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I If the fuel filler cap is not tightened properly, the MIL may come on.
I Use only a genuine NISSAN rubber tube as a replacement.
SEC764C
SEC765C
SEC766C
DTC Confirmation Procedure
NFEC1480
CAUTION:
Never remove fuel filler cap during the DTC confirmation pro-
cedure.
NOTE:
I If DTC P1456 is displayed with P0442, perform TROUBLE
DIAGNOSIS FOR DTC P1456 first.
I If “DTC Confirmation Procedure” has been previously
conducted, always turn ignition switch “OFF” and wait at least
10 seconds before conducting the next test.
I After repair, make sure that the hoses and clips are
installed properly.
TESTING CONDITION:
I Open engine hood before conducting following proce-
dure.
I If any of following conditions are met just before the DTC
confirmation procedure, leave the vehicle for more than 1
hour.
a) Fuel filler cap is removed.
b) Refilled or drained the fuel.
c) EVAP component parts is/are removed.
I Before performing the following procedure, confirm that
battery voltage is more than 11V at idle.
With CONSULT-II
1) Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.
2) Make sure the following conditions are met.
FUEL LEVEL SE: 1.08 - 0.2V
COOLAN TEMP/S: 0 - 32°C (32 - 90°F)
FUEL T/TMP SE: 0 - 35°C (32 - 95°F)
INT A/TEMP SE: More than 0°C (32°F)
If NG, turn ignition switch “OFF” and leave the vehicle in a cool
place (soak the vehicle) or refilling/draining fuel until the out-
put voltage condition of the “FUELLEVELSE” meets within the
range above and leave the vehicle for more than 1 hour. Then
start from step 1).
3) Turn ignition switch “OFF” and wait at least 10 seconds.
4) Turn ignition switch “ON”.
5) Select “EVP V/S LEAK P0456/P1456” of “EVAPORATIVE
SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-
II.
Follow the instruction displayed.
6) Make sure that “OK” is displayed.
If “NG” is displayed, refer to “Diagnostic Procedure”, EC-606.
DTC P1456 EVAP CONTROL SYSTEM
On Board Diagnosis Logic (Cont’d)
EC-604
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