NISSAN LATIO 2009 Service Repair Manual

DTC P0452 EVAP CONTROL
SYSTEM PRESSURE SENSOR
EC-1355
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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G H
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M A EC
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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 EVAP CONTROL SYS TEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 5.
NG >> GO TO 4. 4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between EVAP c ontrol system pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors. 5.
CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control s ystem pressure sensor terminal 3 and ECM terminal
76.
OK or NG OK >> GO TO 7.
NG >> GO TO 6. 6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between EVAP c ontrol system pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors. 7.
CHECK COMPONENTS POWER SUPPLY
Check harness for short to power and short to ground, between the following terminals.
Water should not exist. BBIA0693E
Voltage: Approximately 5V
PBIB0138E
Continuity should exist.

OK >> GO TO 8.
NG >> Repair short to ground or short to power in harness or connectors. .)
• Crankshaft position sensor (POS) (Refer to EC-1298, " Component Inspection " .)
OK or NG OK >> GO TO 9.
NG >> Replace malfunctioning components. Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> GO TO 10. Accelerator Pedal Released Position Learning " .
3. Perform EC-1084, " Throttle Valve Closed Position Learning " .
4. Perform EC-1084, " Idle Air Volume Learning " .
>> INSPECTION END OK >> GO TO 13.
NG >> GO TO 12. 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 "

DTC P0452 EVAP CONTROL
SYSTEM PRESSURE SENSOR
EC-1357
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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M A EC
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1. Check harness continuity between ECM terminal 42 and EVAP control system pressure sensor terminal
2. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 15.
NG >> GO TO 14. 14.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between ECM and EVAP control system pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors. 15.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-1350, " Component Inspection " .
OK or NG OK >> GO TO 16.
NG >> Replace EVAP control system pressure sensor. 16.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
>> INSPECTION END
Component Inspection INFOID:0000000004501197
EVAP CONTROL SYSTEM PRESSURE SENSOR 1. Remove EVAP control system pr essure sensor with its harness connec tor connected from EVAP canister.
Always replace O-ring with a new one.
2. Install a vacuum pump to EVAP control system pressure sensor.
3. Turn ignition switch ON and check output voltage between ECM terminal 42 (EVAP control system pressure sensor signal) and
ground under the following conditions.
CAUTION:
• Always calibrate the vacuum pu mp gauge when using it.
• Do not apply below -93.3 kP a (-700 mmHg, -27.56 inHg) or
pressure over 101.3 kPa (760 mmHg, 29.92 inHg).
4. If NG, replace EVAP control system pressure sensor. Continuity should exist.
Applied vacuum kPa (mmHg, inHg) Voltage V
Not applied 1.8 - 4.8
-26.7 (-200, -7.87) 2.1 to 2.5V lower than above value PBIB3314E

EC-1358< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Component Description INFOID:0000000004501195
The EVAP control system pressure sensor (1) detects pressure in
the purge line. The sensor output voltage to the ECM increases as
pressure increases.
• EVAP canister (2)
• EVAP canister vent control valve (3)
CONSULT-III Reference Value in Data Monitor Mode INFOID:0000000004501196
Specification data are reference values.
On Board Diagn osis Logic INFOID:0000000004500223 BBIA0693E
PBIB1207E
MONITOR ITEM CONDITION SPECIFICATION
EVAP SYS PRES • Ignition switch: ON Approx. 1.8 - 4.8V DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0453
0453 EVAP control system
pressure sensor high in-
put An excessively high voltage from the sensor is
sent to ECM. • Harness or connectors
(EVAP control system pressure sensor
circuit is open or shorted.)
[Crankshaft position sensor (POS) circuit
is shorted.)
(Accelerator pedal position sensor circuit
is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
• EVAP control system pressure sensor
• Crankshaft position sensor (POS)
• Accelerator pedal position sensor
• Refrigerant pressure sensor
• EVAP canister vent control valve
• EVAP canister
• Drain filter
• Rubber hose to EVAP canister vent con- trol valve

DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
EC-1359
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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M A EC
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DTC Confirmation Procedure
INFOID:0000000004500224
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:
Always perform test at a temperature of 5 °C (41 °F) or more.
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. Wait at least 10 seconds.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to EC-1361, " 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. Wait at least 10 seconds.
5. Select Service $07 with GST.
If 1st trip DTC is detected, go to EC-1361, " Diagnosis Proce-
dure " .
SEF113U

EC-1360< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
Wiring Diagram INFOID:0000000004501199
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring in put/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground. AABWA0225G B

DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
EC-1361
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
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M A EC
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Diagnosis Procedure
INFOID:00000000045002261.
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. Engine ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 BBIA0698E

EC-1362< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
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 EVAP CONTROL SYST EM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 5.
NG >> GO TO 4. 4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors. 5.
CHECK EVAP CONTROL SYST EM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control sy stem pressure sensor terminal 3 and ECM terminal
76.
OK or NG OK >> GO TO 7.
NG >> GO TO 6. 6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors. 7.
CHECK COMPONENTS POWER SUPPLY
Check harness for short to power and short to ground, between the following terminals. Water should not exist. BBIA0693E
Voltage: Approximately 5V
PBIB0138E
Continuity should exist.

EC
NP
O
OK or NG OK >> GO TO 8.
NG >> Repair short to ground or short to power in harness or connectors. .)
• Crankshaft position sensor (POS) (Refer to EC-1298, " Component Inspection " .)
OK or NG OK >> GO TO 9.
NG >> Replace malfunctioning components. Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> GO TO 10. Accelerator Pedal Released Position Learning " .
3. Perform EC-1084, " Throttle Valve Closed Position Learning " .
4. Perform EC-1084, " Idle Air Volume Learning " .
>> INSPECTION END OK >> GO TO 13.
NG >> GO TO 12. 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-1364< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
1. Check harness continuity between ECM terminal 42 and EVAP control system pressure sensor terminal
2. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 15.
NG >> GO TO 14. 14.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between ECM and EV AP control system pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors. 15.
CHECK RUBBER TUBE
1. Disconnect rubber tube connected to EV AP canister vent control valve.
2. Check the rubber tube for clogging, vent and kinked.
OK or NG OK >> GO TO 16.
NG >> Clean the rubber tube using an air blower, repair or replace rubber tube. 16.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-1340, " Component Inspection " .
OK or NG OK >> GO TO 17.
NG >> Replace EVAP canister vent control valve. 17.
CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR
Refer to EC-1350, " Component Inspection " .
OK or NG OK >> GO TO 18.
NG >> Replace EVAP control system pressure sensor. 18.
CHECK DRAIN FILTER
Refer to EC-1314, " Component Inspection " .
OK or NG OK >> GO TO 19.
NG >> Replace drain filter. 19.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2. Does water drain from the EVAP canister?
Yes or No Yes >> GO TO 20.
No >> GO TO 22. Continuity should exist.
PBIB1213E