Practice question

A booster (auxiliary) coolant pump runs continuously and never cycles off, draining the battery overnight. What should be checked?

  1. The pump control relay, thermostatic/timer control, and ignition switching of the pump circuit
  2. The stop-arm flasher
  3. The wheelchair ramp hinge
  4. The seat upholstery

Answer: A — The pump control relay, thermostatic/timer control, and ignition switching of the pump circuit

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