2009 NISSAN LATIO check engine

EC-1334< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0444, P0445 EVAP CANISTER
PURGE VOLUME CONTROL SOLENOID
VALVE
4. Check voltage between EVAP canister purge volume control solenoid valve terminal 1 and ground with CONSULT-III or
tester.
OK or NG OK >> GO TO 3.
NG >> GO TO 2. 2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK EVAP CANISTER PURGE VOLUME CONTRO L SOLENOID VALVE OUTPUT SIGNAL CIRCUITFOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 9 and EVAP canister purge volume control solenoid
valve terminal 2. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK (With CONSULT-III)>>GO TO 4.
OK (Without CONSULT-III)>>GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Reconnect all harness connectors disconnected.
2. Start engine.
3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” m ode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
OK or NG OK >> GO TO 6.
NG >> GO TO 5. 5.
CHECK EVAP CANISTER PURGE VO LUME CONTROL SOLENOID VALVE
Refer to EC-1329, " Component Inspection " .
OK or NG OK >> GO TO 6.
NG >> Replace EVAP canister purge volume control solenoid valve. 6.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
>> INSPECTION END
Component Inspection INFOID:0000000004501187
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE Voltage: Battery voltage
SEF206W
Continuity should exist.

EC-1336< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
Component Description INFOID:0000000004500194
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 Value in Data Monitor Mode INFOID:0000000004500195
Specification data are reference values.
On Board Diagn osis Logic INFOID:0000000004500196
DTC Confirmation Procedure INFOID:0000000004500197
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.
TESTING CONDITION:
Before performing the following procedure, conf irm battery voltage is more than 11V at idle.
1. Start engine and wait at least 8 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-1338, " Diagnosis Procedure " . PBIB3642E
BBIA0693E
MONITOR ITEM CONDITION SPECIFICATION
VENT CONT/V • Ignition switch: ON OFF DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0447
0447 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
(EVAP canister vent control valve circuit
is open or shorted.)
• EVAP canister vent control valve
• Drain filter

EC-1338< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0447 EVAP CANISTER VENT CONTROL VALVE
Diagnosis Procedure INFOID:00000000045001991.
INSPECTION START
1. Do you have CONSULT-III?
Yes or No Yes >> GO TO 2.
No >> GO TO 3. 2.
CHECK EVAP CANISTER VE NT 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.
OK or NG OK >> GO TO 8.
NG >> 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 (3) harness con-
nector.
- EVAP control system pressure sensor (1)
- EVAP canister (2)
3. Turn ignition switch ON. TER-
MI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
28 W EVAP canister vent control
valve [Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
32 P ECM relay
(Self shut-off) [Engine is running]
[Ignition switch: OFF]
• For a few seconds after turning ignition switch OFF 0 - 1.0V
[Ignition switch: OFF]
• More than a few seconds after turning igni-
tion switch OFF BATTERY VOLTAGE
(11 - 14V)
105 G Power supply for ECM [Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V) Clicking noise should be heard.
BBIA0693E

DTC P0448 EVAP CANISTER
VENT CONTROL VALVE
EC-1343
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
O
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.
Never exceed 3 minutes.
b. Fully released accelerator pedal and keep engine idle for about 5 seconds.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-1345, " Diagnosis Procedure " .
If 1st trip DTC is not detected, go to the next step.
7. Repeat next procedure 20 times.
a. Quickly increase the engine speed up to 4,000 to 4,500 rpm or more and keep it for 25 to 30 seconds.
b. Fully released accelerator pedal and keep engine idle for at least 35 seconds.
8. Check 1st trip DTC.
9. If 1st trip DTC is detected, go to EC-1345, " Diagnosis Procedure " . PBIB0972E

