Contents 15 Copyright by Goodheart-Willcox Co., Inc. Sound System Service. . . . . . . . . . . . . . . . . . . 594 Radio Service | Radio Noise | Antenna Service | Speaker Service | Tape Player Service | CD Player Service | Amplifi er Service Heater and Air Conditioning Circuit Service . . . 604 Blower Switch Service | Blower Resistor Pack Service | Blower Motor Service | Climate Control Sensor Service Cruise Control System Service. . . . . . . . . . . . . 607 Chapter 31 Restraint System Service . . . . . . . . . . . . 611 Seat Belt and Belt Retractor Service. . . . . . . . . 612 Seat Belt Inspection | Seat Belt Service | Belt Retractor Service Air Bag System Service . . . . . . . . . . . . . . . . . . 613 Scanning an Air Bag System | Air Bag Module Service | Disarming an Air Bag | Manual Air Bag Deployment | Air Bag Disposal | Air Bag Installation Air Bag Sensor Service . . . . . . . . . . . . . . . . . . 619 Air Bag ECU Service . . . . . . . . . . . . . . . . . . . . 620 Chapter 32 Chassis Systems Diagnosis and Repair . . . . . . . . . . . . . . 623 ABS Diagnostics . . . . . . . . . . . . . . . . . . . . . . . 624 ABS Warning Light | ABS Service | ABS Inspection | ABS Scanning | ABS Pinpoint Tests | ABS Speed Sensor Service | ABS Modulator Check | ABS Modulator Service | ABS Bleeding | Brake Pedal Stroke Sensor Service | ABS Test- Drive | Brake Pad Wear Sensor Service Tire Pressure Sensor Service . . . . . . . . . . . . . . 631 Traction and Stability Control System Service. . 631 Computerized Suspension Diagnosis. . . . . . . . 631 Height Sensor Service | Compressor Service | Electronically-Controlled Shock Service Electronic Assist Steering Service. . . . . . . . . . . 633 Cruise Control System Service. . . . . . . . . . . . . 633 Servicing Engine Electronics . . . . . . . . . . . . . . 634 Electronic Engine Th rottle Service | Engine Electric Water Pump Service | Engine Crankshaft and Camshaft Sensor Service | Knock Sensor Testing | Engine Oil Level Sensor Service | Engine ECU Service Electronic Transmission Control System Service . . . . . . . . . . . . . . . . . . 638 Chapter 33 Hybrid Drive Systems Diagnosis and Repair . . . . . . . . . . . . . . 643 Hybrid Problem Diagnosis . . . . . . . . . . . . . . . . 644 Hybrid Service Safety. . . . . . . . . . . . . . . . . . . . 644 Remove Jewelry | Wear Eye Protection | Wear Insulating Gloves | Wear Rubber-Soled Shoes | Keep a Fire Extinguisher Nearby | Follow Towing Safety Procedures | Disable the Hybrid Drive When Working | Set Up a High-Voltage Buff er Zone | Remove the High-Voltage Disconnect Hybrid Battery Pack Service . . . . . . . . . . . . . . . 648 Battery Pack Recharging | Battery Pack Testing | Battery Pack Replacement Checking HV Battery Pack Relays and Contactors . . . . . . . . . . . . . . . . . . . .650 Hybrid Power Cable Service. . . . . . . . . . . . . . . 650 Power Control Module Service. . . . . . . . . . . . . 651 Hybrid Cooling System Service . . . . . . . . . . . . 652 Motor-Generator Service . . . . . . . . . . . . . . . . . 652 Hybrid Wiring Problems. . . . . . . . . . . . . . . . . . 653 Chapter 34 Advanced Diagnostics . . . . . . . . . . . . . 657 Strategy-Based Diagnostics . . . . . . . . . . . . . . . 658 Isolating Electromagnetic Interference. . . . . . . 659 Using a Digital Thermometer . . . . . . . . . . . . . . 660 Finding Temperature-Related Performance Problems . . . . . . . . . . . . . . . . . . 660 Finding Moisture-Related Problems . . . . . . . . . 661 Using a Dynamometer. . . . . . . . . . . . . . . . . . . 661 Checking ECU Terminal Values. . . . . . . . . . . . . 662 Using a Breakout Box . . . . . . . . . . . . . . . . . . . 662 Cranking Balance Test Advanced Scan Tool Tests. . . . . . . . . . . . . . . . . 663 Scan Tool Snapshot | Scan Tool Datastream Values | Scan Tool Actuator Tests | Power Balance Test | OBD II Drive Cycle