Section 18-01: Wiring and Circuit Protection | 1996 F-150, F-250, F-350, F-Super Duty Chassis Cab, Motorhome Chassis, and Bronco Workshop Manual |
Electronic modules such as instrument clusters, powertrain controls and radios incorporate the latest technology. Some of the components used in these modules are sensitive to static electricity damage at voltage levels far below what the human body can sense. While a person cannot feel or hear the "snap" of a static discharge until the charge level is about 3000 volts, some of the electronic module components can be damaged or weakened by as little as 100 volts.
Use the following safeguards to avoid static electrical damage.
Leave the electronic modules in their original packaging until ready to install in vehicles.
Avoid touching module connector pins.
Avoid laying modules on non-conductive surfaces.
As an added safeguard, use a 3M Static Protection Kit (3M part number 18293). This kit contains special wrist straps, a 15-inch by 24-inch flexible conductive mat, grounding cords and full instructions. It is available through local 3M Suppliers.
| Activity | Relative Humidity | |
|---|---|---|
| Low (10-20%) | High (65-90%) | |
| Volts | Volts | |
| Walking Across Carpet | 35,000 | 1,500 |
| Walking over Vinyl floor | 12,000 | 250 |
| Working at Bench | 6,000 | 100 |
| Sliding Across Vehicle Seat | 25,000 | 1,000 |
Removal
Disconnect battery ground cable.
NOTE: Refer to Section 01-05 if it is necessary to remove any trim panels to gain access to the harness.
Disconnect all wiring harness connectors.
Disengage harness from all locators, straps or clips as necessary, including ground wire eyelets. Remove harness from vehicle.
Installation
NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.
Follow removal procedures in reverse order.