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Home >> Ford >> 1992 >> Escort Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Controls - System/Component Tests - EEC-IV) >> Computerized Engine Controls >> Powertrain Control Module (Pcm) >> Ground Circuits
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Ground Circuits

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 1993 Mercury Tracer, 1993 Mercury Topaz, 1993 Mercury Sable, 1993 Mercury Grand Marquis, and 1993 Mercury Cougar. 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. 40 and 60. See Figure. Resistance should be zero ohms. If resistance is not zero ohms, repair open to ground.
  2. Using a voltmeter, touch negative lead of voltmeter to a good ground. Touch positive lead of voltmeter to each ground terminal. With vehicle running, voltmeter should indicate less than 0.5 volt. If voltmeter reading is greater than 0.5 volt, check for open circuit, corrosion and loose connection on ground lead.
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