Section I - Automotive Service Industry
Chapter 1 - Automotive Background and Overview (page 1)
Vehicle Chassis Identification
Chapter 2 - Careers in the Automotive Service Industry (page 8)
Vehicle Service Facility Visit
Chapter 3 - Starting a Career in the Automotive Industry (page 16)
Sample Resume
Sample Cover Letter
Job Shadowing
Chapter 4 - Working as a Professional Service Technician (page 25)
Documenting a Work Order
ASE Technician Certification
Section II - Safety and Health Issues
Chapter 5 - Shop Safety (page 34)
Shop Safety Checklist
Fire Extinguisher
Chapter 7 - Health and Environmental Concerns (page 51)
Emission and Chemical Identification
Emission Label Terms
Section III - Fasteners, Tools, and Shop Equipment
Chapter 9 - Hand and Power Tools (page 69)
Hand Tool Identification
Power and Shop Equipment Safety Survey
Section IV - Measuring, Math and Scientific Principles
Chapter 11 - Measuring, Math, and Charts (page 95)
Micrometer
Vernier Dial Caliper
Feeler Gauge
Dial Indicator
Telescopic Gauge
Math Problem Exercise
Chapter 12 - Scientific Principles and Materials (page 106)
Water Boil Experiment
Section V - Service Information and Routine Maintenance
Chapter 13 - Service Information, Work Orders, and Vehicle Identification (page 116)
Vehicle Identification Number
Vehicle Service History
Technical Service Bulletins
Vehicle Service Information
Vehicle Safety Certification Label
Work Order
Chapter 14 - Preventative Maintenance and Service Procedures (page 123)
Safety Check
Windshield Wiper Blade Service
Engine Oil Dipstick Test
Engine Oil Change
Accessory Drive Belt Replacement
Tire Rotation
Lubrication Service
Engine Fluids Check
Diesel Exhaust Fluid Service
Section VI - Engine Repair (A1)
Chapter 15 - Gasoline Engine Operation, Parts, and Specifications (page 141)
Hybrid Vehicle ICE Service Precautions
Gasoline Engine Identification
General Engine Specification
Chapter 16 - Diesel Engine Parts, Operation, and Aftertreatment (page 153)
Diesel Engine Service Information
Diesel Exhaust Fluid Service II
Chapter 17 - Antifreeze and Coolant (page 168)
Antifreeze and Coolant Information
Test and Replace Coolant
Chapter 18 - Cooling System Operation and Diagnosis (page 175)
Engine Cooling System Inspection
Radiator Testing with an Infrared Pyrometer
Accessory Drive Belt Replacement II
Replace Water Pump
Replace Thermostat
Radiator Replacement
Engine Fan Inspection and Testing
Chapter 19 - Engine Oil and Filters (page 193)
Engine Oil and Filter Information
Engine Oil Change II
Chapter 20 - Lubrication System Operation and Diagnosis (page 207)
Lubrication & Cooling System Components
Auxiliary Oil Coolers
Oil Temperature and Pressure Switches
Oil Pump Inspection
Chapter 21 - Intake and Exhaust Systems (page 216)
Port Fuel – Injection Intake Manifold Identification
Exhaust System Inspection
Intake Manifold Gasket Replacement
Chapter 22 - Turbocharging and Supercharging (page 226)
Turbocharger & Supercharger Systems
Chapter 23 - Engine Condition Diagnosis (page 236)
Engine Problem Analysis
Fluid Leakage Detection
Engine Noise and Vibration Diagnosis
Vacuum Testing
Cylinder Power Balance Test
Compression Testing
Cylinder Leakage Testing
Oil Pressure Measurement
Chapter 24 - In-Vehicle Engine Service (page 253)
Replace Water Pump II
Inspect and Replace Timing Chain(s) and Gears
Valve Adjustment
Chapter 25 - Engine Removal and Disassembly (page 263)
