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Home >> Pontiac >> 1990 >> LeMans Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Computerized Engine Controls >> Power Circuit

Power Circuit

  1. With ignition off, disconnect ECM connectors. With ignition switch in the ON position, check for battery voltage between ECM terminal connector A6 (Red/White/Black wire) and ground.
  2. If battery voltage is not present, check fuse No. F10 (20-Amp) in fuse panel. See Fig 1 . If fuse is okay, check for an open in Red/White/Black wire between fuse panel and ECM terminal connector A6. If wire okay, check for defective ignition switch.
Fig 1: Locating Engine Performance Components
G121781Courtesy of GENERAL MOTORS CORP.
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