Practice question

A school bus dash air-pressure gauge reads zero while the air system is fully charged and brakes release normally. The most likely cause is:

  1. A correctly operating gauge
  2. A faulty air-pressure sender or open gauge signal wire
  3. A discharged battery
  4. A slipping alternator belt

Answer: B — A faulty air-pressure sender or open gauge signal wire

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Practice more: ASE S6 Electrical Electronic Systems (School Bus) Practice Questions - ASE S6 - Electrical Electronic Systems (School Bus) Certification Exam →