F 350 2WD Pickup V8-460 7.5L VIN G EFI (1997)
Blower Motor Resistor: Testing and Inspection
To test the blower heater blower motor switch resistor as well as the internal thermal limiter, check continuity for shorts or opens with a self-powered test
lamp. If the unit indicates an open or short, it cannot be repaired and will require replacement.