Nissan Cube. Manual — part 349
EC-282
< DTC/CIRCUIT DIAGNOSIS >
[MR18DE]
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B4, M79
• Harness connectors M77, E105
• Harness connectors E8, F1
• 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.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair short to ground or short to power in harness or connectors.
7.
CHECK COMPONENTS
Check the following.
• Battery current sensor (Refer to
EC-337, "Component Inspection"
.)
• Crankshaft position sensor (POS) (Refer to
EC-244, "Component Inspection"
• Refrigerant pressure sensor (Refer to
.)
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace malfunctioning component.
8.
CHECK APP SENSOR
EC-385, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 9.
9.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1.
Replace accelerator pedal assembly
2.
EC-385, "Special Repair Requirement"
>> INSPECTION END
10.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT
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.
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F8
74
Refrigerant pressure sensor
E49
3
75
CKP sensor (POS)
F20
1
76
EVAP control system pressure sen-
sor
B21
3
77
Battery current sensor
F53
1
E16
102
APP sensor
E110
5
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-283
< DTC/CIRCUIT DIAGNOSIS >
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4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> GO TO 11.
11.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B4, M79
• Harness connectors M77, E105
• Harness connectors E8, F1
• 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.
12.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
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 B4, M79
• Harness connectors M77, E105
• Harness connectors E8, F1
• 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 SYSTEM PRESSURE SENSOR
EC-284, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace EVAP control system pressure sensor.
15.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
EVAP control system pressure sen-
sor
ECM
Continuity
Connector
Terminal
Connector
Terminal
B21
1
F8
51
Existed
EVAP control system pressure sen-
sor
ECM
Continuity
Connector
Terminal
Connector
Terminal
B21
2
F8
42
Existed
EC-284
< DTC/CIRCUIT DIAGNOSIS >
[MR18DE]
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Component Inspection
INFOID:0000000009947396
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
ECM
Condition
[Applied vacuum kPa (kg/cm
2
, psi)
Voltage
Connector
Terminal
F8
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
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-285
< DTC/CIRCUIT DIAGNOSIS >
[MR18DE]
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P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Description
INFOID:0000000009947397
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:0000000009947398
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, 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
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.
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
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.)
(Battery current 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
• Battery current sensor
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