After connecting a DSO to an electrical circuit in the engine compartment of a vehicle, a technician discovers that there is no visible trace on the screen. What types of problems could cause this?...

After connecting a DSO to an electrical circuit in the engine compartment of a vehicle, a technician discovers that there is no visible trace on the screen. What types of problems could cause this?

Which of the following diagnostic tools is designed to help the technician quickly identify the area of a fault?

A. A scan tool

B. A DVOM

C. A DSO

D. Both B and C