Operation Manual

4.9 EVAP System Test
The EVAP test function lets you initiate a leak test for the vehicle's EVAP
system. The OBD BOOK does not perform the leak test, but signals to
vehicle's on-board computer to initiate the test. Before using the system
test function, refer to the vehicle's service repair manual to determine the
procedures necessary to stop the test.
1) Use the UP/DOWN scroll button to select EVAP System Test from Diagnostic
Menu and press ENTER.
2) Wait a few seconds while the scan tool validates the PID MAP.
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● Some vehicles do not allow scan tools to control vehicle systems or
comp onents. If the vehicle under test does not support the EVAP System
Test, an advisory message is displayed on the screen.
3) Press any key to return to Diagnostic Menu.