The class will be led through the design and operation of the modern Evaporative Emissions system. Recent system changes and additions will be covered. System operation and OBDII monitors will be discussed in detail. System testing will be stressed as will the testing of individual components. The use of diagnostic tools such as smoke machines and scanners are explained. Service bay tests and scan tool actuation modes will be thoroughly discussed. Finally, common faults, TSBs diagnostic tips and aids are shared. 

COURSE OUTLINE

1. OVERVIEW OF LATE MODEL EVAP DESIGN AND COMPONENTS
2. RECENT IMPROVEMENTS TO EVAP SYSTEMS
3. SYSTEM OPERATION
4. EVAP MONITORS
   1. WHEN DOES THE MONITOR RUN?
   2. WHEN IS THE MONITOR INHIBITED
5. SYSTEM TESTING AND FAULT ID
   1. COMPONENT TESTING
   2. SMOKE MACHINE TESTING
   3. SCAN TESTS
   4. SCAN ACTUATIONS
6. MFR SPECIFIC COMMON FAULTS AND
7. RELEVANT TSB INFO
   1. DIAGNOSTIC AIDS

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