An engine failed because it was overheated. Technician A says that a coolant temperature sensor could be defective. Technician B says that the fan relay could be defective. Who is right?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Both Technician A and Technician B are correct. A defective coolant temperature sensor can fail to signal the engine control unit to turn on the cooling fan, leading to overheating. Similarly, a defective fan relay can prevent the fan from operating, also causing the engine to overheat.

An Engine Failed Because It Was Overheated