Learning Objectives
5 objectives- Understand the fundamental principles and importance of automotive diagnostics.
- Identify and explain the major vehicle systems and their common issues.
- Use diagnostic tools and interpret diagnostic trouble codes effectively.
- Perform basic vehicle inspections and troubleshoot common automotive problems.
- Analyze engine and electrical system performance and carry out brake system diagnostics.
Content Outline
PreviewUnit 2152: Automotive Diagnostics
1. Introduction to Automotive Diagnostics
- Definition and purpose of automotive diagnostics
- Importance of accurate diagnostics in vehicle maintenance and repair
- Overview of diagnostic methods and approaches
2. Understanding Vehicle Systems
2.1 Engine System
- Components and function
- Common engine issues (e.g., misfires, overheating)
2.2 Transmission System
- Types of transmissions
- Common problems (e.g., slipping gears, delayed shifting)
2.3 Brake System
- Brake types and components
- Symptoms of brake problems
2.4 Electrical System
- Battery, alternator, starter, wiring
- Common electrical faults
3. Diagnostic Tools and Equipment
- Scan tools: types and functionalities
- Multimeters and their use in diagnostics
- Specialized diagnostic software and interfaces
- Safety considerations when using diagnostic tools
4. Reading and Interpreting Diagnostic Codes
- Understanding onboard computer systems (OBD-I and OBD-II)
- Types of Diagnostic Trouble Codes (DTCs)
- Procedures for retrieving and interpreting codes
- Using codes to pinpoint vehicle issues
5. Performing Basic Inspections
- Visual inspections: what to look for
- Fluid checks: oil, coolant, brake fluid, transmission fluid
- Checking belts, hoses, and filters
- Documenting inspection findings
6. Troubleshooting Common Automotive Issues
- Engine problems: poor acceleration, rough idling, stalling
- Transmission issues: slipping, hard shifts
- Brake problems: squealing, spongy pedal, fluid leaks
- Electrical faults: battery failure, blown fuses, sensor malfunctions
- Systematic troubleshooting approach
7. Engine Performance Analysis
- Diagnostic tests for engine performance
- Using scan tools to monitor engine parameters
- Techniques for identifying causes of poor performance
- Case studies/examples
8. Electrical System Diagnostics
- Testing battery health and alternator output
- Diagnosing starter issues
- Inspecting wiring harnesses and connectors
- Identifying and repairing faulty sensors and switches
9. Brake System Diagnosis and Repair
- Identifying brake system symptoms
- Inspecting brake pads, discs, drums, and fluid levels
- Diagnosing hydraulic issues
- Performing repairs and replacements
- Safety protocols during brake repairs
10. Preventative Maintenance and Inspections
- Importance of preventative maintenance
- Developing maintenance schedules
- Routine inspections to prevent failures
- Record keeping and customer communication
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