Contents 11 Copyright by Goodheart-Willcox Co., Inc. Voice Activated System . . . . . . . . . . . . . . . . . . 352 Navigation System . . . . . . . . . . . . . . . . . . . . . 352 Vehicle Tracking System. . . . . . . . . . . . . . . . . . 353 Collison Avoidance System . . . . . . . . . . . . . . . 353 Automatic Parking System . . . . . . . . . . . . . . . . 354 Chapter 18 Wiper and Horn Systems. . . . . . . . . . . . 357 Windshield Wiper System . . . . . . . . . . . . . . . . 358 Wiper Operation | Wiper Motor Construction Windshield Washer System . . . . . . . . . . . . . . . 359 Washer Pump Construction | Wiper- Washer Circuit Diagram | Pulse Wiper Action | Rain-Sensing Wiper System Horn System . . . . . . . . . . . . . . . . . . . . . . . . . . 363 Horn Construction | Horn Relay Theft Deterrent System . . . . . . . . . . . . . . . . . . 364 Chapter 19 Power Accessories, Security Systems, and Entertainment Systems . . . . . . . . . 367 Power Windows. . . . . . . . . . . . . . . . . . . . . . . . 368 Automatic Window Control | Power Sunroof Power Door Locks . . . . . . . . . . . . . . . . . . . . . . 370 Security Systems. . . . . . . . . . . . . . . . . . . . . . . 370 Keyless Entry System | Resistance Key | Transponder Key Power Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 373 Heated Seats Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 377 Heated Mirrors Entertainment Systems . . . . . . . . . . . . . . . . . . 377 Radio System | AM, FM, Digital Radio | Satellite Radio | Speakers | Power Booster (Stereo Amplifi er) | Compact Disc Player | Digital Video Disc Player | Digital Music Player Chapter 20 Restraint System Electronics . . . . . . . . . 385 Vehicle Collisions . . . . . . . . . . . . . . . . . . . . . . 386 Active and Passive Restraints. . . . . . . . . . . . . . 386 Seat Belt Systems | Knee Diverter Air Bag Systems . . . . . . . . . . . . . . . . . . . . . . . 386 Air Bag Types | Air Bag Module | Mechanical Air Bags | Air Bag Sensors | Air Bag Controller | Restraint System Circuit Event Data Recorder . . . . . . . . . . . . . . . . . . . . 393 Chapter 21 Chassis System Electronics . . . . . . . . . . 397 Anti-lock Brake System (ABS). . . . . . . . . . . . . . 398 ABS Components | Wheel Speed Sensors ABS ECM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 ABS Hydraulic Actuator | ABS Operation | Electric Brake Calipers | Electric Parking Brake Electric/Electronic Steering Systems . . . . . . . . 404 Electronic Vehicle Parking System Electronic Height Control. . . . . . . . . . . . . . . . . 405 Electronic Shock Absorber Systems . . . . . . . . . 407 Magnetic Fluid Shock Absorbers | Electronic Air Shock Absorbers | Active Suspension System Traction and Stability Control Systems . . . . . . . 409 Electronic Climate Control. . . . . . . . . . . . . . . . 410 Electronic Cruise Control System . . . . . . . . . . . 411 Electronic Transmission/Transaxle Control Systems . . . . . . . . . . . . . . . . . . . . . . . 414 Electronic Differential Control . . . . . . . . . . . . . 414 Chapter 22 Hybrid Drive Systems . . . . . . . . . . . . . . . 417 Hybrid Vehicle History . . . . . . . . . . . . . . . . . . . 418 Major Hybrid Drive Assemblies. . . . . . . . . . . . . 418 Types of Hybrids . . . . . . . . . . . . . . . . . . . . . . . 419 Series Hybrid | Parallel Hybrid | Series-Parallel Hybrid | Full Hybrid | Assist Hybrid | Plug-In Hybrid Full Hybrid Vehicle Operation. . . . . . . . . . . . . . 420 All-Electric Drive Mode | Motor Assist Mode | Idle Stop Mode | Regenerative Braking Mode | Engine Starting Mode | Battery Pack Charging Mode Hybrid Battery Pack . . . . . . . . . . . . . . . . . . . . . 422 Hybrid Battery Voltage | Hybrid Battery Rating | Hybrid Battery Pack Operation | HV Battery Pack Ventilation