Remove and Reinstall Engine (FWD)
Remove Cylinder Head(s) and Inspect
Engine Disassembly
Cylinder Wall Inspection
Block Thread Inspection and Correction
Chapter 26 - Engine Cleaning and Crack Detection (page 274)
Crack Detection and Cylinder Head Warpage
Engine Block Crack Detection and Warpage
Chapter 27 - Cylinder Head Inspection and Service (page 283)
Cylinder Head Specifications
Cylinder Head Flatness Measurement
Valve Guide Specifications and Measurement
Cylinder Head and Valve Train Components
Valve Spring Squareness and Free Height
Valve Stem Seal Replacement
Valve Seat Inspection and Measurement
Valve Spring Assembled Height
Chapter 28 - Camshafts and Valve Trains (page 301)
Camshaft Specification
Valve Train Inspection
Valve Lifter Inspection
Valve Adjustment II
Camshaft Inspection
Camshaft Bearing Surface Inspection
Camshaft Position Sensor & Reluctor Ring
Chapter 29 - Variable Valve Timing and Displacement Systems (page 318)
VVT Inspect and Replace Timing Chain(s) and Gears
Variable Valve Timing System Diagnosis
Chapter 30 - Pistons, Rings, and Connecting Rods (page 327)
Connecting Rod Specification/Measurement
Piston and Bearing Wear Patterns
Piston Inspection and Measurement
Piston Ring Installation
Chapter 31 - Engine Blocks (page 343)
Cylinder Block Specification/Measurement
Engine Block Inspection
Cylinder Bore Deglazing
Camshaft Bearing Inspection
Piston to Bore Clearance
Chapter 32 - Crankshafts, Balance Shafts, and Bearings (page 354)
Camshaft Inspection II
Crankshaft Inspection
Inspect Main and Rod Bearings
Auxiliary and Balance Shafts
Inspect Crankshaft Vibration Damper
Chapter 35 - Engine Installation and Break-In (page 408)
Remove and Install OBD Equipped Engine
Section VII - Electrical and Electronic Systems (A6)
Chapter 38 - Series, Parallel, and Series-Parallel Circuits (page 430)
Series Circuit Worksheet #1
Series Circuit Worksheet #2
Series Circuit Worksheet #3
Parallel Circuit Worksheet #1
Parallel Circuit Worksheet #2
Parallel Circuit Worksheet #3
Series-Parallel Circuit Worksheet #1
Series-Parallel Circuit Worksheet #2
Series-Parallel Circuit Worksheet #3
Chapter 39 - Circuit Testers and Digital Meters (page 440)
Digital Multimeter Use for Electrical Problems
Test Light Usage
Circuit Testing Using a Fused Jumper Wire
Chapter 41 - Automotive Wiring and Wire Repair (page 464)
Fusible Links, Circuit Breakers, and Fuses
Inspect Wiring and Connectors
Wire Harness and Connector Repair
Solder Wire Repair
Chapter 42 - Wiring Schematics and Circuit Testing (page 477)
Diagnose Electrical/Electronic Circuits
Locate Shorts, Grounds, and Opens
Chapter 44 - Magnetism and Electromagnetism (page 498)
Inspect and Test the Relays
Chapter 48 - 12-Volt Battery Testing and Service (page 546)
Key Off Battery Drain
Battery and Capacity Tests
Electronic Memory Saver Usage
Service and Replace the Battery
Battery Charging
Jump Starting
Reinitialization
Chapter 49: Starting System Parts and Operation (page 559)
Cranking System Identification
Chapter 50 - Starting System Diagnosis and Service (page 571)
Starter Disassembly and Testing
Starter Solenoid Testing
Starter Voltage Drop/Current Draw Tests
Starter Relays and Solenoids
Remove and Install the Starter
Chapter 51 - Charging System Parts and Operation (page 582)
Alternator Identification
Chapter 52 - Charging System Diagnosis and Service (page 593)
