Self-Diagnostic System: Notes
WARNING: This page is about a different car, the 1996 Saab 9000. However, it is still accessible from the selected car via links, so may be relevant.
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 the ECM or other electronic components containing integrated circuits. Before servicing such components, ground yourself and the work area to discharge stored static electricity. Repeat grounding process periodically during service procedure.