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Engine Control System - System Testing & Engine Component Tests: Wiring Oldsmobile Alero I

Testing & Diagnostics 5 illustrations

PCM Harness Resistance

Turn ignition switch to LOCK position. Disconnect PCM and related component harness connectors. Check for open or short circuits between PCM harness connector terminal and component harness connector terminal. (Scheme 48) See WIRING DIAGRAMS article. If harness is open or shorted, repair as necessary.

Scheme 48

Scheme 48: PCM Harness Resistance

Scheme 49

Scheme 49

Scheme 50

Scheme 50

Scheme 51

Scheme 51

Scheme 52

Scheme 52