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Home >> Mazda >> 1996 >> B3000 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 172 (Engine Controls - System/Component Tests - EEC-IV (5.0L)) >> Computerized Engine Controls >> Powertrain Control Module (Pcm) >> Ground Circuits
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Ground Circuits

WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford Econoline, 1995 Ford Club Wagon, and 1995 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using a DVOM, check for continuity to ground on PCM terminals No. 20, 40 and 60. See Figure . Resistance should be zero ohms. If resistance is not zero ohms, repair open to ground.
  2. Touch negative lead of voltmeter to a good ground. With vehicle running, backprobe positive lead of voltmeter to each ground terminal. Voltmeter should indicate less than one volt. If reading is greater than one volt, check for open, corrosion or loose connection on ground lead.
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