Preliminary Inspection

Visually inspect wiring and components for system in question. Inspect battery charge level to ensure battery is fully charged. Check for open fuses. Inspect all related vacuum and electrical circuits for pinches, cuts or disconnects. Repair as necessary. If area of fault is not located with visual inspection, check operation of self-diagnostic system. See VEHICLE ON-BOARD DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.