DTC P0448 EVAP CANISTER
VENT CONTROL VALVE
EC-1345
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
O
Diagnosis Procedure
INFOID:00000000045002061.
CHECK RUBBER TUBE
1. Turn ignition switch OFF.
2. Disconnect rubber tube connected to EVAP canister vent control valve (3).
3. Check the rubber tube for clogging.
- EVAP control system pressure sensor (1)
- EVAP canister (2)
OK or NG OK >> GO TO 2.
NG >> Clean rubber tube using an air blower. 2.
CHECK DRAIN FILTER
Refer to EC-1314, " Component Inspection " .
OK or NG OK >> GO TO 3.
NG >> Replace drain filter. 3.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-1340, " Component Inspection " .
OK or NG OK >> GO TO 4.
NG >> Replace EVAP canister vent control valve. 4.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP c anister vent control valve attached.
TER-
MI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
28 W EVAP canister vent control
valve [Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
32 P ECM relay
(Self shut-off) [Engine is running]
[Ignition switch: OFF]
• For a few seconds after turning ignition switch OFF 0 - 1.0V
[Ignition switch: OFF]
• More than a few seconds after turning igni-
tion switch OFF BATTERY VOLTAGE
(11 - 14V)
105 G Power supply for ECM [Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V) BBIA0693E

DTC P0451 EVAP CONTROL
SYSTEM PRESSURE SENSOR
EC-1349
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
O
Do not depress accelerator pedal even slightly.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to EC-1349, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:00000000045002121.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
Refer to EC-1144, " Ground Inspection " .
OK or NG OK >> GO TO 2.
NG >> Repair or replace ground connections. 2.
CHECK EVPA CONTROL SYS TEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Disconnect EVAP control system pressure sensor (1) harness
connector.
- EVAP canister (2)
- EVAP canister vent control valve (3)
2. Check sensor harness connector for water.
OK or NG OK >> GO TO 3.
NG >> Repair or replace harness connector. 3.
CHECK COMPONENTS POWER SUPPLY
Check harness for short to power and short to ground, between the following terminals.
OK or NG OK >> GO TO 4.
NG >> Repair short to ground or short to power in harness or connectors. 4.
CHECK COMPONENTS
Check the following. :
Vehicle front
1. Body ground E24 2. Engine ground F9 3. engine ground F16
4. Body ground E15 BBIA0698E
Water should not exist.
BBIA0693E
ECM terminal Sensor terminal Reference Wiring Diagram
74 Refrigerant pressure sensor terminal 3 EC-1528, " Wiring Diagram "
75 Crankshaft position sensor (POS) terminal 1
EC-1294, " Wiring Diagram "
76 EVAP control system pressure sensor terminal 3
EC-1353, " Wiring Diagram "
102 APP sensor terminal 5
EC-1471, " Wiring Diagram "

EC-1352< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0452 EVAP CONTROL
SYSTEM PRESSURE SENSOR
WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select “DATA MONITOR” mode with CONSULT-III.
5. Make sure that “FUEL T/TMP SE” is more than 0 °C (32 °F).
6. Start engine and wait at least 20 seconds.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to EC-1354, " Diagnosis Procedure " .
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 43 (Fuel tank temper-
ature sensor signal) and ground is less than 4.2V.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and wait at least 20 seconds.
5. Select Service $07 with GST. If 1st trip DTC is detected, go to EC-1354, " Diagnosis Proce-
dure " .
SEF113U

EC-1354< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0452 EVAP CONTROL
SYSTEM PRESSURE SENSOR
Diagnosis Procedure INFOID:00000000045002191.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
Refer to EC-1144, " Ground Inspection " .
OK or NG OK >> GO TO 2.
NG >> Repair or replace ground connections. 2.
CHECK CONNECTOR
TER-
MI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
42 V EVAP control system pres-
sure sensor [Ignition switch: ON]
Approximately 1.8 - 4.8V
51 O Sensor ground
(EVAP control system pres-
sure sensor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0V
74 W Sensor power supply
(Refrigerant pressure
sensor) [Ignition switch: ON]
Approximately 5V
75 BR Sensor power supply
[Crankshaft position sensor
(POS)] [Ignition switch: ON]
Approximately 5V
76 W EVAP control system pres-
sure sensor power supply [Ignition switch: ON]
Approximately 5V
102 SB Sensor power supply
(Accelerator pedal position
sensor 2) [Ignition switch: ON]
Approximately 5V:
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 BBIA0698E