Component Inspection

P0497 Evaporative Emission System Low Purge Flow

Inspection/Repair - 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.

CAUTION:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM.
Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others

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.