Auto Electrical Course

Lesson 1 • Automotive Electrical Systems Overview

Introduces the major electrical systems found in modern vehicles. Connects theory to real-world system functions that you will diagnose and repair.

Lesson 2 • Basic Electrical Theory

Covers voltage, current, resistance, and Ohm's Law in vehicle context. Establishes the theoretical base for all subsequent circuit analysis.

Lesson 3 • Magnetism and Electromagnetism

Covers magnetic fields, induction, and their role in motors and generators. Prepares you to understand starter motors, alternators, and solenoids.

Lesson 1 • Wire Sizing and Circuit Design Basics

Covers wire gauge selection based on current load and circuit length. Prepares you to design and modify circuits safely and effectively.

Lesson 2 • Wiring Harnesses and Connectors

Examines harness construction, connector types, and terminal design used in vehicles. Builds skills for safe harness inspection and connector servicing.

Lesson 3 • Switches, Sensors, and Actuators

Introduces input and output devices that control and respond to electrical signals. Connects component knowledge to circuit control logic covered later.

Lesson 4 • Fuses, Relays, and Circuit Protection

Covers protective devices that prevent circuit damage from overcurrent. You learn to locate, test, and replace fuses, fusible links, and relays.

Lesson 1 • Circuit Testing Strategies

Develops a structured approach to electrical fault isolation. You apply half-split and component substitution methods to reduce diagnostic time.

Lesson 2 • Digital Multimeter Operation

Covers all multimeter functions used in automotive diagnostics. You perform accurate DC/AC voltage, resistance, and continuity tests.

Lesson 3 • Scan Tools and OBD Data Interpretation

Covers scan tool connection, live data streaming, and fault code retrieval. You interpret freeze-frame data and PIDs to support electrical diagnosis.

Lesson 4 • Oscilloscope Use in Automotive Diagnosis

Introduces the oscilloscope for capturing and analyzing electrical waveforms. Connects waveform patterns to sensor and actuator performance evaluation.

Lesson 1 • Alternator Operation and Testing

Explains alternator construction, rectification, and voltage regulation. You test output voltage, current, and ripple to confirm charging system health.

Lesson 2 • Charging System Fault Diagnosis

Applies diagnostic methods to undercharge, overcharge, and no-charge faults. You use wiring diagrams and test data to isolate charging system failures.

Lesson 3 • Battery Testing and Replacement

Teaches load testing, conductance testing, and open-circuit voltage checks. You select and install correct replacement batteries per vehicle specifications.

Lesson 1 • Starter Motor Removal and Inspection

Covers safe removal, bench testing, and inspection of starter assemblies. You evaluate brushes, commutator, and armature condition before replacement decisions.

Lesson 2 • Starting System Components and Operation

Covers starter motor, solenoid, drive gear, and inhibitor switch functions. Provides the component knowledge needed for accurate starting system diagnosis.

Lesson 3 • No-Crank and Hard-Start Fault Diagnosis

Applies a structured diagnostic process to no-crank and intermittent start faults. You use wiring diagrams and test results to confirm root cause before repair.

Lesson 1 • Body Control Module Functions

Introduces BCM-controlled systems and their communication with body circuits. You use scan tools to retrieve BCM codes and interpret body system data.

Lesson 2 • Exterior Lighting Systems

Covers headlight, tail light, turn signal, and brake light circuit operation. You test and repair lighting faults using wiring diagrams and voltage testing.

Lesson 3 • Horn, Wiper, and Blower Motor Circuits

Covers relay-controlled and direct-switched accessory circuits for common body systems. You trace and repair faults in horn, wiper, and HVAC blower circuits.

Lesson 4 • Comfort and Convenience System Diagnosis

Covers heated seats, mirrors, and power sunroof electrical circuits. You apply voltage and resistance testing to diagnose comfort system faults.

Lesson 1 • Engine Control Unit Fundamentals

Explains ECU inputs, outputs, and control strategies for engine management. Establishes the framework for understanding sensor and actuator circuit diagnosis.

Lesson 2 • Oxygen Sensors and Fuel Trim Analysis

Explains wideband and narrowband oxygen sensor operation and signal patterns. You use live data fuel trim values to diagnose rich and lean conditions.

Lesson 3 • Fuel Injector and Ignition Actuator Circuits

Covers injector driver circuits, ignition coil control, and actuator waveform analysis. You test injector pulse width and coil primary signals for fault isolation.

Lesson 4 • Mass Airflow, MAP, and Temperature Sensors

Covers MAF, MAP, IAT, and ECT sensor signal types and diagnostic values. You verify sensor accuracy using live data comparison and voltage testing.

Lesson 1 • Complex Intermittent Fault Strategies

Applies advanced data logging and freeze-frame techniques to intermittent faults. You build systematic case documentation to confirm repair effectiveness.

Lesson 2 • Vehicle Network Architecture

Explains CAN, LIN, and other network protocols used in modern vehicles. You identify network topology and module roles before performing network diagnostics.

Lesson 3 • Immobilizer and Security System Diagnosis

Covers transponder key, immobilizer ECU, and anti-theft circuit operation. You diagnose no-start faults caused by security system communication failures.

Lesson 4 • CAN Bus Fault Diagnosis

Covers oscilloscope and scan tool methods for diagnosing CAN bus faults. You locate open, short, and termination resistance faults on the network.