Alternator Disassembly
Alternator Rotor Testing
Alternator Stator Testing
Charging System Output Test
Charging System Diagnosis
Remove and Install Alternator
Alternator Drive Belt
Charging Circuit Voltage Drop
Chapter 53 - Lighting and Signaling Circuits (page 609)
Lighting System Diagnosis
High-Intensity Discharge Headlights
Aim Headlights
Chapter 54 - Driver Information and Navigation Systems (page 628)
Gauge Diagnosis
Driver Information and Warning Devices
Reset Maintenance Indicator
Chapter 55 - Security and Immobilizer Systems (page 643)
Keyless Entry and Anti-Theft Diagnosis
Chapter 56 - Airbag and Pretensioner Circuits (page 651)
Airbag Operation & Diagnosis
Disarm and Enable Airbags
Chapter 57 - Body Electrical Accessories (page 665)
Horns – Operation & Diagnosis
Windshield Wiper/Washer Operation
Power Window Diagnosis
Remove Door Panel
Body Electronic Diagnosis with Scan Tool
Comfort and Convenience Accessories
Chapter 58 - Advanced Driver Assist Systems (ADAS) (page 692)
Advanced Driver Assist Systems
ADAS Calibration
Section VIII - HVAC (A7)
Chapter 60 - Heating and Air-Conditioning Principles (page 711)
A/C Component Identification
A/C Component Purpose and Function
Chapter 61 - A/C System Components, Operation, and Service (page 720)
Inspect Belts and Hoses
A/C Compressor Clutch Control Diagnosis
Air Conditioning Compressor Service
Air Conditioning System Control Devices
A/C Compressor Control System Diagnosis
Chapter 62 - Air Management System (page 735)
HVAC Electrical Controls
Blower Motor Diagnosis
A/C and Heater Controls
HVAC Ducts and Doors
Chapter 63 - Automatic Air-Conditioning and Heat Pump Systems (page 746)
Automatic / Dual Climate Control Systems
Chapter 64 - Refrigerants and Refrigerant Oils (page 757)
Checking Refrigerant for Contamination
Refrigerant Oil Inspection
Chapter 65 - Refrigerant Recovery, Recycling, and Recharging (page 767)
Recycle Refrigerant
Refrigerant Handling Equipment
Refrigerant Identification/ Read Pressures
Evacuate and Charge A/C System
Chapter 66 - Air-Conditioning System Diagnosis and Service (page 781)
Retrieve and Record Diagnostic Trouble Codes
Air Conditioning Noise Diagnosis
Performance Test Heating and AC System
Evaporator Housing Drain
Remove and Install Evaporator
Identify Source of A/C Odors
Section IX - Engine Performance (A8)
Chapter 67 - Gasoline, Alternative Fuels, and Diesel Fuels (page 796)
Flexible Fuel Vehicle Identification
Alternative Fuel Power and Economy Specifications
Alcohol Content in Gasoline
Chapter 68 - Ignition System Parts and Operation (page 814)
Ignition System Identification
Spark Plug Specifications
Chapter 69 - Ignition System Diagnosis and Service (page 824)
Electronic Ignition Diagnosis
Scan Tool Testing of the Ignition System
Ignition Scope Analysis
Spark Plugs Inspection
Ignition Coil Testing
Position Sensor Diagnosis
Position Sensor Waveform Testing
Chapter 71 - Temperature and Throttle Position Sensors (page 843)
Temperature Sensor Scan Tool Diagnosis
Throttle Position Sensor Testing
Chapter 72 - MAP and MAF Sensors (page 854)
MAP Sensor Diagnosis
MAF Sensor Diagnosis
Chapter 73 - Oxygen Sensors (page 865)
Oxygen Sensor Diagnosis
Wide-Band Oxygen Sensor
Chapter 74 - Fuel Pumps, Lines, and Filters (page 880)
Fuel Pump Testing
Fuel Pump Current Draw Test
Fuel Filter Replacement
Chapter 75 - Fuel-Injection Parts and Operation (page 893)
