Practice question What do ABS warning lamps indicate? That low-air warning is replacedThat every brake is adjustedABS status and ABS malfunctionsThat air-loss rate is within limits Answer: C — ABS status and ABS malfunctions The correct answer is shown above. Try the full quiz for additional practice. Practice more: Ontario Air Brake Z Test Practice Questions - Ontario Air Brake (Z Endorsement) Knowledge Test Exam →