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Medium Heavy Diesel Automotive Technician

Diesel Technician trainingProgram Duration: 6 Months
Course Contact Hours: 450
Student Tuition: $3,999.99

Our Medium/Heavy Diesel Automotive Technician three-part program deals with industry trends and current technology to supply a thorough overview of highway diesel engines and their management. This Diesel Technician training readies entry-level and experienced technicians alike for a prosperous career as a Medium/Heavy Diesel Automotive Technician by describing the duty of the truck technician, industry tools and requirements for safety, and measures for diagnosing and servicing a total range of diesel engines. Learn the required knowledge to gain employment in the automotive industry with up-to-date material including the principles and practices underlying present and proposed ASE and NATEF tasks and the most current diesel engine management electronics employed in the industry. This series provides everything a student must know to diagnose, service, and maintain diesel engine systems.

After completing this diesel technician training program, you will be able to:

  • Understand the role of the truck technician and standards for workplace safety.
  • Comprehend parts of the engine and their function.
  • Recognize parts of the engine powertrain, feedback assembly, and housing.
  • Recognize steps for servicing engine lubrication, breathing, and cooling systems.
  • Identify the steps for removing, cleaning, testing, and reassembling engines.


Upon successful completion of the Medium/Heavy Diesel Automotive Technology three course series, students will be prepared to sit for the Automotive Service Excellence (ASE) national certification exam to become a Certified Medium/Heavy Truck Automotive Technician.

**Certification exams are not included in the cost of the course.**


Medium / Heavy Diesel Automotive Technician Level 1 Module 1
Role of the Truck Technician, Tools, and Safety

  • Truck Technician of 21st Century
  • Training and the Truck Technician
  • Customer Service and Professionalism
  • Professional Associations
  • Hand and Shop Tools
  • Precision Tools
  • Units of Measurement
  • Metric System
  • Workplace Organization
  • Personal and Safety Awareness
  • Safety Equipment
  • Workplace Hazards and Safety Regulations
Read Full Course Outline
Medium / Heavy Diesel Automotive Technician Level 1 Module 2
Overview of the Engine

  •  Engine Basics
  • Key Engine Terms
  • Diesel Cycle
  • Two-Stroke Cycle Diesel Engine
  • Otto Cycle
  • Engine Systems and Circuits
  • History of the Modern Diesel Engine
  • Power
  • efinitions and Formulae
  • Engine Configuration
  • Engine Speed
  • Torsional Forces

Medium / Heavy Diesel Automotive Technician Level 1 Module 3
Engine Powertrain and Housing

  • Piston Assemblies
  • Piston Rings
  • Connecting Rods
  • Crankshaft and Bearings
  • Rod and Main Bearings
  • Engine Feedback Assembly
  • Timing Gears
  • Camshafts
  • Valve and Injector Trains
  • Engine Cylinder Block
  • Cylinder Heads
  • Intake and Exhaust Manifolds

Medium / Heavy Diesel Automotive Technician Level 1 Module 4
Engine Lubrication and Cooling Systems

  • Engine Lubricating Oil
  • Lubrication System Components
  • Interpreting Oil Analyses
  • Lubricating Circuit Problems
  • Engine Coolant
  • Cooling System Components
  • Filters
  • Cooling Monitoring Circuit
  • Thermostats
  • Cooling Fans
  • Cooling System Management
  • Coolant Heaters

Medium / Heavy Diesel Automotive Technician Level 1 Module 5
Engine Breathing, Retarders, and Maintenance

  • Breathing Components
  • Air Intake System Components
  • Turbochargers
  • Charge Air Heat Exchangers
  • Exhaust Gas Recirculation
  • Principles of Engine Retarder Operation
  • Exhaust Brakes
  • Internal Compression Brakes
  • Start-Up and Engine Break-Ins
  • Air Intake System Maintenance
  • Engine Lube Service
  • Diesel Particulate Filter Service

Medium / Heavy Diesel Automotive Technician Level 1 Module 6
Engine Removal, Assembly, and Performance Testing

  • Engine Disassembly
  • Cleaning Components
  • Component Inspection
  • Reassembly Guidelines
  • Service Literature
  • Removing an Engine
  • Diesel Engine Run-In
  • Rebuilt Engine Run-In Procedure
  • Chassis Dynamometer Testing
  • Engine Dynamometer Testing
  • Road Testing

Medium / Heavy Diesel Automotive Technician Level 2 Module 1
Diesel Fuel Characteristics and Subsystems

  • Chemistry and Combustion
  • Properties of Common Elements
  • Properties of Mixtures and Compounds
  • Combustion Cycle in Diesel Engine
  • Fuel Terminology
  • Petroleum
  • Fuel Storage, Deterioration, Performance
  • Fuel Subsystem Objectives
  • Fuel Tanks
  • Fuel Filters
  • Fuel Charging/Transfer Pumps
  • Complete Fuel Circuit

Medium / Heavy Diesel Automotive Technician Level 2 Module 2
Diesel Fuel Injection

  • Governor Principles
  • Delivery, Injection, and Combustion
  • Governing Objectives
  • Injector Nozzles
  • Single and Multiple Orifice Nozzles
  • Nozzle Troubleshooting
  • Port-Helix Metering Injection Pumps
  • Injection Pump Components
  • Governor Trim Devices
  • Timing Injection Pumps to Engine
  • Phasing and Calibration
  • Electronic Port-Helix Metering

Medium / Heavy Diesel Automotive Technician Level 2 Module 3
Rotary Distributor Pumps