Modes of Fuel Injection Operation
Idle Air Control
Chapter 76 - Gasoline Direct-Injection Systems (page 902)
Gasoline Direct Injection Identification
Chapter 77 - Electronic Throttle Control System (page 909)
Electronic Throttle Control System ID
Chapter 78 - Fuel-Injection System Diagnosis and Service (page 917)
Scan Tool Diagnosis
Fuel Trim Diagnosis
Fuel-Injection System Diagnosis
Injector Resistance Testing
Fuel Injector Balance Test
Injector Voltage Waveform Test
Chapter 79 - Vehicle Emissions Standards and Testing (page 932)
Exhaust Gas Analysis
Chapter 80 - Evaporative Emissions Control and EGR Systems (page 941)
EVAP System Component Inspection
Evaporative Emission Controls Diagnosis
Evaporative Emission DTC
EGR System Diagnosis
Service EGR System
EGR Electrical Sensors
Chapter 81 - Positive Crankcase Ventilation and Secondary Air-Injection Systems (page 954)
PCV System Inspection
PCV System Diagnosis
Secondary Air Injection Diagnosis
AIR Pump Component Inspection
AIR Pump Electrical Component Inspection
Chapter 82 - Catalytic Converters (page 961)
Exhaust System Backpressure Test
Catalytic Converter Test
Chapter 83 - Onboard Diagnosis (page 969)
OBD II Connector Identification
Retrieving OBD II Diagnostic Trouble Codes
OBD II Monitors Status
Chapter 85 - Strategy-Based Diagnosis (page 985)
No-Code Diagnosis of Driveability Concerns
Section X - Hybrid and Fuel Cell Vehicles (L3)
Chapter 86 - Hybrid and Electric Vehicle Safety (page 996)
High Voltage Circuit Identification
Hybrid/ Electric Vehicle HV Circuit Disconnect
Chapter 87 - Introduction to Electric and Hybrid Electric Vehicles (page 1007)
Hybrid Electric Vehicle Nomenclature
Types of Hybrid and Electric Vehicles
Chapter 88 - Hybrid and Electric Vehicle Maintenance (page 1017)
EV and HEV Preventative Maintenance
HEV Test and Replace Coolant
Chapter 89 - EV and HEV High-Voltage Batteries (page 1025)
High Voltage Batteries
High Voltage Battery Diagnosis
Chapter 90 - EV and PHEV Charging (page 1042)
Plug-In Vehicle Charging
Plug-In Vehicle Charging Diagnosis
Chapter 91 - Regenerative Brakes (page 1053)
Regenerative Braking System Identification
Regenerative Braking System Diagnosis
Chapter 92 - Fuel Cells and Advanced Technologies (page 1062)
Fuel Cell Identification
Section XI - Brakes (A5)
Chapter 93 - Braking System Components and Performance Standards (page 1071)
Identify and Interpret Brake Concerns
Brake System Component Identification
Chapter 94 - Braking Principles and Friction Materials (page 1078)
Brake System Principles
Brake Friction Material Identification
Chapter 95 - Brake Hydraulic Systems (page 1088)
Hydraulic Pressure Analysis
Brake Pedal Height
Master Cylinder Service
Hydraulic System Fault Analysis
Brake Control Valves
Red Brake Warning Lamp Diagnosis
Brake Stop Light Switch
Chapter 96 - Brake Fluid, Lines, and Bleeding (page 1108)
Brake Hoses and Lines
Brake Fluid
Brake Bleeding
Chapter 97 - Wheel Bearings and Service (page 1129)
Wheel Bearing Diagnosis
Wheel Bearing Service
Wheel Bearing and Race Replacement
Inspect and Replace Wheel Studs
Sealed Wheel Bearing Replacement
Chapter 99 - Drum Brake Diagnosis and Service (page 1158)
Drum Brake Problem Diagnosis
Drum Brake Service
Install Wheel and Torque Lug Nuts
Chapter 101 - Disc Brake Diagnosis and Service (page 1184)
Brake System Road Test
Disc Brake Diagnosis and Service
Brake Pad Wear Indicator System
