Preliminary Inspection

Verify customer complaint by operating power mirror system. Visually inspect for obvious signs of mechanical and electrical damage. Inspect fuses. Replace if blown. Inspect for loose or corroded connections, damaged wiring harnesses and/or switches. Check for a broken or partially broken wire inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. If fault is found, repair as necessary. If problem still exists, diagnose by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.