Infiniti F50. Manual — part 430
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-361
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Wiring Diagram
EBS00MF8
TBWM0132E
EC-362
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
EBS00MF9
1.
RETIGHTEN GROUND SCREWS
Loosen and retighten engine ground screws.
>> GO TO 2.
2.
CHECK CONNECTOR
1.
Disconnect EVAP control system pressure sensor harness connector.
2.
Check sensor harness connector for water.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness connector.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
89
B
Sensor ground
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
103
L
Sensor power supply
[Ignition switch “ON”]
Approximately 5V
110
G
EVAP control system pres-
sure sensor
[Ignition switch “ON”]
Approximately 1.8 - 4.8V
PBIB0011E
Water should not exist.
PBIB0026E
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
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3.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch “ON”.
2.
Check voltage between EVAP control system pressure sensor
terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors B401, B251
●
Harness connectors B211, M141
●
Harness connectors M135, F105
●
Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair harness or connectors.
5.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT
1.
Turn ignition switch “OFF”.
2.
Check harness continuity between EVAP control system pressure sensor terminal 3 and ECM terminal
89.
Refer to Wiring Diagram.
3.
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 B401, B251
●
Harness connectors B211, M141
●
Harness connectors M135, F105
●
Joint connector-30
●
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.
Voltage: Approximately 5V
PBIB0155E
Continuity should exist.
EC-364
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
7.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminal 110 and EVAP control system pressure sensor terminal
2.
Refer to Wiring Diagram.
3.
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 B401, B251
●
Harness connectors B211, M141
●
Harness connectors M135, F105
●
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 RUBBER TUBE FOR CLOGGING
1.
Disconnect rubber tube connected to EVAP canister vent control valve.
2.
Check the rubber tube for clogging.
OK or NG
OK
>> GO TO 10.
NG
>> Clean the rubber tube using an air blower.
10.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to
EC-350, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace EVAP canister vent control valve.
11.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to
EC-365, "Component Inspection"
OK or NG
OK
>> GO TO 12.
NG
>> Replace EVAP control system pressure sensor.
12.
CHECK RUBBER TUBE
Check obstructed rubber tube connected to EVAP canister vent control valve.
OK or NG
OK
>> GO TO 13.
NG
>> Clean rubber tube using an air blower, repair or replace rubber tube.
Continuity should exist.
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