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 FTP sensor.
4. 7
   
   A normal operating FTP sensor should increase above 5 in. of H2O and Stop between 6 inches of H2O and 7 in. of H2O.
5. 9
   
   This step tests the EVAP purge valve vacuum source between the EVAP purge valve and the Intake manifold for restrictions or blockages.