2009 NISSAN LATIO Service Repair Manual

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Page 2177 of 4331

NISSAN LATIO 2009 Service Repair Manual EC
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INSPECTION END
Component Inspection INFOID:0000000004537314
EVAP CANISTER VENT CONTROL VALVE With CONSULT-III
1. Remove EVAP canister vent c ontrol valve from EVAP canister.
2. Check port

Page 2178 of 4331

Page 2179 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0448 EVAP CANISTER
VENT CONTROL VALVE
EC-823
< SERVICE INFOMATION >
[MR TYPE 1] C
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DTC P0448 EVAP CANISTER VENT CONTROL VALVE
Component Description INFOID:0000000004

DTC P0448 EVAP CANISTER
VENT CONTROL VALVE
EC-823
< SERVICE INFOMATION >
[MR TYPE 1] C
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DTC P0448 EVAP CANISTER VENT CONTROL VALVE
Component Description INFOID:0000000004537315
The EVAP canister vent control valve (3) is located on the EVAP
canister (2) 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 diagnoses.
• EVAP control system pressure sensor (1)
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004537316
Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004537317
DTC Confirmation Procedure INFOID:0000000004537318
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
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.
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 three times.
a. Increase the engine speed up to 3,000 to 3,500 rpm and keep it for 2 minutes and 50 seconds to 3 min- utes. PBIB1263E
BBIA0693E
MONITOR ITEM CONDITION SPECIFICATION
VENT CONT/V • Ignition switch: ON OFF DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0448
0448 EVAP canister vent con-
trol 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

Page 2180 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-824< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0448 EVAP CANISTER VENT CONTROL VALVE
Never exceed 3 minutes.
b. Fully released accelerator pedal and keep engine idle for about 5 seconds.
5. Check 1st t

Page 2181 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0448 EVAP CANISTER
VENT CONTROL VALVE
EC-825
< SERVICE INFOMATION >
[MR TYPE 1] C
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Wiring Diagram
INFOID:0000000004537319
Specification data are reference values an

Page 2182 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-826< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0448 EVAP CANISTER VENT CONTROL VALVE
Diagnosis Procedure INFOID:00000000045373201.
CHECK RUBBER TUBE
1. Turn ignition switch OFF.
2. Disconnect rubber tu

Page 2183 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0448 EVAP CANISTER
VENT CONTROL VALVE
EC-827
< SERVICE INFOMATION >
[MR TYPE 1] C
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OK >> GO TO 6.
NG >> GO TO 5. 5.
DETECT MALFUNCTIONING PART
Check the following.
�

Page 2184 of 4331

NISSAN LATIO 2009 Service Repair Manual EC-828< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0448 EVAP CANISTER VENT CONTROL VALVE
6. Check air passage continuity and operation delay time.
Operation takes less than 1 second.
Make sure new O-ring i

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