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Home >> Subaru >> 2001 >> Outback Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Engine Controls - System & Component Testing) >> Computerized Engine Controls >> Electronic Control Module (ECM) >> Ground Circuits
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Ground Circuits

WARNING: This page is about a different car, the 2002 Subaru Outback, 2002 Subaru Legacy, 2002 Subaru Impreza, and 2002 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Using ohmmeter connected to ground, backprobe each ECM ground terminal. For ECM ground terminal identification, see appropriate pin voltage chart in PIN VOLTAGE CHARTS article. Resistance should be zero ohms. If resistance is not close to zero ohms, repair open to ground.
  2. Start engine. Using voltmeter connected to ground, backprobe each ground terminal. Voltage should be less than one volt. If voltage is more than one volt, check for open, corrosion, or loose connection on ground lead.
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