System Inspection

■ Fuel Filler Cap Inspection 

1. Check fuel filler cap for being tightly installed, has o-ring seal installed and is in good condition.
2. Verify cap releases pressure/vacuum at specified values

   Specification:  Approx. 2 psi pressure and approximately 1.5 inches of mercury vacuum.

   Fig 1: Checking Fuel Filler Cap For Being Tightly Installed

   Courtesy of HYUNDAI MOTOR AMERICA
3. Are cap, o-ring and release pressures okay?

   YES 

   • Thoroughly check fuel filler pipe for cracks, damage and o-ring seat for deformation and replace as necessary. Go to next step below.

   NO 

   • Replace fuel filler cap and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Canister Close Valve (CCV) Line Inspection 

1. Reconnect all EVAP hardware that was previously disconnected.
2. Disconnect hose connecting Canister Closing Valve (CCV) to canister.
3. IG "ON".
4. Blow air to the canister side of the valve and verify air escapes to the air filter side.
5. Install GDS and select "CANISTER CLOSE VALVE" on the "Actuation Test" mode.
6. Activates "CANISTER CLOSE VALVE" by clicking "START" icon.
7. Blow air into hose and verify air does not escape.
8. Repeat this procedure 4 or 5 times to ensure CCV reliability.
   Fig 2: Checking Canister Close Valve Line

   Courtesy of HYUNDAI MOTOR AMERICA
9. Is CCV working properly?

   YES 

   • Go to next step below.
   • Check for cracks or damage in hose connecting CCV and canister. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • If OK, replace CCV. If CCV was stuck closed, inspect all lines and canister for liquid fuel. Replace any contaminated components and blow out lines and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Test Condition for PCSV Close Stuck 

1. Confirm that the installation arrow mark on PCSV goes towards engine
2. Disconnect hose at the PCSV coming from the fuel tank
3. Connect GDS and select "PCSV" parameter on "current data".
4. Start the engine.
5. Check for vacuum or no vacuum through the port at the PCSV in accordance with PCSV operating condition
   • Check the amount of vacuum, by hand, through the PCSV when PCSV is ON (Open)
   Fig 3: Checking Vacuum Or No Vacuum Through Port At PCSV

   Courtesy of HYUNDAI MOTOR AMERICA
6. Is the vacuum condition at the port normal?

   YES 

   • Go to "Test Condition for checking clogging of Vapor line" procedure below.

   NO 

   • 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.

■ Test Condition for checking clogging of Vapor line 

1. Remove service hall cover for Canister underneath rear seat or trunk luggage floor (Fig 4)
2. Remove Vapor line coupler
3. Connect GDS and select "PCSV" parameter on "current data".
4. Start the engine.
5. Check for vacuum or no vacuum through the coupler of vapor line in accordance with PCSV operating condition
   • Check the amount of vacuum, by hand, through the PCSV when PCSV is ON (Open)
   Fig 4: Checking Vacuum Or No Vacuum Through Coupler Of Vapor Line

   Courtesy of HYUNDAI MOTOR AMERICA
6. Is the vacuum condition of the vapor line normal?

   YES 

   • Generation of vacuum and no vacuum is smooth in accordance with PCSV operation Full amount of vacuum flow during PCSV Open.
     • Perform troubleshooting procedure with referring to P0442

   NO 

   • Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.