Course Descriptions

DENSO offers technical training seminars proven to help develop your diagnostic and troubleshooting skills. You'll receive real world training from highly experienced ASE Master Certified instructors who provide tips on how to increase efficiency and profits by reducing diagnostic time.

DENSO master classes are held in different locations across the country and hosted by our partners. Don’t miss the opportunity to establish, expand and refine your automotive career or business. Meals and class support materials are all included.

For details on cost and registration, please see the information flyer for each course listed in the Course Schedule.

This class is about using wiring diagrams as part of a larger strategy to increase testing accuracy and decrease testing time (and even the number of tests performed). We’re combining wiring information with codes, symptoms, system interactions, Scan Tool PIDs & controls, and other observations. Without having tested a single circuit you’ll be able to: 

  • Classify the fault (open, short to ground, short to power, short to circuit, resistance faults, etc.)
  • Trace series & parallel current paths through diagrams for every operating condition
  • Cross off whole sections of the wiring diagram that can’t be the cause
  • Select fast and simple tests appropriate for the conditions and for the classification

DENSO's all-new Air Conditioning Training seminar A/C Operation, Performance & Diagnostics provides a complete look at automotive air conditioning, and is full of real world examples and case studies to help each attendee apply the information back in the shop.

The ‘Why?’ Behind the Facts:

Laying out facts in sequence is easier, but it isn't better.  Technical facts simply don’t directly translate into real world skills. No single air conditioning component exists for its own sake, which is why it is so hard to apply traditional component-based training back in the shop. This seminar takes a completely different approach by layering the lessons, nesting each new fact in the context of how it participates in the system:

·      Establishing how all the components work together as a system.

·      Defining the categories of components required to make the complete system function.

·      Discovering the variations of each component category that are used by various manufacturers.

·      Reinforcing the ideas through actual diagnostic examples.

Using the Facts:

Back in the shop, the diagnosis of any air conditioning fault follows the same general-to-specific path as the seminar. For this purpose, we have included many high level tables where each diagnosis should begin. These tables help each technician compare a symptom or code to the most likely causes. The Denso diagnostic strategy then aids in deciding how to eliminate the most possible causes with the least effort. Then all that is left is to directly test the small number of remaining possible causes, making this the most efficient way to service and diagnose any automotive air conditioning system.

Specific Topics:

·      Systemic pressure & temperature analysis

·      Pressure & temperature feedback loops

·      Compressors, including variable displacement and controls

·      Evaporators & condensers

·      Pressure drop devices, including fixed orifice, thermal expansion, orifice tube, etc.

·      Airflow controls (i.e. instrument panels doors and controls)

·      Blowers & fans

·      Recovery, pressure testing & leak detection equipment

·      Refrigerant & lubrication types, identification & warnings

·      Service & repair best practices    

This seminar brings practical and real-world tests to quickly isolate a root cause for drivability and trouble code faults on Domestic, Asian & European gasoline engines. Traditional diagnostics tell us to ‘check the basics’, but that means hours of compression, vacuum, fuel pressure/volume and other time-consuming tests. So we’ve developed top-down tests for engine mechanical and engine management that help you drill down along the most effective diagnostic path. We’ll show you the latest ‘geeky’ tools like transducers and processed Scan Tool functions, but we’ll also include great ways to get results using the Scan Tools and traditional test equipment you already own.

Most technicians have been using the Scan Tool for years for more than just pulling codes, but very few get the full potential out of this very powerful tool. In this class you will learn what Scan Tools can and cannot do and get tips for diagnosing certain faults without OEM Scan Tools:

Topics include:
  • Engine breathing tests, including Volumetric Efficiency, VE mapping & crankcase pressure
  • Engine fueling tests, including Fuel Trim by condition, Rear Fuel Trim, and VE relationships
  • Simplified cylinder contribution & misfire detection strategies and root-cause analysis

This seminar covers the testing procedures for manufacturer specific systems and components. This new manual & seminar goes deeper into the test equipment instead, so there’s more time to discuss emerging tools & techniques in voltage and current testing. One of the greatest features of the manual and seminar is a thorough explanation of voltage, resistance, and current test strengths and weaknesses for each low current (sensor) and high current (actuator). While we show a variety of tests so you have the flexibility, we focus on the one that makes the most sense for each type of circuit.

