Infiniti F50. Manual — part 428
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-353
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DTC Confirmation Procedure
EBS00MF0
NOTE:
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.
WITH CONSULT-II
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-II.
5.
Make sure that “FUEL T/TEMP SE” is more than 0
°
C (32
°
F).
6.
Start engine and wait at least 20 seconds.
If 1st trip DTC is detected, go to
EC-355, "Diagnostic Procedure"
.
WITH GST
1.
Start engine and warm it up to normal operating temperature.
2.
Check that voltage between ECM terminal 92 (Fuel tank temper-
ature sensor signal) and ground is less than 4.2V.
3.
Turn ignition switch “OFF” and wait at least 10 seconds.
4.
Start engine and wait at least 20 seconds.
5.
Select “MODE 7” with GST.
If 1st trip DTC is detected, go to
EC-355, "Diagnostic Procedure"
.
SEF194Y
SEF340X
EC-354
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
Wiring Diagram
EBS00MF1
TBWM0132E
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-355
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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
EBS00MF2
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
EC-356
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR
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.
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