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2 CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened properly by rotating the cap clockwise.
OK or NG
OK © GO TO 3.
NG © I Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
I Retighten until ratcheting sound is heard.
3 CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
OK or NG
OK © GO TO 5.
NG © GO TO 4.
4 CHECK FUEL TANK VACUUM RELIEF VALVE
1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
SEF445Y
SEF943S
Pressure:
15.3 - 20.0 kPa (0.156 - 0.204 kg/cm
2
, 2.22 - 2.90 psi)
Vacuum:
−6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm
2
, −0.87 to −0.48 psi)
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.
OK or NG
OK © GO TO 5.
NG © Replace fuel filler cap with a genuine one.
DTC P0456 EVAP CONTROL SYSTEM
Diagnostic Procedure (Cont’d)
EC-420
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