As usual, that’s the test that gives you the most information for the least effort. So you’ll not only pick up some new testing techniques, but you’ll always know the most efficient test to perform first during each diagnosis. Diagnostic time will drop as accuracy increases!

New to Lab Scopes? The manual is great for the technician that has a dusty Lab Scope not quite sure how to get started. Lab Scope time and voltage settings, trigger, slope and coupling are all covered, as well as specific circuit connection tools, techniques and rules.

Advanced User? Even the most experienced Lab Scope users will benefit from the cool tricks we’ve gathered from the field, as well as some we’ve developed in-house. We’ll show the logic behind some great time-saving combination tests and back that up with examples from actual repairs.

Specific topics discusses include:

  • Hand held and PC-based Lab Scopes
  • Little used high side & ground voltage drop waveforms
  • Mechanical analysis using voltage & current waveforms
  • Detailed pressure/vacuum transducer explanations & examples
  • When the Graphing Multimeter function is a better alternative
  • Current probe testing strategies
  • Available minimally-invasive circuit connection tools
  • The best test setup for the specific weaknesses of each component

Diesel engines are very simple – just compress some air and fuel and you get combustion. But with the advent of common rail fuel pressurization and delivery systems, diagnosis and repair became a complicated and time-consuming game. Add variable vane/nozzle turbochargers, feedback EGR systems, and exhaust after treatment systems like Diesel Particulate Filters, Selective Catalyst Reduction, and Diesel Exhaust Fluid injection, and it’s hard to know where to start. System, code, and system diagnosis covered includes:

 Finding elusive Cummins internal fuel leaks

 Modifications & retrofits that make sense

 Tips for getting DPFs to regenerate

 Help for stuck DEF messages and codes

 Easy tests for injector ball faults

 Simplified no-start & hard-start diagnostics

 Great tests for low power complaints

 Turbo issues & diagnosis

Other published Cummins repair information is inconsistent, and many of the flow charts run you in circles performing tests that would take days. In contrast, our approach looks for high-level indicators to make a better possible-cause list, and then offers multiple simple tests to trim that list as fast as possible without taking too much apart. Cummins engine management and emissions systems are each comprehensively covered, including special tools, workarounds, unused Scan Tool functions, and other great shortcuts. From a simple high-level pass to system-specific tips, this seminar covers the entire diagnostic process. We have included real-world examples to prove that these strategies will find the root cause of your code or symptom in the shortest amount of time. 

This all-new Chrysler training seminar is the latest installment in our Engine Performance series, and continues the evolution of our products from a systems-based layout to a diagnostics-based layout. Because of the new format, today’s more complex symptoms and codes become easier to understand in the classroom and far easier to diagnose back in the shop. This approach applies to new and legacy engine management systems, so it will change the way you approach any Chrysler vehicle. This seminar and manual were built by analyzing actual diagnostic struggles and documenting the shortest diagnostic paths for engine management and emissions systems.

Coverage includes:

 High level indicators for all drivability fault categories

 Multiple timing tests without disassembly

 New low compression, low vacuum strategies

 Fuel Trim diagnostic tips to avoid being mislead

 Nailing Rear Fuel Trim faults

 The new Air/Fuel Sensor (AFS)

 O2 sensor bias variations & diagnostic traps

 Chrysler-specific MAP and vacuum fault reactions

 Tips for finding the root cause of misleading CMP & CKP sensor codes

 PCM driver faults and repeat component failures

 Simpler methods for diagnosing codes on LDP, ESIM, and NVLD EVAP systems

Chrysler, Dodge, Jeep & Fiat applications have a tremendous number of no-starts, stalling complaints, misfiring, and trouble codes that really mean something else. This seminar focuses on the best practices to give you victory over these faults, so it’s a great investment in your career.

