Two platforms for Indian technicians, in Hindi and English. Video courses taught by Harish Jaiswal, and an online portal to check sensors, actuators and modules step by step.
Garage Gyan is the training brand of Car Tool India. It has two platforms. Online Training is an Android app with the Electrical Master and Diagnostic Master courses: video lessons, PDF notes, quizzes and live doubt-clearing classes, in Hindi and English. The Online Support App explains how each sensor, actuator and module works and gives step-by-step checks with reference values. The portal is free with a course.
Electrical Master and Diagnostic Master, taught step by step with real workshop examples.
Diagrams and animations that make the circuit make sense, in 15–18 minute lessons.
The same test performed on a real vehicle — Maruti, Tata, Hyundai, Mahindra and commercial vehicles.
The errors technicians actually make on that job — and how to avoid them.
Notes with every lesson, made to keep open while you work.
Check what you learned before moving to the next part.
Live sessions every Monday morning and Tuesday evening.
Battery handling, airbag (SRS) circuits, ECU handling and static protection, high fuel pressure in diesel common rail, high voltage in ignition and injector circuits, and high-pressure CNG systems.
Select the component based on the problem, check it step by step, and catch the fault without missing it.
Voltage, current, resistance, duty cycle and frequency, plus types of circuits and switching, explained with simulations.
Each component’s input and output signal, how the ECU drives it, and how modules talk over the CAN network.
Components that react to real values and a simulated multimeter, so you can practise real tests virtually.
Online Support is fully free when you join the course.
Offer ends 10 November. For Online Support without the course.
Indian language versions are in production. Same lessons, same notes — in the language your team actually works in.
Car Tool India was built to solve one problem — Indian workshops struggling with modern vehicles. A tool alone does not fix that. Garage Gyan is the training side of the same promise: the method behind the tool, explained in the language technicians work in, with real vehicles and real faults.
Garage Gyan is the training brand of Car Tool India with two platforms. Online Training is the Android app with the Electrical Master and Diagnostic Master courses. The Online Support App is a web portal where you learn how a sensor, actuator or module works and check it step by step with reference values.
Electrical Master: 8 parts, 75 lessons, about 22 hours, covering wiring, fuses, relays, sensors, actuators, signals, modules and petrol, diesel and CNG systems. Diagnostic Master: 3 levels, 16 lessons, about 4.4 hours, from the OBD port to ECU flashing and online programming. Both come with PDF notes, quizzes and live doubt-clearing classes.
Electrical Master is ₹5,450 for 6 months or ₹8,870 for 1 year. Diagnostic Master has a launch price of ₹3,620 (fee ₹5,920) with 1 year validity.
Basics of voltage, current, resistance, duty cycle and frequency; how every sensor, actuator and module works, with pins, wires and signals; wiring, pin, signal and controller checks; OBD scanner live data references; virtual multimeter testing; and module-wise guides for EMS, ABS, SRS, BCM, TCM and the instrument cluster.
It is free with a Garage Gyan course. Without a course it is ₹9,999 per year, or ₹4,500 per year on the Diwali offer until 10 November 2026.
Go to garagegyan.com/student-portal and log in with your mobile number and PIN. For a demo login, message +91 91095 65095 on WhatsApp.
Hindi and English at launch. Tamil, Kannada, Telugu, Bengali, Gujarati, Marathi and Punjabi versions are in production.
Yes. Every learner gets 7 days of free access to the complete Diagnostic Master course, with all 16 lessons, PDF notes and quizzes. Electrical Master has 11 free lessons.
Yes. The app launched on 1 October 2026 and is available on Google Play. Electrical Master Chapter 1 is live and a new chapter is released every week.
Download the app for the courses, or log in to the Online Support App. Questions? Message us on WhatsApp or call.