Brake Pad Burnishing-In Procedure
Chapter 102 - Parking Brake Operation, Diagnosis, and Service (page 1196)
Rear Disc Parking Brake Adjustment
Parking Brake Adjustment
Parking Brake Operation
Chapter 103 - Machining Brake Drums and Rotors (page 1208)
Brake Drum Service
Brake Rotor Service
Chapter 104 - Power Brake Unit Operation, Diagnosis, and Service (page 1247)
Vacuum Power Brake Booster Test
Vacuum Supply/Manifold or Auxiliary Pump
Vacuum-Type Power Booster
Hydro-Boost Test
Master Cylinder Pushrod Length
Chapter 105 - ABS Components and Operation (page 1259)
Electronic Brake (ABS) Component Identification
Chapter 106 - ABS Diagnosis and Service (page 1273)
Electronic Brake (ABS) Fault Diagnosis
Depressurization of High-Pressure ABS
Bleed ABS Hydraulic Circuits
ABS Wheel Speed Sensor Testing
Modified Vehicle ABS Problem Diagnosis
Chapter 107 - Electronic Stability Control Systems (page 1283)
Traction Control/Vehicle Stability System
Section XII - Suspension and Steering (A4)
Chapter 109 - Tire-Pressure Monitoring Systems (page 1310)
Tire Pressure Monitoring System
Chapter 110 - Tire and Wheel Service (page 1323)
Tire Inspection and Air Loss
Tire Vibration and Pull Diagnosis
Tire Rotation
Tire, Wheel, Axle, and Hub Runout
Tire Replacement
Tire Repair
Chapter 111 - Suspension System Components and Operation (page 1345)
Suspension and Steering System Information
Research Vehicle Service Information
Chapter 112 - Front Suspension and Service (page 1367)
Suspension System Diagnostic Test Drive
Diagnose Suspension Concerns
Suspension Inspection/Component Replacement
Torsion Bar
Strut Rod and Stabilizer Bushings
MacPherson Strut Service
Front Shock Absorber Replacement
Shock Absorber/Strut Cartridge Replacement
Chapter 113 - Rear Suspension and Service (page 1392)
Rear Leaf Springs
Inspect or Replace Rear Track Bar/ Strut Rods
Chapter 114 - Electronic Suspension Systems (page 1402)
Electronic Suspension Diagnosis
Chapter 115 - Steering Columns and Gears (page 1418)
Airbag System and Steering Wheel Service
Steering Column Related Diagnosis
Steering Gear Adjustment and Replacement
Steering Problem Diagnosis
Chapter 116 - Steering Linkage and Service (page 1431)
Inner Tie Rod Ends and Bellows Boots
Inspect and Replace Steering Components
Tie-Rod End Inspection and Replacement
Chapter 117 - Hydraulic Power Steering Systems (page 1446)
Power Steering Fluid
Diagnose Power Steering Fluid Leakage
Power Steering Pump Belt
Service Power Steering Pump
Inspect Power Steering Hoses and Fittings
Power Steering System Pressure Test
Chapter 118 - Electric Power Steering Systems (page 1467)
Electronically Controlled Steering Systems
HEV Power Steering Circuits Services
Chapter 120 - Alignment Diagnosis and Service (page 1489)
Pre-Alignment Inspection
Diagnose Alignment-Related Faults
Alignment Angle Readings
TOOT and SAI
Four-Wheel Alignment
Section XIII - Manual Drive Train and Axles (A3)
Chapter 121 - Clutch Components, Operation, and Replacement (page 1513)
Clutch Identification
Diagnose Clutch Concerns
Clutch Linkage Inspection
Inspect the Hydraulic Clutch
Inspect Clutch Components
Bleed Clutch Hydraulic System
Flywheel and Ring Gear Inspection
Flywheel Runout
Dual Mass Flywheel Inspection
Chapter 122 - Manual Transmissions/Transaxles (page 1529)
Manual Transmission/ Transaxle Identification
Diagnose Fluid Condition & Loss
