Nissan Sentra. Instruction — part 405
EC-316
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
DTC Logic
INFOID:0000000009758554
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
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
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 of “ENGINE” using CONSULT.
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.
2. Set voltmeter probes to ECM harness connector terminals 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
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009758555
1.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Turn ignition switch OFF.
2. Disconnect EVAP control system pressure sensor harness connector.
3. Check sensor harness connector for water.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0453
EVAP SYS PRES SEN
(Evaporative emission system
pressure sensor/switch high)
An excessively high voltage from the
sensor is sent to ECM.
• Harness or connectors
(EVAP control system pressure sensor
circuit is shorted.)
• EVAP control system pressure sensor
ECM
Voltage
Connector
+
−
Terminal
E16
114
124
Less than 4.2 V
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-317
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
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Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace harness connector.
2.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check the voltage between EVAP control system pressure sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
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.
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts
4.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT
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.
4. Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR SIGNAL CIRCUIT
1. Check the continuity between EVAP control system pressure sensor harness connector and ECM har-
ness connector.
Water should not exist.
+
−
Voltage
(Approx.)
EVAP control system pressure sen-
sor
Connector
Terminal
B47
3
Ground
5 V
+
−
Continuity
EVAP control system pres-
sure sensor
ECM
Connector
Terminal
Connector
Terminal
B47
3
E16
113
Existed
+
−
Continuity
EVAP control system pres-
sure sensor
ECM
Connector
Terminal
Connector
Terminal
B47
1
E16
124
Existed
EC-318
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
2. Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK RUBBER TUBE
1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Clean the rubber tube using an air blower, repair or replace rubber tube.
7.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-303, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace EVAP canister vent control valve. Refer to
FL-15, "Removal and Installation"
.
8.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-319, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace EVAP control system pressure sensor. Refer to
FL-15, "Removal and Installation"
.
9.
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2. Check if water will drain from the EVAP canister.
Does water drain from EVAP canister?
YES
>> GO TO 10.
NO
>> Check intermittent incident. Refer to
10.
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
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> GO TO 11.
11.
DETECT MALFUNCTIONING PART
Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
+
−
Continuity
EVAP control system pres-
sure sensor
ECM
Connector
Terminal
Connector
Terminal
B47
2
E16
114
Existed
PBIB1213E
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-319
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
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EC
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>> Repair hose or replace EVAP canister. Refer to
FL-15, "Removal and Installation"
Component Inspection
INFOID:0000000009758556
1.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Turn ignition switch OFF.
2. Remove EVAP control system pressure sensor with 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. Refer to
FL-15, "Removal and Installation"
.
ECM
Condition
[Applied vacuum kPa (kg/cm
2
, psi)]
Voltage
Connector
+
−
Terminal
E16
114
124
Not applied
0.5 - 4.6 V
-26.7 (-0.272, -3.87)
2.1 to 2.5 V lower than above value
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