Lesson Notes By Weeks and Term v4 - SHS 3
INTRODUCTION TO VEHICLE TECHNOLOGY
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INTRODUCTION TO VEHICLE TECHNOLOGY
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Subject: Applied Technology
Class: SHS 3
Term: 1st Term
Week: 5
Grade code: 3.1.2.LI.4
Strand code: 1
Sub-strand code: 2
Content standard code: 3.1.2.CS.1
Indicator code: 3.1.2.LI.4
Theme: AUTOMOTIVE TECHNOLOGY
Subtheme: INTRODUCTION TO VEHICLE TECHNOLOGY
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Welcome, future automotive technicians! Today, we are moving from the traditional way of fixing cars by just listening to sounds to the modern, computer-based way. Almost every car you see on the roads in Ghana today, from a Toyota Vitz to a Ford Ranger, has a computer inside that monitors its own health. When you see the "Check Engine" light on the dashboard, the car is trying to tell you something is wrong. Our lesson today is about learning to speak the car's language. We will explore On-Board Diagnostics (OBD), the system that makes this communication possible.
A. What is Vehicle Diagnostics?
Think of a doctor and a patient. When you are sick, you tell the doctor your symptoms (headache, fever). The doctor then uses tools (thermometer, stethoscope) to diagnose the problem.
Vehicle diagnostics is the same idea. It is the process of identifying what is wrong with a vehicle. The "symptoms" are things like the check engine light, strange noises, or poor performance. The "tools" are what we use to find the root cause of the problem.
There are two main approaches to diagnostics: Off-board and On-board. B. Off-board Diagnostics