Infiniti FX35, FX50 (S51). Manual — part 846
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-925
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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 B201, M117
• Harness connectors M116, F103
• Harness for open between ECM and EVAP control system pressure sensor
>> Repair open circuit.
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-1025, "Component Inspection"
.)
• Camshaft position sensor (bank 1) (Refer to
EC-881, "Component Inspection"
• Crankshaft position sensor (Refer to
EC-876, "Component Inspection"
• Exhaust valve timing control position sensor (bank 1) (Refer to
EC-978, "Component Inspection"
.)
• Manifold absolute pressure sensor (Refer to
EC-785, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace malfunctioning component.
8.
CHECK APP SENSOR
EC-1081, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> GO TO 9.
9.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1.
Replace accelerator pedal assembly
EVAP control system pressure sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
B252
3
M160
107
Existed
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F111
87
Crankshaft position sensor
F2
1
91
Camshaft position sensor (bank 1)
F84
1
EVT control position sensor (bank 1)
F59
1
95
Battery current sensor
E21
1
EVAP control system pressure sensor
B252
3
Manifold absolute pressure sensor
F65
3
M160
99
APP sensor 2 (Without ICC)
E112
6
APP sensor 2 (With ICC)
E116
3
EC-926
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P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
2.
EC-1082, "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.
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 B201, M117
• Harness connectors M116, F103
• Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit, 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 B201, M117
• Harness connectors M116, F103
• Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
14.
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 15.
EVAP control system
pressure sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
B252
1
F111
70
Existed
EVAP control system
pressure sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
B252
2
F111
80
Existed
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-927
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NO
>> Clean the rubber tube using an air blower, repair or replace rubber tube.
15.
CHECK EVAP CANISTER VENT CONTROL VALVE
EC-909, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Replace EVAP canister vent control valve.
16.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-927, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> Replace EVAP control system pressure sensor.
17.
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 (1).
-
EVAP canister vent control valve (2)
Does water drain from EVAP canister?
YES
>> GO TO 18.
NO
>> GO TO 20.
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 2.1 kg (4.6 lb).
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> GO TO 19.
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
GI-36, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000005237395
1.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
1.
Turn ignition switch OFF.
2.
Remove EVAP control system pressure sensor with its harness connector.
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 terminals under the
following conditions.
PBIB2731E
EC-928
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P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
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).
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 (V)
Connector
+
–
Terminal
Terminal
F111
80
70
Not applied
1.8 - 4.8
-26.7 (-0.272, -3.87)
2.1 to 2.5 lower than above value
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