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Engine Control System & Component Tests - 4.3L: Wiring GMC Savana H2500

Testing & Diagnostics 4 illustrations

PCM Harness Resistance

Turn ignition switch to LOCK position. Disconnect PCM and appropriate component harness connectors. Check for open or short circuits between appropriate PCM harness connector terminal and appropriate component harness connector terminal. If harness is open or shorted, repair as necessary.

Scheme 13

Scheme 13: PCM Harness Resistance
Scheme 13: PCM Harness Resistance

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