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On Board Diagnosis Logic
NGEC1032
This diagnosis detects very small leaks in the EVAP line between
the fuel tank and the EVAP canister purge volume control solenoid
valve using intake manifold vacuum in the same way as conven-
tional EVAP small leak diagnosis.
If the ECM judges a leak equivalent to a very small leak, the very
small leak DTC P1441 will be detected. If the ECM judges a leak
equivalent to a small leak, the EVAP small leak DTC P0440 will be
detected. Correspondingly, if the ECM judges there is no leak, the
diagnosis result is OK.
SEF865Z
Malfunction is detected when EVAP control system has a very
small leak, EVAP control system does not operate properly.
CAUTION:
쐌 Use only a genuine NISSAN fuel filler cap as a replace-
ment. If an incorrect fuel filler cap is used, the MIL may
come on.
쐌 If the fuel filler cap is not tightened properly, the MIL may
come on.
쐌 Use only a genuine NISSAN rubber tube as a replacement.
Possible Cause
NGEC1033
쐌 Incorrect fuel tank vacuum relief valve
쐌 Incorrect fuel filler cap used
쐌 Fuel filler cap remains open or fails to close.
쐌 Foreign matter caught in fuel filler cap.
쐌 Leak is in line between intake manifold and EVAP canister
purge volume control solenoid valve.
쐌 Foreign matter caught in EVAP canister vent control valve.
쐌 EVAP canister or fuel tank leaks
쐌 EVAP purge line (pipe and rubber tube) leaks
DTC P1441 EVAP CONTROL SYSTEM (VERY SMALL LEAK)
KA24DE
On Board Diagnosis Logic
EC-476
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