ASE® L2 Exam Prep

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ASE Electronic Diesel Engine Diagnosis Specialist Certification Test (L2) Guide

The Automotive Service Excellence (ASE®) Electronic Diesel Engine Diagnosis Specialist (L2) Test contains 45 questions focused on the diagnosis of general diesel engine, electronic diesel engine controls, diesel engine air induction and exhaust systems, diesel fuel systems, and specific fuel systems, including electronic unit injector (EUI), pump-line-nozzle electronic (PLN-E) and hydraulic electronic unit injector (HEUI) systems.

A. General Inspection and Diagnosis (9%)
B. Electronic Engine Controls Diagnosis (60%)
C. Air Induction and Exhaust Systems Diagnosis (13%)
D. Fuel Systems Diagnosis (18%)

ASE<sup>®</sup> L2 Exam Prep

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8/10
Leaking injector tube seals are most likely to cause which of the following?
  • Engine failure
  • A rich-running engine
  • Blue exhaust smoke
  • Fuel in the exhaust stream
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ASE® L2 Cumulative Stats Recent Test Scores
82% 31% 53% 34% 91%
Average Score 64%
Exams Taken 12
September 28, 2017 at 2:57 PM 91%
September 27, 2017 at 10:17 PM 34%
September 27, 2017 at 4:29 PM 84%

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