Select “VENT CONTROL/V” in “A CTIVE TEST” mode with CONSULT-III.
3. Touch “ON/OFF” on CONSULT-III screen.
4. Check for operating sound of the valve.
Is the inspection result normal? YES >> GO TO 7.
NO >> GO TO 3. 3.
CHECK EVAP CANISTER VENT CONT ROL 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 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.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors E7, M69
• Harness connectors M12, B101
• Harness for open or short between EVAP cani ster vent control valve and IPDM E/R
>> Repair open circuit or short to ground or short to power in 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 the continuity between EVAP canister vent control valve harness connector and ECM harness con-
nector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 7.
NO >> GO TO 6. 6.
DETECT MALFUNCTIONING PART
Check the following.
• Junction block connector F8, E8 Clicking sound should be heard.
EVAP canister vent control valve
Ground Voltage
Connector Terminal
B105 1 Ground Battery voltage PBIB0080E
EVAP canister vent control valve ECM
Continuity
Connector Terminal Connector Terminal
B105 2 E16 28 Existed

YES >> GO TO 8.
NO >> Clean the rubber tube using an air blower. Component Inspection " .
Is the inspection result normal? YES >> GO TO 9.
NO >> Replace EVAP canister vent control valve. Diagnosis Procedure " .
>> INSPECTION END
Component Inspection INFOID:0000000004780186YES >> Replace EVAP canister vent control valve.
NO >> GO TO 2.