PCM Harness Resistance

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

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.

Fig 1: Identifying PCM Connector C1 Terminals (1 Of 2)

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Fig 2: Identifying PCM Connector C1 Terminals (2 Of 2)

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Fig 3: Identifying PCM Connector C2 Terminals (1 Of 2)

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Fig 4: Identifying PCM Connector C2 Terminals (2 Of 2)

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