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Performance Test Using Conventional Tester

  1. Attach tester as illustrated and increase engine speed until reverse current (approximately 2.5 amp.) ceases to flow to rotor field coil.
  2. Turn off No. 1 switch and increase speed until voltmeter indicates 14V. If speed is under 1000 RPM, alternator performance is satisfactory.
  3. Increase load resistance to near maximum so that nearly no current will flow. Close switches 1 and 2 while gradually increasing speed. Rated output should be reached by approximately 5000 RPM with satisfactory alternator.
    Fig 1: Conventional Tester Connections
    G09322941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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