Infiniti I30 (A33). Manual — part 269
I
Rubber hose from EVAP canister vent control valve to water
separator
DTC Confirmation Procedure
NHEC0239
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.
SEF194Y
SEF340X
WITH CONSULT-II
NHEC0239S01
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.
7)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-393.
WITH GST
NHEC0239S02
1)
Start engine and warm it up to normal operating temperature.
2)
Check that voltage between ECM terminal 92 (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)
Start engine and wait at least 20 seconds.
5)
Select “MODE 7” with GST.
6)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-393.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Possible Cause (Cont’d)
EC-391
Wiring Diagram
NHEC0240
MEC360D
SEF623XB
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Wiring Diagram
EC-392
Diagnostic Procedure
NHEC0241
1
CHECK RUBBER TUBE
1. Turn ignition switch “OFF”.
2. Check rubber tube connected to the EVAP control system pressure sensor for clogging, vent, kink, disconnection or
improper connection.
SEF268X
OK or NG
OK
©
GO TO 2.
NG
©
Reconnect, repair or replace.
2
RETIGHTEN GROUND SCREWS
Loosen and retighten engine ground screws.
SEF255X
©
GO TO 3.
3
CHECK CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.
Water should not exist.
OK or NG
OK
©
GO TO 4.
NG
©
Repair or replace harness connector.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Diagnostic Procedure
EC-393
4
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.
SEF341X
OK or NG
OK
©
GO TO 6.
NG
©
GO TO 5.
5
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors B2, M2
I
Harness connectors M81, F49
I
Harness for open or short between EVAP control system pressure sensor and ECM
©
Repair harness or connectors.
6
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 engine ground.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK
©
GO TO 8.
NG
©
GO TO 7.
7
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors B2, M2
I
Harness connectors M81, F49
I
Harness for open or short between EVAP control system pressure sensor and ECM
I
Harness for open or short between EVAP control system pressure sensor and TCM (Transmission Control Module)
©
Repair open circuit or short to power in harness or connectors.
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Diagnostic Procedure (Cont’d)
EC-394
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст