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Starter Ground Circuit Test

WARNING: This page is about a different car, the 2002 Ford Pickup, 2002 Ford F550 Super Duty, 2002 Ford F450 Super Duty, 2002 Ford Excursion, and 2002 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Make all DVOM connections at component terminal rather than at cable or wire end.
  1. On gasoline engines disconnect ignition coil connector from ignition coil. On diesel engines, disconnect inertia fuel shutoff switch connector. On all models, connect remote starter switch between starter solenoid terminal "S" and positive battery post. Connect positive DVOM lead to starter housing and negative lead to negative battery post. See Fig 1.
  2. Engage remote starter switch while observing DVOM. DVOM should indicate .2 volt or less. If DVOM indicates more than .2 volt, clean negative cable connections at battery and chassis. Also clean engine ground cable connections at front cover and engine mount bracket.
  3. If voltage drop is still excessive, repair or replace negative battery cable and/or engine ground cable as necessary. Repeat starter ground circuit test after repair to ensure problem has been corrected.
  4. If battery and cables test okay and starter motor still cranks slowly or not at all, replace starter motor. See STARTER MOTOR  under REMOVAL & INSTALLATION.
Fig 1: Testing Starter Ground Circuit
G98E01756Courtesy of FORD MOTOR CO.
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