Preliminary Inspection

Before proceeding with specific testing, check condition of appropriate power supply fuse. See WIRING DIAGRAMS  . Check power seat system operation. Ensure power accessory circuit breaker is okay. Ensure ground connections are clean and tight. Check for broken or partially broken wires inside insulation which could cause system malfunction, but prove good in a continuity/voltage check with system disconnected. These circuits may be intermittent or have high resistance when loaded. If possible, circuits should be checked by monitoring voltage drop with system operational (under load). Check for proper installation of aftermarket electronic equipment.