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On Board Diagnosis Logic
=NGEC0764
Malfunction is detected when an improper voltage signal from
EVAP control system pressure sensor is sent to ECM.
POSSIBLE CAUSE
NGEC0764S01
쐌 Harness or connectors
(The EVAP control system pressure sensor circuit is open or
shorted.)
쐌 Rubber hose to EVAP control system pressure sensor is
clogged, vent, kinked, disconnected or improper connection.
쐌 EVAP control system pressure sensor
쐌 EVAP canister vent control valve
쐌 EVAP canister purge volume control solenoid valve
쐌 EVAP canister
쐌 Rubber hose from EVAP canister vent control valve to water
separator
DTC Confirmation Procedure
NGEC0765
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch OFF and wait at least 5 seconds before
conducting the next test.
TESTING CONDITION:
Always perform test at a temperature of 5°C (41°F) or more.
SEF194Y
With CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Turn ignition switch OFF and wait at least 5 seconds.
3) Turn ignition switch ON.
4) Select “DATA MONITOR” mode with CONSULT-II.
5) Make sure that “TANK F/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-989.
With GST
Follow the procedure “With CONSULT-II”.
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
PRESSURE SENSOR
VG33E
On Board Diagnosis Logic
EC-987
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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