Nissan Pathfinder (2011 year). Manual — part 340
EC-774
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
7. Start engine and wait at least 100 seconds.
NOTE:
Do not depress accelerator pedal even slightly.
8. Check 1st trip DTC.
9. If 1st trip DTC is detected, go to
If 1st trip DTC is not detected, go to the next step.
10. Turn ignition switch OFF and wait at least 10 seconds.
11. Turn ignition switch ON.
12. Turn ignition switch OFF and wait at least 10 seconds.
13. Start engine and wait at least 100 seconds.
NOTE:
Do not depress accelerator pedal even slightly.
14. Check 1st trip DTC.
15. If 1st trip DTC is detected, go to
If 1st trip DTC is not detected, go to the next step.
16. Turn ignition switch OFF and wait at least 10 seconds.
17. Turn ignition switch ON.
18. Turn ignition switch OFF and wait at least 10 seconds.
19. Start engine and wait at least 100 seconds.
NOTE:
Do not depress accelerator pedal even slightly.
20. Check 1st trip DTC.
21. If 1st trip DTC is detected, go to
If 1st trip DTC is not detected, go to the next step.
22. Turn ignition switch OFF and wait at least 10 seconds.
23. Turn ignition switch ON.
24. Turn ignition switch OFF and wait at least 10 seconds.
25. Start engine and wait at least 100 seconds.
NOTE:
Do not depress accelerator pedal even slightly.
26. Check 1st trip DTC.
27. If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000006244421
1.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
BBIA0539E
2011 Pathfinder
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-775
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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1. Disconnect EVAP control system pressure sensor (2) harness
connector.
-
Fuel filler pipe (top of frame view) (1)
-
EVAP canister vent control valve (3)
-
EVAP canister (4)
-
Drain filter (5)
-
: Vehicle front
2. Check sensor harness connector for water.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness connector.
3.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-775, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> Replace EVAP control system pressure sensor. Refer to
FL-16, "Removal and Installation"
.
4.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
.
>>
INSPECTION END
Component Inspection
INFOID:0000000006244422
EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Remove EVAP control system pressure sensor with its harness connector. Refer to
.
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 32 and ground under the following conditions.
CAUTION:
• Always calibrate the vacuum pump gauge when using it.
• Never 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).
4. If NG, replace EVAP control system pressure sensor. Refer to
FL-16, "Removal and Installation"
.
Water should not exist.
AWBIA0134ZZ
Applied vacuum
[kPa (kg/cm
2
, psi)]
Voltage
Not applied
1.8 - 4.8 V
-26.7 (-0.272, -3.87)
2.1 to 2.5 V lower than above value
PBIB1173E
2011 Pathfinder
EC-776
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Component Description
INFOID:0000000006244423
The EVAP control system pressure sensor (2) detects pressure in
the purge line. The sensor output voltage to the ECM increases as
pressure increases.
• Fuel filler pipe (top of frame view) (1)
• EVAP canister vent control valve (3)
• EVAP canister (4)
• Drain filter (5)
•
: Vehicle front
On Board Diagnosis Logic
INFOID:0000000006244424
NOTE:
If DTC P0452 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-815, "DTC Confirmation Procedure"
.
DTC Confirmation Procedure
INFOID:0000000006244425
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next step.
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.
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. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON.
6. Select “DATA MONITOR” mode with CONSULT-III.
7. Check that “FUEL T/TMP SE” is more than 0
°
C (32
°
F).
AWBIA0134ZZ
PBIB3370E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0452
0452
EVAP control system pressure
sensor low input
An excessively low voltage from the sensor
is sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• EVAP control system pressure sensor
2011 Pathfinder
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-777
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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8. Start engine and wait at least 20 seconds.
9. Check 1st trip DTC.
10. If 1st trip DTC is detected, go to
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 107 (Fuel tank tem-
perature sensor signal) and ground is less than 4.2V.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and wait at least 20 seconds.
7. Select Service $07 with GST.
If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000006244426
1.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK CONNECTOR
1. Disconnect EVAP control system pressure sensor (2) harness
connector.
-
Fuel filler pipe (top of frame view) (1)
-
EVAP canister vent control valve (3)
-
EVAP canister (4)
-
Drain filter (5)
-
: Vehicle front
2. Check sensor harness connector for water.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness connector.
3.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
PBIB1110E
BBIA0539E
Water should not exist.
AWBIA0134ZZ
2011 Pathfinder
EC-778
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
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 C1, E41
• Harness connectors E5, F14
• 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 SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal
67.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors C1, E41
• Harness connectors E5, F14
• 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 EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1. Check harness continuity between ECM terminal 32 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 9.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors C1, E41
• Harness connectors E5, F14
Voltage: Approximately 5 V
PBIB0138E
Continuity should exist.
Continuity should exist.
2011 Pathfinder
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-779
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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• 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.
9.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-779, "Component Inspection"
OK or NG
OK
>> GO TO 10.
NG
>> Replace EVAP control system pressure sensor. Refer to
FL-16, "Removal and Installation"
.
10.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
.
>>
INSPECTION END
Component Inspection
INFOID:0000000006244427
EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Remove EVAP control system pressure sensor with its harness connector. Refer to
.
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 32 and ground under the following conditions.
CAUTION:
• Always calibrate the vacuum pump gauge when using it.
• Never 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).
4. If NG, replace EVAP control system pressure sensor. Refer to
FL-16, "Removal and Installation"
.
Applied vacuum
[kPa (kg/cm
2
, psi)]
Voltage
Not applied
1.8 - 4.8 V
-26.7 (-0.272, -3.87)
2.1 to 2.5 V lower than above value
PBIB1173E
2011 Pathfinder
EC-780
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Component Description
INFOID:0000000006244428
The EVAP control system pressure sensor (2) detects pressure in
the purge line. The sensor output voltage to the ECM increases as
pressure increases.
• Fuel filler pipe (top of frame view) (1)
• EVAP canister vent control valve (3)
• EVAP canister (4)
• Drain filter (5)
•
: Vehicle front
On Board Diagnosis Logic
INFOID:0000000006244429
NOTE:
If DTC P0453 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-820, "DTC Confirmation Procedure"
.
DTC Confirmation Procedure
INFOID:0000000006244430
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next step.
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.
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.
AWBIA0134ZZ
PBIB3370E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0453
0453
EVAP control system pressure
sensor high input
An excessively high voltage from the
sensor is sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• EVAP control system pressure sensor
• EVAP canister vent control valve
• EVAP canister
• Drain filter
• Rubber hose from EVAP canister vent
control valve to drain filter
2011 Pathfinder
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-781
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON.
6. Select “DATA MONITOR” mode with CONSULT-III.
7. Check that “FUEL T/TMP SE” is more than 0
°
C (32
°
F).
8. Start engine and wait at least 20 seconds.
9. Check 1st trip DTC.
10. If 1st trip DTC is detected, go to
With GST
1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 107 (Fuel tank tem-
perature sensor signal) and ground is less than 4.2V.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and wait at least 20 seconds.
7. Select Service $07 with GST.
If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000006244431
1.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK CONNECTOR
1. Disconnect EVAP control system pressure sensor (2) harness
connector.
-
Fuel filler pipe (top of frame view) (1)
-
EVAP canister vent control valve (3)
-
EVAP canister (4)
-
Drain filter (5)
-
: Vehicle front
2. Check sensor harness connector for water.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness connector.
PBIB1110E
BBIA0539E
Water should not exist.
AWBIA0134ZZ
2011 Pathfinder
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