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− − − 01 SJC8A00K77100090497FAAT30 − − − − − − − − DTC P0497: Special Tools Required YES NO YES NO YES NO YES NO 11-364 EVAP System DTC Troubleshooting (cont’d) A B C EVAP System Low Purge Flow • Vacuum/pressure gauge, 0 4 in.Hg, 07JAZ-001000B • Vacuum pump/gauge, 0 30 in.Hg, Snap-on YA4000A or equivalent, commercially available NOTE: Before you troubleshoot, record all freeze data 1. Check the fuel fill cap installation (The cap label must say ‘‘Tighten to click’’. The cap should tighten Go to step 2. Properly install the fuel fill cap, then go to step 24. 2. Turn the ignition switch ON (II). 3. Clear the DTC with the HDS. 4. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS. Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals Go to step 5. 5. Check for a loose or damaged EVAP canister purge line between the intake manifold and the EVAP Go to step 6. Reconnect or repair the EVAP canister purge line, then go to step 24. 6. Disconnect the vacuum hose (A) from the EVAP canister purge valve joint (B) in the engine 30 in.Hg, to the vacuum hose as shown. 7. Select EVAP PCS ON in the INSPECTION MENU with the HDS. 8. Slowly apply about 0.6 in.Hg (15 mmHg) of vacuum to the hose. Replace the EVAP canister purge valve (see page 11-374), then go to step 23. Go to step 9. Is the f uel f ill cap installed and pr oper ly Is the r esult OK ? Is the line OK ? Does it hold vacuum? |