The customer says that there is no heat in the passenger compartment. Technician A says a disconnected engine vacuum hose could not cause the problem. Technician B says a seized blend door could cause the problem. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician B is correct because a seized blend door can prevent the proper mixing of hot and cold air, leading to no heat in the passenger compartment. A disconnected engine vacuum hose is more likely to affect engine performance rather than the heating system directly.

The Customer Says That There Is No Heat in the Passenger