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PCM Harness Resistance

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

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. See Fig 1 -Fig 6 . See WIRING DIAGRAMS  . If harness is open or shorted, repair as necessary.

Fig 1: Identifying PCM Connector C1 Terminals (1 Of 3)
G00114969Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying PCM Connector C1 Terminals (2 Of 3)
G00114970Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying PCM Connector C1 Terminals (3 Of 3)
G00114971Courtesy of GENERAL MOTORS CORP.
Fig 4: Identifying PCM Connector C2 Terminals (1 Of 3)
G00114972Courtesy of GENERAL MOTORS CORP.
Fig 5: Identifying PCM Connector C2 Terminals (2 Of 3)
G00114973Courtesy of GENERAL MOTORS CORP.
Fig 6: Identifying PCM Connector C2 Terminals (3 Of 3)
G00114974Courtesy of GENERAL MOTORS CORP.
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