Automotive Online Training Shop

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If you’re looking for traditional automotive books or just “how-to” videos you’re in the wrong place.

Our Training Modules are developed by top-tier mechanics and automotive instructors, who have realised that skills do not develop by observing others work or watching videos. Successful automotive training matches the mechanics’ practical needs, does not slip off-topic, gives examples from actual problems, and best of all, motivates you to use your brain. The same recipe is the backbone of the Prodiags Training Modules — without traveling or fixed time schedules.

The storytelling in the Training Module is groundbreaking and the studies are visually intelligent. The animations make complicated things simple to understand, the pictures give a contact point to the automotive technology and real work, videos serve as examples when needed, and texts elevate your imagination. Thanks to our customers, the modules also include a printable study material, which guides you as a “virtual teacher”. It’s practically applied tasks are based on real work experience.

Whenever you think you master the subject, you can challenge yourself with the assessments. Warning, without studying you will probably not pass them — but you can always try.

As a proof of your knowledge, to you and to others, you can print out a certificate after passing the final exam.

After completing an order you get:

  • 12 month licence to the purchased products — without monthly subscriptions.
  • access to enjoy groundbreaking Prodiags Training Modules in full
  • a certificate after passing the final exam

We offer you a 100% satisfaction guarantee on all of our products — if you are not happy we will return your money.

Why Prodiags? Close

Automatic Transmissions

52.00  (~$56.40)

As automatic transmissions have developed, they have decreased in size and their structures are more compact. At the same time the gear count has risen to even as high as 9 gears, and their efficiency has caught up with other transmission types. Due to this, the technicians need to update their knowledge on “traditional” automatic transmissions.

  • Presentation of different transmissions
  • Structure and gear ratios of an automatic transmission
  • Torque converter, operation and hydraulic control
  • Planetary gear sets and operation
  • Planetary gear sets’ clutches and brakes
  • Hydraulic pressure regulation levels and shifting pressure control
  • Other components of the hydraulic control system
  • The transmission’s control unit and shifting programme
  • Electrohydraulic control
  • Speed, temperature and pressure
  • Driver’s functions and transmission control

Why this module?

What will you learn?

In the first study section, after presenting the different transmission types, we go through the automatic tranmission’s structure, for example the torque converter, hydraulic system and transmission mechanics in-depth. In this section you will learn what happens inside the transmission when you see the modes P, R, N, D, D1, etc. on the instrument cluster display. In the section “Components”, you will study the torque converter’s operation, which is made easy by the module’s visual animations.

The structure of the automatic transmission. Torque converter, planetary gear set and the clutches and the brakes.
The planetary gear sets and the clutches and brakes used to control them make up their own entity. In the planetary gear set operation you familiarise yourself with gear sets that have made the development of the transmission possible, for example Compound Planetary Gear Sets (Ravigneaux ja Simpson Gear Set) and Nested Planetary Gear Sets.
General overview of the transmission’s hydraulic control. In the image the automatic transmission’s solenoids and valves and oil pump. Also brakes and clutches and manual valve or gear selector valve in the image.
In the section on hydraulics you learn what kind of different hydraulic pressures are regulated in the transmission, how different torque converters are controlled and what the shifting pressure, that makes shifting smooth, is.

In the second study section, the center is the control system of the mechanics and hydraulics, and its electrical structure. With this module you learn how to utilise the electrical and structure schematics provided by the manufacturer, and use them to make an assumption of what operational checks can be performed with electrical measurements.

The hydraulics control uses different pressure levels, such as; line pressure, shifting pressure, control pressure and torque converter pressure, with which the pressure is kept stable and solenoids’ mechanical movement is quicker even though the control currents are lower.
In addition to the regulating and switching solenoids used in the control, the manual valve (gear selector valve) is a central part of the operation, even though it might be fully electrically operated.

In addition to their compact construction, automatic transmissions are special due to the fact that transmissions contain very different amounts of sensors, which we are used to use as aid when troubleshooting. Many programme and calculation measures decrease the need for sensors. That is why it is crucial to understand the function of the sensors in the transmission, since a fault in these might interrupt driving at once.

Example images on electrical measurement connected to automatic transmission troubleshooting.

At the end of the study section, we get to know the driver’s functions, control devices and driving modes’ differences in the shifting maps. The electrification of the gear selector used by the driver has also brought many versions of its connection to the transmission itself. Electronic use also has a crucial effect on the release of the Park Lock mechanism in a fault situation.



Open Product Sheet (PDF)

Learning Outcomes

After studying you will have a strong knowledge of the automatic transmission’s operation. You will be ready to develop your troubleshooting skills in practice and adopt the differences across different manufacturers solutions, as well as utilising instruction and training effectively. This training gives you the opportunity to even specialise in becoming an automatic transmission expert.


After completing your module of study and approved completion of the exercises, you will be allowed to take the final exam. After completing the final exam, you can print a Prodiags certificate from your attainments register as proof of your expertise.

Digitally verified certificate for completion of the module

Open Product Sheet (PDF)


To reach the best learning outcomes you will benefit from having a basic knowledge in electricity and measuring technology as well as the basics of common solutions in sensor and actuator technology. To study Electricity, we recommend the Training Modules:

  • Electricity
  • Electronics
  • Automotive Electrical Troubleshooting Basics

Content Equivalence

This course’s topics and objectives correspond in scope to a conventional 3 day training event.

Once you have made your payment, you get immediate access to the content in the form of a license valid for 12 months. You’ll save time and money by not needing to travel.

System Requirements

Internet connection and PC or laptop with browser. Recommended screen resolution 1024 x 768 or higher.


We want to make sure that you always have the latest version of our product. Prodiags reserves the right to make real time updates and changes. This way you’ll always have the best version, without extra fees.

Open Product Sheet (PDF)

1/4 – I’m a mechanic and I want to direct the payment for the training to my foreman, how can I do this?

  • When ordering a Prodiags Training Module you can easily direct the payment to your manager or even to your mum. Open/print out the link’s instructions.

Printable order instructions (PDF) 

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2/4 – How can I provide my mechanics with useful training for example when a customer cancels an appointment?

  • With the help of an Online Training Module you can utilise open spaces in the calendar and cancelled appointments with completing efficient training.
  • If you have an ambitious mechanic whose skills and competence level you want to raise, Prodiags Training Modules are the easiest and most efficient way to start the training.

Read more about the benefits >> Workshop Manager

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3/4 – What knowledge is required from me in order to provide added value to my training event with pre-learning and online material?

  • Starting using the training material requires only a few clicks from you. You order the training material, add the participants and the pre-learning is up and running.
  • A central added value of the Training Module’s Assessments: the trainer and learner knows the starting level, which enables the interest and motivation in the training to be maintained.

Learn more >> Trainer / Teacher

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4/4 – How can I share and present Prodiags products to my community?

  • Prodiags Automotive Training Modules are meant for everyone with an interest in the automotive industry. We cooperate with different influencers and we do not bind our partners to our brand.
  • If you were interested in presenting your own collaboration idea to us, please fill in the Influencer Form and tell us more about yourself and your idea.

   Open Influencer Form >>

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