ASE XEV2 case studies
ASE XEV2 · Put your knowledge to work in context.
ASE xEV Safety Testing is one of the certification testing programs offered by the National Institute for Automotive Service Excellence (ASE) and is listed on ase.com under Certification Tests alongside the ASE Certification Test Series, the Refrigerant Recovery and Recycling 609 Program, and Military Testing. The credential is aimed at service professionals who work on or around electrified vehicles - hybrid, plug-in hybrid, and battery-electric - and who need to demonstrate verified knowledge of high-voltage safety rather than vehicle-specific repair procedures. The ASE XEV2 case studies are 5 cases and about 2,909 words.
1800 V Pack Service: Gloves, Meter, and Arc-Rated Clothing
An 800 V-class BEV is in for a high-voltage cable inspection. The pack is nominal 640 V and service information lists a maximum pack voltage of 720 V DC.
655 words, about 3 min2Module 7 at 3.05 V: Replace the Module or the Pack?
A 2018 PHEV with a 96S lithium-ion pack (355 V nominal, 60 Ah, 17.6 kWh) comes in with range down from 35 to 22 miles and DTC P0AFA. At 62% indicated SOC after a two-hour rest, the scan tool shows cells 73-78 at 3.05 V while all other modules read 3.78-3.82 V.
605 words, about 3 min3Inverter Discharge and a P0A3F Under Load
A 400 V BEV has a P0A3F inverter performance DTC and a dead 12 V battery. The inverter DC-link capacitor is 1200 microfarad.
582 words, about 3 min4Level 2 Charge Stops After 40 Minutes
A 2022 EV with a 77 kWh pack and 11 kW onboard charger intermittently stops charging at home after about 40 minutes. The customer's EVSE is on a 40 A breaker with 6 AWG conductors and a 25 ft run; the EVSE pilot indicates 32 A available.
539 words, about 3 min50.00 V Between Rails With a Live Pack Terminal
A 2020 PHEV with a 355 V pack is in for HV battery removal. The technician removes the service disconnect, turns off the 12 V system, and waits 10 minutes.
528 words, about 3 min