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Which body module commonly controls modern vehicle lighting?

  • A.The engine control unit, which switches every lamp directly according to the signals from the column switches
  • B.A fuse box only
  • C.A dedicated lighting control module, which receives switch requests over the network and drives the lamps accordingly
  • D.The body control module over the vehicle network

Answer: D

A body controller reads the switches and drives the lamps through solid state outputs, often with a separate front module. Dedicated lighting modules genuinely exist on larger vehicles, which makes the last option a real architecture. Tracing the requirement back to the physical constraint that produces it makes the answer follow. The order in which the effects act is what decides the outcome, so it is worth establishing first.

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