ASE T-Series case studies
ASE T-Series · Put your knowledge to work in context.
ASE T-Series refers to the Medium/Heavy Truck certification tests offered by the National Institute for Automotive Service Excellence (ASE), an organization that certifies automotive service professionals across the country. The T-Series is aimed at technicians who diagnose, service, and repair medium- and heavy-duty trucks - work found in dealerships, independent shops, fleets, and transit and municipal garages. The ASE T-Series case studies are 5 cases and about 4,312 words.
1Single-Cylinder Rich Misfire on a GDI Four
A 2018 sedan with a 2.4 L gasoline direct-injection four-cylinder, 96,000 miles, arrives with the MIL on, a rough idle, and a strong fuel smell after shutdown. Codes stored: P0302 and P0172.
803 words, about 4 min2DPF Load and a Differential Pressure That Does Not Add Up
A 2015 Class 3 truck with a 6.7 L diesel, 148,000 miles, runs a local delivery route: nine stops per shift, average trip 12 minutes. The driver reports low power and an exhaust-filter message.
819 words, about 4 min3Intermittent Overnight Draw on a Vehicle With Aftermarket Electronics
A 2019 SUV, 3.5 L V6, 31,000 miles, will not start about two mornings a week, always after sitting overnight. Battery: 12.62 V at rest, 660 CCA measured against a 700 CCA rating, passes a conductance test.
791 words, about 4 min4Poor Idle Cooling Plus a Side-to-Side Temperature Split
A 2017 crossover with R-1234yf and dual-zone automatic climate control, 58,000 miles. Complaint: 'It cools fine on the highway but blows warm at a stop, and the driver's side is always warmer than the passenger's side.' Ambient 35 C, high humidity.
867 words, about 4 min5Pre-Trip Inspection With a Departure Deadline and a 'Legally Required Only' Instruction
A twelve-van delivery fleet sends one 2016 van, 86,000 miles, in at 2:00 p.m. for a pre-trip inspection ahead of a 900-mile round trip departing at 6:00 a.m.
1,032 words, about 5 min