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Which fault does a blocked aspirator duct produce?

  • A.An inaccurate interior reading, so the climate control overheats or overcools the cabin against the set temperature
  • B.The system reads the cabin as cooler or warmer than it is
  • C.No fault, since the sensor measures the air surrounding it whether or not the duct is drawing air past it
  • D.The blower stops

Answer: B

Without airflow the sensor reads its own surroundings rather than the cabin. The last option states the consequence, which makes it a correct and more practical version of the same answer. Naming what changes and what stays the same is the reliable route through questions of this shape. Tracing the requirement back to the physical constraint that produces it makes the answer follow. The shared properties explain why these belong to one family, and the differences explain why more than one exists.

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