The charging system of a vehicle is producing 100 amps and 12.4 volts at 1500 RPM with all electrical accessories turned "on." The charging system output specification for this vehicle is 110 amps. Technician A says the alternator needs to be replaced. Technician B says the electrical demand of the vehicle may be exceeding the capacity of the charging system. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question

Quizplus · Accepted Answer

Since the charging system output is lower than the charging system output specification, it's unlikely that the alternator needs to be replaced. Technician B's explanation is more likely since turning on all electrical accessories may exceed the capacity of the charging system to meet the demands, causing it to output less than the specified amperage.

The Charging System of a Vehicle Is Producing 100 Amps