Preliminary Inspection

Check PWR WDO (25-amp) circuit breaker. Ensure grounds are clean and tight. Check for broken or partially broken wire inside insulation which would cause system failure but prove good in continuity/voltage check. If only master window switch assembly operates windows, ensure lock-out is not engaged (4-door). Ensure proper installation of aftermarket electronic equipment that may affect integrity of other systems. If no problem is found, repair by symptom. See SYMPTOM INDEX  table under SYMPTOM TESTS.