EVAP System Test With Vehicle Diagnostic Tester

For Vehicles With LDP:

-- Perform leak test using Vehicle Diagnostic Tester and "Basic Setting" mode.

If Vehicle Fails Above Test (System Not OK):

-- Verify Fuel Cap Is Properly Closed And Repeat Test.

If System OK After Repeat Test:

-- Erase Diagnostic Trouble Code (DTC) memory (if necessary).

-- Repeat test several times to ensure proper EVAP system operation. Remove and reinstall fuel cap before each test

-- Perform quality check and return vehicle to customer.

NOTE:

If the vehicle passes the above EVAP system test, DTC may be sporadic; the entire EVAP system should be carefully inspected.

If the Vehicle Diagnostic Tester continues to indicate "System not OK" after repeat test, proceed to next step.