In diagnosing a power antenna system, Technician A states that a broken plastic cable in the antenna housing requires replacement of the power antenna assembly. Technician B states that a power antenna motor that shows no continuity must be replaced. Who is right?

• A. A only
• B. B only
• C. Both A and B
• D. Neither A nor B

Answer: (B)

In diagnosing a power antenna, the first thing to check is the motor’s electrical condition. The motor is what actually drives the mast, so if you measure no continuity across the motor terminals (an open circuit), the windings are likely burned or broken and the motor has failed. In that case, replacing the motor is the proper fix.

A broken plastic cable inside the antenna housing is a mechanical issue that can prevent movement, but it does not automatically mean the entire power antenna assembly must be replaced. Depending on the design, the cable or linkage may be serviceable or replaceable without swapping the whole unit. So the electrical fault driving a no-continuity reading points to replacing the motor, while a damaged cable alone isn’t a definitive reason to replace the entire assembly.