Drain and Fill Manual Transmission/Transaxle
Remove and Replace Transmission/Transaxle
Disassemble/Reassemble Transmission/Transaxle
Manual Transmission Noise/Shifting Diagnosis
Manual Transmission/Transaxle Linkage
Transaxle Final Drive Noise Diagnosis
Chapter 123 - DriveShafts and Half Shafts (page 1552)
CV Joint Noise and Vibration Diagnosis
Chapter 124 - DriveShaft and Half Shafts Service (page 1562)
Drive Axle Shaft Service
Drive Axle Flange Runout and Axle End Play
Drive Axle Shaft Wheel Studs
Drive Axle Seals, Bearings and Retainers
CV Joint Service
Chapter 125 - Drive Axles and Differentials (page 1574)
Differential Noise Diagnosis
Differential Fluid Leaks
Pinion Seal Replacement
Ring Gear Runout
Differential Assembly Inspection
Drive Pinion Depth
Drive Pinion Bearing Preload
Differential Side Bearing Preload
Ring and Pinion Tooth Pattern
Differential Pinion Gears and Case
Differential Case Assembly
Limited Slip Differential Diagnosis
Check, Drain and Refill Differential Case
Limited Slip Differential Rotating Torque
Chapter 126 - Four-Wheel Drive and All-Wheel Drive (page 1592)
Four-Wheel Drive Identification
Tire Circumference & Final Drive Ratio Variations
Inspect and Adjust Shifting Controls
Transfer Case Replacement
Transfer Case Disassembly and Reassembly
Chapter 127 - Vibration and Noise Diagnosis and Correction (page 1609)
Noise and Vibration Diagnosis
Universal Joint Noise and Vibration Diagnosis
Driveshaft Phasing and Balance
Section XIV - Automatic Transmissions and Transaxles (A2)
Chapter 128 - Automatic Transmission/Transaxle Principles (page 1622)
Automatic Transmission/Transaxle ID
Drivetrain Identification
Chapter 129 - Continuously Variable and Dual-Clutch Automatic Transmissions (page 1634)
Continuously Variable Transmission
Chapter 130 - Hydraulic Components and Control Systems (page 1647)
Diagnose Hydraulic Pressure Concerns
Transmission/Transaxle Power Flow Principles
Chapter 132 - Automatic Transmission/Transaxle Diagnosis and In-Vehicle Service (page 1680)
Check Fluid Level and Condition
Non-Dipstick Fluid Condition & Loss
Torque Converter Stall Test
Torque Converter Lock-Up Test
Inspect/Replace Powertrain Mounts
Service Automatic Transmission/Transaxle
Inspect and Adjust or Replace Linkages
Noise and Vibration Diagnosis
Electronic Transmission Control System Diagnosis
Diagnose Fluid Loss
Chapter 133 - Automatic Transmission/Transaxle Unit Repair (page 1692)
Inspect Converter Flex Plate
Inspect Oil Pump Assembly
Inspect Servo Bore, Piston, and Seals
Clutch Pack Clearance and Air Check
Inspect One-Way Clutches
Thrust Washer and Bearing Inspection
Inspect Oil Delivery Circuits
Bushing Inspection
Planetary Gear Assembly Inspection
Clutch Drum Assembly Inspection
Inspect and Service Valve Body Assembly
Inspect/ Replace Seals and Gaskets
Endplay/Preload Measurement
Remove/Install Auto Transmission/Transaxle
Disassemble Auto Transmission/Transaxle
Assemble Automatic Transmission/Transaxle
Section XV - Specialty ASE Certification Content
Chapter 134 - Parts Specialist (P2) (page 1711)
Parts Specialist - Vehicle Identification
Parts Consultant – General Operations
Chapter 135 - Service Consultant (C1) (page 1722)
Service Consultant – Vehicle Identification
Service Consultant – Work Order
Chapter 136 - Exhaust Systems Specialist (page 1733)
Exhaust System Specialist - Inspection
Exhaust System Specialist - Fabrication