  • Inlet-Metering Rotary Distributor Pumps
  • Roosa Master
  • Opposed-Plunger, Inlet-Metering Injection Pumps
  • Sleeve-Metering Rotary Distributor Pumps
  • Sleeve-Metering, Single Plunger Distributor Pumps
  • VE Pump Electronic Controls

Medium / Heavy Diesel Automotive Technician Level 2 Module 4
EUI Systems

  • Single-Actuator EUI Systems
  • ECM
  • EUI Operations
  • Calibration Codes
  • Understanding IRT
  • Multiple Injection Events
  • Dual Actuator EUI Systems
  • Input Circuit
  • Output Circuit
  • Management Electronics
  • Installation of Delphi E3 EUI
  • Bench Testing E3 Injectors

Medium / Heavy Diesel Automotive Technician Level 2 Module 5
Electronic Unit Pump Systems

  • Caterpillar and Navistar HEUI
  • Principles of Operation
  • Fuel Supply System
  • Injection Actuation System
  • HEUI Injector
  • HEUI Electronic Management
  • HEUI Diagnostics
  • Fuel Subsystem
  • Input Circuit
  • Engine Controllers
  • Management Electronics
  • Cummins HPI-TP

Medium / Heavy Diesel Automotive Technician Level 2 Module 6
Common Rail Systems

  • CR Subsystems and Components
  • CR Management Electronics
  • CR Fuel Routing Circuit
  • Diagnosing CR System Problems
  • Amplified Common Rail Systems
  • ACRS Applications and Generations
  • ACRS Circuit Layout
  • ACRS Service Procedures

Medium / Heavy Diesel Automotive Technician Level 3 Module 1
Electronic and Computer Systems

  •  Atomic Structure and Electronic Movement
  • Electromagnetism
  • Electrical Circuits and Ohm’s Law
  • Coils and Transformers
  • Diodes
  • Networking
  • Communications
  • Telematics
  • Input Circuit
  • ECMs and the Processing Cycle
  • ECM Programming
  • Engine Management Systems

Medium / Heavy Diesel Automotive Technician Level 3 Module 2
Electrical Wiring and Multiplexing

  • ESTs and SISs
  • Digital Multimeters
  • Electronic Troubleshooting
  • Data Bus Codes and Protocols
  • Electrical Wiring
  • Connector and Terminal Repair
  • SAE Wiring Standards
  • Splicing Guidelines
  • Multiplexing
  • Clients and Servers
  • Assessing the Data Bus
  • Diagnosing Bus Faults

Medium / Heavy Diesel Automotive Technician Level 3 Module 3
Biodiesel and Hybrids

  • Fuel Alternatives for Engines
  • Natural Gases
  • Liquefied Petroleum Gas
  • Alcohol-Based Fuels (Methane/Ethanol)
  • Electric Drives
  • Hydraulic Hybrid Drives
  • Batteries and Ultracapacitors
  • Fuel Cells
  • Hybrid Electric Vehicles
  • Bosch EDC Systems
  • Bosch Diesel Systems
  • EDC Management

Medium / Heavy Diesel Automotive Technician Level 3 Module 4
Management and Electronic Control Systems

  • Caterpillar Engine Management Systems
  • ADEM Electronics
  • Cummins Management Systems
  • Input Circuit
  • Electronic Control Module (ECM)
  • Detroit Diesel Electronic Controls (DDEC)
  • Emissions Management
  • Governor Options
  • DDEC Features
  • Navistar Diamond Logic
  • Diamond Logic Controls

Medium / Heavy Diesel Automotive Technician Level 3 Module 5
Engine and Emissions Management

  • Paccar Engine Management
  • System Diagnostics and Communications
  • Volvo and Mack Engine Management
  • V-MAC and VECTRO Electronics
  • Pollutants
  • EPA Certification Testing
  • Diesel Engine Emissions Controls
  • Diesel Particulate Filters (DPFs)
  • Selective Catalytic Reduction (SCR)

Medium / Heavy Diesel Automotive Technician Level 3 Module 6
Exhaust Aftertreatment and Troubleshooting

  • Visible Smoke Emission: Legacy Engines
  • Exhaust Gas Recirculation Systems
  • Field Testing of Smoke Density
  • Failure Analysis
  • Principles of Failure Analysis
  • Component Failures
  • Common Abuses of Engines and Fuel Systems
  • Troubleshooting Tools
  • Smoke Analysis
  • Troubleshooting Guidelines
  • Quick Reference Diagnostic Charts
  • Technical Support

Required Materials:

Materials Included:

  • Medium/Heavy Duty Truck Engines, Fuel & Computerized Management Systems by Sean Bennett

System Requirements:

Internet Access

  • Broadband or high-speed internet access is strongly recommended. Broadband includes DSL, cable, and wireless connections.
  • Dial-Up internet connections will result in a diminished online experience. Moodle pages may load slowly and viewing large audio and video files may not be possible.


  • Virtually all Windows-Mac hardware configurations and processors are acceptable.
  • 1 GB RAM recommended
  • Software
  • Operating Systems
  • Windows XP or Vista and Mac OS X 10 and higher
  • Web Browsers
  • Mozilla Firefox 2 and 3 (previous versions will work also) o Internet Explorer 6, 7 and 8 o Safari is not currently recommended as it cannot display certain Moodle editing menus for both students and instructors
  • Media Plug-ins (These may be required depending on your course media-click on the links below to download the latest versions)
  • Adobe Flash Player
  • Adobe Acrobat Reader
  • Apple Quicktime
  • Windows Media Player
  • Real Player
  • PowerPoint Viewer (use this if you don’t have PowerPoint)