Alternator and Starter Motor Course

Lesson 1 • Basic Electrical Concepts for Automotive Use

Covers voltage, current, resistance, and power as applied to vehicle systems. Establishes the electrical vocabulary needed throughout the course.

Lesson 2 • Automotive Wiring and Circuit Protection

Introduces wire gauges, connectors, fuses, and relays used in starting and charging circuits. Provides context for safe diagnosis and repair.

Lesson 3 • Vehicle Battery Principles

Explains battery chemistry, capacity ratings, and state of charge. Connects battery behaviour to both starting demands and charging system output.

Lesson 4 • Reading Automotive Wiring Diagrams

Teaches interpretation of schematic symbols and circuit paths for starting and charging systems. Enables accurate fault tracing before hands-on work begins.

Lesson 1 • Alternator Drive Systems and Cooling

Examines belt drives, pulley ratios, overrunning alternator pulleys, and thermal management. Links mechanical inputs to electrical output efficiency.

Lesson 2 • Alternator Internal Components

Identifies rotor, stator, rectifier, voltage regulator, and bearings with their functions. Connects component roles to overall charging system output.

Lesson 3 • Voltage Regulation Mechanisms

Covers internal and external voltage regulators, field current control, and duty-cycle modulation. Shows how output voltage is maintained across varying loads and speeds.

Lesson 4 • Three-Phase AC Generation and Rectification

Details how three-phase stator windings produce AC and how the diode bridge converts it to DC. Explains ripple voltage and its effect on vehicle electronics.

Lesson 1 • Starter Motor Internal Components

Identifies field coils, armature, commutator, brushes, and end frames with their roles. Connects each part to cranking torque and current draw characteristics.

Lesson 2 • Solenoid and Control Circuit Operation

Details pull-in and hold-in windings, main contact closure, and ignition switch circuit paths. Shows how low-current control signals switch high-current motor power.

Lesson 3 • DC Motor Theory for Starters

Explains how current-carrying conductors in a magnetic field produce rotational torque. Provides the physics basis for understanding starter motor behaviour under load.

Lesson 4 • Starter Motor Variants and Applications

Compares conventional, gear-reduction, and permanent-magnet starter designs. Relates design choices to engine displacement, compression ratio, and packaging constraints.

Lesson 1 • Diode and Stator Winding Diagnosis

Uses oscilloscope waveform analysis and diode testing to locate internal alternator faults. Connects waveform patterns to specific failed components.

Lesson 2 • Voltage Drop Testing in Charging Circuits

Applies voltage drop measurement to B+ output cables, ground paths, and fusible links. Identifies resistance faults that reduce charging efficiency.

Lesson 3 • Charging System Fault Code Interpretation

Covers scan tool retrieval of charging-related diagnostic trouble codes and data PIDs. Links electronic control module inputs to physical charging system faults.

Lesson 4 • Charging System Performance Specifications

Defines regulated voltage range, maximum output current, and ripple limits. Establishes pass/fail benchmarks used in all subsequent diagnostic procedures.

Lesson 1 • Voltage Drop Testing in Starting Circuits

Applies voltage drop measurement to battery cables, solenoid contacts, and ground paths. Identifies resistance faults that reduce cranking torque.

Lesson 2 • Starter Bench Testing and Evaluation

Covers free-spin speed test, no-load current draw, and solenoid pull-in verification on a bench. Confirms starter condition before reinstallation.

Lesson 3 • Starter Current Draw Testing

Teaches inductive clamp and battery load tester methods for measuring cranking current. Distinguishes high-draw faults from low-draw open-circuit faults.

Lesson 4 • Cranking System Performance Specifications

Defines acceptable cranking speed, current draw, and voltage during cranking. Provides the baseline values needed to judge starter system health.

Lesson 1 • Electrical Testing of Disassembled Components

Tests rotor field winding resistance, stator continuity, and diode rectifier integrity. Determines which components require replacement before reassembly.

Lesson 2 • Alternator Disassembly and Component Inspection

Details case separation, rotor removal, stator extraction, and brush holder disassembly. Identifies wear patterns and damage indicators on each component.

Lesson 3 • Alternator Reinstallation and Post-Repair Verification

Guides correct mounting, belt tensioning, electrical reconnection, and output verification after reinstallation. Confirms the repair meets charging system specifications.

Lesson 4 • Component Replacement and Reassembly

Covers bearing pressing, brush replacement, diode pack installation, and case torque sequence. Ensures correct assembly for reliable post-repair operation.

Lesson 1 • Armature and Commutator Service

Covers commutator turning, undercutting mica, armature growler testing, and runout measurement. Restores commutator surface for proper brush contact.

Lesson 2 • Safe Starter Motor Removal Procedures

Covers battery disconnection, heat shield removal, cable labelling, and mounting bolt access. Prevents injury and component damage during removal from the vehicle.

Lesson 3 • Starter Disassembly and Component Inspection

Details through-bolt removal, brush end frame separation, armature extraction, and drive inspection. Identifies wear, burning, and mechanical damage on each part.

Lesson 4 • Component Replacement and Reassembly

Covers brush replacement, overrunning clutch installation, solenoid contact service, and end frame assembly. Ensures correct torque and alignment for reliable operation.

Lesson 1 • Belt-Integrated Starter-Generator Systems

Explains belt-integrated starter-generator architecture, 48-volt mild hybrid operation, and dual-mode function. Identifies safety precautions for higher-voltage systems.

Lesson 2 • Stop-Start System Operation and Service

Details automatic engine stop-start logic, enhanced battery requirements, and high-cycle starter demands. Covers unique service considerations for stop-start components.

Lesson 3 • Predictive Maintenance and System Monitoring

Introduces battery state-of-health monitoring, alternator efficiency trending, and service interval planning. Prepares students to advise customers on proactive component replacement.

Lesson 4 • Network Communication in Charging and Starting

Covers CAN bus messages, battery sensor data, and module-to-module coordination for charging control. Enables diagnosis of faults caused by communication errors.