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Generator On-Vehicle Tests - No Load Test

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
  1. Switch the tester to the voltmeter function.
  2. Connect the voltmeter positive lead to the generator B+ terminal, circuit 38 (RD) and the negative lead to ground.
  3. Turn all of the electrical accessories off.
  4. With the engine running at approximately 2,000 RPM, check the generator output voltage. The voltage should be between 13.2 and 15.5 volts. If not, refer back to the pinpoint test or go to Symptom Chart .
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