Typical Malfunction Thresholds

"Saturated" indicates that the EVAP pressure change is less than 0.75 mmHg (0.1 kPa) in 30 seconds.

1. Purge VSV stuck open
   TYPICAL MALFUNCTION THRESHOLDS
   
   

   FTP when vacuum introduction complete

   Higher than reference pressure x 0.2

2. Purge VSV stuck closed
   TYPICAL MALFUNCTION THRESHOLDS
   
   

   FTP change for 10 seconds after purge VSV ON (open)

   Less than 2.25 mmHg (0.3 kPa)