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Generator On-Vehicle Tests - Load Test

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
  1. Switch the tester to the ammeter function.
  2. Connect the positive and negative leads of the tester to the corresponding battery terminals.
  3. Connect the current probe to the generator B+ output terminal, circuit 38 (BK/OG).
  4. With the engine running at approximately 2,000 rpm, adjust the tester load bank to determine the output of the generator. The generator output should be greater than the graph shown below. If not, refer to the pinpoint test or GO to SYMPTOM CHART .
    Fig 1: Generator Output Graph
    G03992676Courtesy of FORD MOTOR CO.
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