ASE S1 Body Systems & Special Equipment (School Bus) case studies
ASE S1 Body Systems & Special Equipment (School Bus) · Put your knowledge to work in context.
The ASE S1 certification, officially titled Body Systems & Special Equipment for school buses, is a specialty credential within the ASE School Bus technician testing series. It is aimed at technicians who maintain and repair the body, accessories, electrical, HVAC, and safety systems unique to school buses rather than the chassis and powertrain covered by other tests. The ASE S1 Body Systems & Special Equipment (School Bus) case studies are 5 cases and about 1,904 words.
1Stop Arm Interlock and Door Switch Diagnosis
A 2019 conventional school bus reports that the stop arm extends normally but the red warning lamps do not flash, and the driver says the bus occasionally will not start after dropping students. During inspection you find the stop arm deploys when the passenger door opens, but the warning lamps only flash if you press the door switch by hand.
424 words, about 2 min2Heater Core Coolant Loss and Defrost Performance
A rear-engine transit-style school bus used on a rural route has complaints of weak defrost on the driver's side and a faint sweet smell in the cabin. The coolant reservoir has dropped about 1 quart over two weeks with no visible external leak.
383 words, about 2 min3Emergency Exit Buzzer and Rear Door Latch Adjustment
A 2015 Type C school bus fails a pre-trip inspection because the rear emergency door buzzer sounds continuously while driving, and the door does not latch flush at the top corner. The driver reports the buzzer started after a substitute driver slammed the door.
396 words, about 2 min412-Volt Accessory Circuit Voltage Drop on a School Bus
A school bus has a complaint that the amber warning lamps are dim and the stop-arm lamps flicker when the engine idles. The bus has a 200-amp alternator and dual batteries.
341 words, about 2 min5Wheelchair Lift Interlock and Door Ajar Fault
A bus equipped with a wheelchair lift reports that the lift will not deploy. The lift is powered from the body electrical system and has an interlock that prevents deployment unless the parking brake is set and the transmission is in park.
360 words, about 2 min