Diesel engines are very simple – just compress some air and fuel and you get combustion. However, with the advent of common rail fuel pressurization and delivery systems, diagnosis and repair became a complicated and time-consuming game. Add variable vane turbochargers, feedback EGR systems, and exhaust after treatment systems like Diesel Particulate Filters, Selective Catalyst Reduction, and Diesel Exhaust Fluid injection, and it’s hard to know where to start. System, code, and system diagnosis covered in this seminar includes:

 Finding elusive internal fuel leaks

 Great vacuum-side fuel system tests

 Common mechanical issues

 Modifications & retrofits that make sense

 Tips for getting DPFs to regenerate

 Help for stuck DEF messages and codes

 New pressurized fuel return

 Simplified no-start & hard-start diagnostics

 Variable Vane Turbo issues & diagnosis

Other published Duramax repair information is inconsistent, and many of the flow charts run you in circles performing tests that would actually take days to complete. In contrast, our approach looks for high-level indicators to make a better possible-cause list and then offers multiple simple tests to trim that list as quickly as possible without taking too much apart. Duramax coverage includes special tools, workarounds, unused Scan Tool functions, and other great shortcuts for ruling out time-consuming tests. From a simple high-level pass to system-specific tips, this seminar covers the entire diagnostic process. We have included dozens of real-world examples to prove that these strategies will find the root cause of your code or symptom in the shortest amount of time.

More and more GM Duramax 6.6 liter Engines are coming into repair shops with an Engine Performance issue or Check Engine (C/E) Light "ON". Come to this class and get the training and information you need to quickly and correctly diagnose and repair the five generations of this engine:

  • Unique Duramax Systems & Components
  • Intake Air Heater
  • New Exhaust Particulate Filter & Service
  • Glow Plug Systems
  • High and Low Pressure Fuel Supply Systems
  • Fuel Injector Diagnosis
  • Common Rail Fuel Injection System
  • Variable Geometry Turbocharger
  • Engine Management Strategies
  • Fuel Injection Control Module (FICM)

The Import Series arranges information in a relevant and unique way, allowing us to cover Direct Injection and various modern intake systems in more depth than we ever could in our previous manufacturer-specific products. It has also made it possible to take a broader approach to the inter-action between fueling and breathing systems, and examines how this complicates modern engine management diagnostics. Despite manufacturers’ many names and configurations, our ‘High Level’ diagnostic approach is universal. In practical terms, this means initially performing the easiest tests that return the most information, reserving invasive tests for later in the diagnostic process when they make sense. These tests are rarely found in flow charts because they were developed in shops based on actual failures. This unique approach trims diagnostic times for all systems covered in this manual and seminar, including: Gasoline Direct Injection (GDI), carbon deposit determination & resolution, Electronic Throttle Controls (ETC), wastegate & bypass turbochargers, variable intake systems, and integrated crankcase breathing.

OEM flowcharts routinely make EVAP system diagnostics too complicated. Despite the wide variety of systems out there, our research has revealed that a layered approach is much faster than the linear OEM approach, leading to a profitable diagnosis without the wasted (and unbillable) diagnostic time or multiple trips for your customer. This is the 2nd subject in our Import Series, but also comes with a thick Domestic section. First, we show you universal techniques applicable to every system. If no leaks are found, the procedures become more system-specific, but not yet manufacturer-specific. All systems fall into one of four categories listed below, and by following our universal procedures, you can still avoid the technical nonsense that typically lengthens diagnostic times! Most faults are found using these first two layers. We have also included manufacturer and systemspecific tips and tricks for those cases where you’ll need to go that deep.  

System coverage includes:

  • Traditional & Split Purge/Seal Systems
  • Leak Detection Pumps (KOER & Key-OFF)
  • Natural Vacuum (EONV, NVLD, ESIM)
  • DMTL (comparative current flow)