Preliminary Inspection

Verify customer complaint by operating suspected system. Visually inspect for obvious signs of mechanical and electrical damage. Inspect for blown fuses and damaged relays. 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. Ensure any aftermarket electronic equipment is properly installed. If fault is found, repair as necessary. If no fault is found, perform system operation check. SeeSYSTEM OPERATION CHECK  .

1. If all the power windows do not operate, check the circuit breaker 12in instrument panel fuse block.
2. Check that ground G300 is clean and tight.
3. If a motor's internal circuit breaker trips, it will not reset until voltage is removed from the motor.