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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 6. NG © GO TO 4. 4 CHECK FUEL TANK VACUUM RELIEF VALVE 1. Wipe clean valve housing. SEF427N SEF943S Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm 2 , 2.22 - 2.90 psi) Vacuum: −6.0 to −3.4 kPa (−0.061 to −0.035 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. GI MA EM LC FE CL MT AT AX SU BR ST RS BT HA SC EL IDX DTC P0440 EVAP CONTROL SYSTEM (SMALL LEAK) (NEGATIVE PRESSURE) Diagnostic Procedure (Cont’d) EC-371 |