tailieunhanh - Ebook Automotive suspension & steering systems: Part 2

(BQ) Part 2 book "Automotive suspension & steering systems" has contents: Computer-Controlled suspension system service, steering column and linkage diagnosis and service, power steering pump diagnosis and service, recirculating ball steering gear diagnosis and service, rack and pinion steering gear diagnosis and service, frame diagnosis and service,. And other contents. | Chapter 8 ComputerControlled Suspension System Service Upon completion and review of this chapter, you should be able to: ■ Diagnose programmed ride control (PRC) systems. ■ Perform an on-demand self-test on VDS systems. ■ Diagnose electronic air suspension systems. ■ ■ Remove, replace, and inflate air springs. Diagnose electronic suspension control (ESC) systems. ■ Adjust front and rear trim height onelectronic air suspension systems. ■ Display and interpret scan tool data on ESC systems. ■ Service and repair nylon air lines. ■ ■ Diagnose vehicle dynamic suspension (VDS) systems. Use the output controls function to diagnose ESC systems. ■ Diagnose vehicle networks. ■ Remove and replace air springs on VDS systems. Each year more vehicles are equipped with computer-controlled suspension systems, and these systems are becoming increasingly complex. Therefore, technicians must understand the correct procedures for diagnosing and servicing these systems. When a technician understands computer-controlled suspension systems and the proper diagnostic procedures for these systems, diagnosis becomes faster and more accurate. Preliminary Inspection of Computer-Controlled Suspension Systems Prior to diagnosing a computer-controlled suspension system, a preliminary inspection should be performed. The preliminary inspection may locate a minor defect that is the cause of the problem. If the preliminary inspection is not performed, a lot of time may be wasted performing advanced diagnosis when the problem is a minor defect. When the preliminary diagnosis does not locate any minor problems, further diagnosis is required. BASIC TOOLS Basic technician’s tool set Service manual Floor jack Safety stands Utility knife Machinist’s ruler or tape measure Follow these steps to complete the preliminary diagnosis: 1. Talk to the customer and find out the exact complaint regarding vehicle operation. 2. If necessary, road test the vehicle to determine the exact .