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Starter Ground Circuit Test

WARNING: This page is about a different car, the 2003 Mercury Sable, 2003 Ford Taurus, 2002 Mercury Sable, and 2002 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Make all voltmeter connections at component terminal rather than at cable or wire end.
  1. Disconnect inertia fuel shut off switch. Connect remote starter switch between starter solenoid terminal "S" and positive battery post.
  2. Connect positive voltmeter lead to starter housing, and negative lead to negative battery post. Engage remote starter switch while observing voltmeter. Voltmeter should indicate .3 volt or less. If voltmeter indicates more than .3 volt, clean negative cable connections at battery and engine.
  3. If voltage drop is still excessive, repair or replace negative battery cable and/or engine ground cable as necessary. Repeat starter circuit test after repair to ensure problem has been corrected. If battery and cables test okay and starter motor still cranks slowly, replace starter.
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