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Engine Controls - System & Component Testing - 4.3: Wiring Chevrolet Silverado 1500 HD

Testing & Diagnostics 7 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.

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Scheme 23: PCM Harness Resistance
Scheme 23: PCM Harness Resistance

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