Component Inspection

Engine

Engine Control - P0497 Evaporative Emission System Low Purge Flow - Component Inspection

Component Inspection

1. Visual Inspection
(1) Check poor connection, bending or clog on hoses for the fuel evaporative system.
(2) Has a problem been found?
YES
1) Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
1) Go to "Check PCSV" procedure.
2. Check PCSV
(1) Disconnect a hose between a surge tank and PCSV. (Surge tank side only)
(2) Connect a vacuum gauge to a hose, and apply vacuum.
(3) Is it possible to make vacuum?
YES
1) Go to "Check PCM" procedure.
NO
1) Substitute with a known-good PCSV and check for proper operation. If the problem is corrected, replace PCSV and then go to "Verification of Vehicle Repair" procedure.
3. Check PCM
(1) Connect scantool on the DLC (Data Link Connector)
(2) Perform Action Test for Canister Vent Solenoid Valve with scantool
(3) Check clicking sound of PCSV.




(4) Is the PCSV normal?
YES
1) Substitute with a known-good PCM and check for proper operation. If the problem is corrected, replace PCM and then go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known-good PCSV and check for proper operation. If the problem is corrected, replace PCSV and then go to "Verification of Vehicle Repair" procedure.