Powertrain Control Module (Pcm): Notes
CAUTION:
Electronic components used in control systems are designed to carry very low voltages. As little as a 30-volt charge created by static electricity can cause a total or degrading failure in PCM or other electronic components containing integrated circuits. Before servicing PCM, technician must ground himself and the work area to discharge static electricity.
STATIC CHARGE
| Movement | Relative Humidity 10-20% | Relative Humidity 65-90% |
|---|---|---|
| Handling Clear Plastic Bag | 20,000 | 1200 |
| Handling Vinyl Envelope | 7000 | 600 |
| Sliding On Velour Seat | 15,000 | 400 |
| Walking On Carpet | 35,000 | 1500 |
| Walking On Tile/Vinyl | 12,000 | 50 |
CAUTION:
DO NOT remove part from packaging until ready to install. Ground any static-proof package before opening. DO NOT touch electrical terminals of components unless properly grounded. DO NOT lay electrical components on car seat, carpeting or dashboard. Use electrostatic protection mat and ground strap whenever possible. See Fig 2.
NOTE:
Before replacing PCM, carefully inspect all wiring and control components. Failure to test for short circuits may result in repeated PCM failure due to shorts and Quad-Driver failure. To prevent internal damage to PCM, ensure ignition switch is in OFF position when connecting or disconnecting PCM connectors or any electrical components.
NOTE:
When replacing defective PCM, remove knock sensor module or PROM from defective PCM. New PCM does not come equipped with knock sensor module or PROM (if applicable). Install knock sensor module or PROM into new PCM.