Power injection, measuring, ground testing, polarity checking, continuity testing and component activation

Read the AVO meter, voltage, current, and resistance

Energize the electrical components, such as the cooling fan, relay etc.

Activate the components

Determine the positive, negative and open circuit

Test the bad ground contacts, follow and locate short circuits without wasting the fuse

Test the continuity of the power switch, relay and diode

Protect the tool from overload

Allow you to work in the dark area by using the built-in head light

Test along the vehicle by the long cable