Electronic Control Module (ECM): 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 ECM or other electronic components containing integrated circuits. Before servicing ECM, ground yourself and ground work area to discharge stored electricity.
STATIC CHARGE(VOLTS)
| Movement | 10-20% (1) | (1) 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 | ||
|
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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 1.
NOTE:
Before replacing ECM, carefully inspect all wiring and control components. Failure to test for short circuits may result in repeated ECM failure due to grounds and Quad-Driver failure. To prevent internal damage to ECM, ensure ignition switch is in OFF position when disconnecting or reconnecting ECM connectors or 12-volt components.