User's Manual

Diagnostics Operations Diagnosis
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4.6.5 Active Test
The Active Test function is used to access vehicle-specific subsystem and
component tests. Available test vary by manufacturer, year, and model, and
only the available tests display in the menu.
During an active test, the tester outputs commands to the ECU in order to
drive the actuators. This test determines the integrity of the system or parts by
reading the engine ECU data, or by monitoring the operation of the actuators,
such as switching a solenoid, relay, or switch, between two operating states.
Selecting Active Test opens a menu of test options that varies by make and
model. Selecting a menu option activates the test. Follow all screen
instructions while performing tests. How and what information is presented on
the screen varies according to the type of test being performed. Some toggle
and variable control tests display Active Test Controls at the top of the screen
with data stream information below, or vice versa.
Figure 4-13 Sample Active Test Screen
The functional buttons at the lower right corner of the Active Test screen
manipulate the test signals. The operational instructions are displayed on the
main section of the test screen. Simply follow the on-screen instructions and
make appropriate selections to complete the tests. Each time when an
operation is successfully executed, message such as “Command Finished”,
“Activation Successful”, or something similar displays.
Tap the ESC functional button to exit the test when finished.