Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

1. 2 -  This step verifies that a failure condition is active.
2. 4 -  Introducing smoke in 15 second intervals may allow smaller leak areas to be more noticeable. When the system is less pressurized, the smoke will sometimes escape in a more condensed manner.
3. 6 -  This step verifies proper operation of the Fuel Tank Pressure (FTP) sensor.
4. 7 -  A normal operating FTP sensor should increase to more than 5 in. H2O and stop between 6 in. H2O and 7 in. H2O. This step verifies proper operation of the FTP sensor.
5. 9 -  This step tests the EVAP purge solenoid vacuum source between the EVAP purge solenoid and intake manifold for restrictions or blockages.