ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) case studies
ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) · Put your knowledge to work in context.
The ASE T6 Electrical/Electronic Systems credential is one of the medium/heavy truck certification tests offered by the National Institute for Automotive Service Excellence. It is intended for technicians who diagnose and repair electrical and electronic systems on medium- and heavy-duty trucks - work that spans batteries, cranking and charging circuits, lighting, instrumentation and driver information, and horn and wiper/washer systems. The ASE T6 Electrical/Electronic Systems (Medium/Heavy Truck) case studies are 5 cases and about 1,677 words.
1Intermittent No-Crank with Voltage Drop Clues
A 2018 medium-duty truck with a 12V system and a Delco 28MT starter intermittently fails to crank. The customer reports that sometimes turning the key produces a single click, and other times the engine cranks normally.
336 words, about 2 min2Battery Draw and Parasitic Drain Diagnosis
A 2020 heavy-duty truck with dual batteries (Group 31, 950 CCA each) is brought in with a complaint of dead batteries after sitting overnight. The batteries are 6 months old and test good with a conductance tester.
341 words, about 2 min3Charging System Under Load: Alternator or Wiring?
A 2019 truck with a 12V system and a 160A alternator has a complaint of dim lights and a battery that goes dead after a few days. The alternator was replaced 3 months ago.
307 words, about 2 min4Lighting System: Dim Headlamps and Voltage Drop
A 2017 truck has a complaint that the headlamps are dim, especially on the driver's side. The truck has separate halogen high and low beams.
303 words, about 2 min5Gauge Cluster Inoperative and Data Bus Diagnosis
A 2021 truck has a complaint that the speedometer and tachometer are inoperative, and several warning lamps are illuminated. The technician scans for diagnostic trouble codes (DTCs) and finds U0100 (Lost Communication with ECM/PCM) and U0155 (Lost Communication with Instrument Panel Cluster).
390 words, about 2 min