2009 NISSAN LATIO ignition

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-315
< COMPONENT DIAGNOSIS >
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P0452 EVAP CONTROL SYST
EM PRESSURE SENSOR
Description INFOID:0000000004780195
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pres-
sure increases.
DTC Logic INFOID:0000000004780196
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE 1.
PRECONDITIONING
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.
>> GO TO 2. 2.
PERFORM DTC CONFIRMATION PROCEDURE
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” indication is more than 0 °C (32 °F).
6. Start engine and wait at least 20 seconds.
7. Check 1st trip DTC.
With GST
1. Start engine and warm it up to normal operating temperature. PBIB3370E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0452 EVAP control system
pressure sensor low input An excessively low 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

EC-318< COMPONENT DIAGNOSIS >
[HR16DE]
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
YES >> GO TO 2.
NO >> Repair or replace ground connection. 2.
CHECK CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace harness connector. 3.
CHECK EVAP CONTROL SYST EM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check the voltage between EVAP control system pressure sen- sor harness connector and ground.
Is the inspection result normal? YES >> GO TO 10.
NO >> GO TO 4. 4.
CHECK EVAP CONTROL SYST EM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EVAP control system pressure sensor harness connector and ECM har-
ness connector.
Is the inspection result normal? YES >> GO TO 6.
NO >> GO TO 5. 5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B102, M13
• Harness connectors M69, E7
• Harness connectors E8, F8
• 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. 6.
CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals. Water should not exist.
EVAP control system pressure sensor Ground Voltage
Connector Terminal
B104 3 Ground Approx. 5 V PBIB0138E
EVAP control system pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
B104 3 F11 76 Existed

EC-320< COMPONENT DIAGNOSIS >
[HR16DE]
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
12. CHECK EVAP CONTROL SYSTEM PRESSURE SEN SOR INPUT SIGNAL CIRCUIT FOR OPEN ANDSHORT
1. Check the continuity between EVAP control system pressure sensor harness connector and ECM har- ness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 14.
NO >> GO TO 13. 13.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B102, M13
• Harness connectors M69, E7
• Harness connectors E8, F8
• 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. 14.
CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR
Refer to EC-320, " Component Inspection " .
Is the inspection result normal? YES >> GO TO 15.
NO >> Replace EVAP control system pressure sensor. 15.
CHECK INTERMITTENT INCIDENT
Refer to EC-120, " Diagnosis Procedure " .
>> INSPECTION END
Component Inspection INFOID:00000000047804511.
CHECK EVAP CONTROL SY STEM PRESSURE SENSOR
1. Turn ignition switch OFF.
2. Remove EVAP control system pressure sensor wit h its harness connector connected from EVAP canister.
Always replace O-ring with a new one.
3. Install a vacuum pump to EVAP control system pressure sensor.
4. Turn ignition switch ON and check output voltage between ECM harness connector and ground under the following conditions.
CAUTION:
• Always calibrate the vacuum pump gauge when using it.
• Do not apply below -93.3 kPa (-0.952 kg/cm 2
, -13.53 psi) or pressure over 101.3 kPa (1.033 kg/
cm 2
, 14.69 psi).
Is the inspection result normal? EVAP control system pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
B104 2 F11 42 Existed ECM Condition
[Applied vacuum kPa
(kg/cm 2
, psi) Voltage
Connector Terminal
F11 42
(EVAP control system
pressure sensor signal) Not applied 1.8 - 4.8 V
-26.7 (-0.272, -3.87) 2.1 to 2.5 V lower
than above value PBIB3314E

EC-322< COMPONENT DIAGNOSIS >
[HR16DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Description INFOID:0000000004780199
The EVAP control system pressure s ensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pres-
sure increases.
DTC Logic INFOID:0000000004780200
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE 1.
PRECONDITIONING
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.
>> GO TO 2. 2.
PERFORM DTC CONFIRMATION PROCEDURE
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” indication is more than 0°C (32 °F).
6. Start engine and wait at least 20 seconds.
7. Check 1st trip DTC.
With GST
1. Start engine and warm it up to normal operating temperature. PBIB3370E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0453 EVAP control system pres-
sure sensor high input 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 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
• Rubber hose from EVAP canister vent control valve to vehicle frame

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-323
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2. Set voltmeter probes to ECM harness connector and ground as
per the following.
3. Make sure that the voltage is less than 4.2 V.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and wait at least 20 seconds.
6. Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Go to
EC-324, " Diagnosis Procedure " .
NO >> INSPECTION END ECM
Ground
Connector Terminal
F11 43
(Fuel tank temperature sensor signal) Ground SEF113U

EC-324< COMPONENT DIAGNOSIS >
[HR16DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Wiring Diagram INFOID:0000000004780721
Diagnosis Procedure INFOID:00000000047802011.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connections E15, E24. Refer to EC-125, " Ground Inspection " .
Is the inspection result normal? AABWA0311G B

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-325
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YES >> GO TO 2.
NO >> Repair or replace ground connection. 2.
CHECK CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace harness connector. 3.
CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check the voltage between EVAP control system pressure sen- sor harness connector and ground.
Is the inspection result normal? YES >> GO TO 10.
NO >> GO TO 4. 4.
CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EVAP control syst em pressure sensor harness connector and ECM har-
ness connector.
Is the inspection result normal? YES >> GO TO 6.
NO >> GO TO 5. 5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B102, M13
• Harness connectors M69, E7
• Harness connectors E8, F8
• 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. 6.
CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
Water should not exist.
EVAP control system pressure sensor Ground Voltage
Connector Terminal
B104 3 Ground Approx. 5 V PBIB0138E
EVAP control system pressure sensor ECM
Continuity
Connector Terminal Connector Terminal
B104 3 F11 76 Existed

EC-328< COMPONENT DIAGNOSIS >
[HR16DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR 18.
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 1.9 kg (4.2 lb).
Is the inspection result normal? YES >> GO TO 15.
NO >> GO TO 14. 19.
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. 20.
CHECK INTERMITTENT INCIDENT
Refer to EC-120, " Diagnosis Procedure " .
>> INSPECTION END
Component Inspection INFOID:00000000047804521.
CHECK EVAP CONTROL SY STEM PRESSURE SENSOR
1. Turn ignition switch OFF.
2. Remove EVAP control system pressure sensor wit h its harness connector connected from EVAP canister.
Always replace O-ring with a new one.
3. Install a vacuum pump to EVAP control system pressure sensor.
4. Turn ignition switch ON and check output voltage between ECM
harness connector and ground under the following conditions.
CAUTION:
• Always calibrate the vacuum pump gauge when using it.
• Do not apply below -93.3 kPa (-0.952 kg/cm 2
, -13.53 psi) or pressure over 101.3 kPa (1.033 kg/
cm 2
, 14.69 psi).
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace EVAP control system pressure sensor ECM Condition
[Applied vacuum kPa
(kg/cm 2
, psi) Voltage
Connector Terminal
F11 42
(EVAP control system
pressure sensor signal) Not applied 1.8 - 4.8 V
-26.7 (-0.272, -3.87) 2.1 to 2.5 V lower
than above value PBIB3314E