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Current Output

  1. Connect test equipment the same as for Charging Circuit Resistance test, move negative lead of voltmeter to a good ground and then move the positive lead of voltmeter to "BAT" terminal of alternator. Start engine and operate at idle.
    CAUTION: To avoid damage, reduce engine speed to idle immediately after starting.
  2. Adjust engine speed and carbon pile until a speed of 1250 RPM and a voltmeter reading of 15 volts is obtained.
    CAUTION: Increases in engine speed should not be large enough to allow voltage to exceed 16 volts.

    Observe ammeter, current output should be within specifications. If output is 5-7 amps less than specified, it may be an indication of an open rectifier. If output is considerably lower, it may be an indication of a shorted rectifier.

    Fig 1: Current Output Test
    G09333168Courtesy of CHRYSLER GROUP, LLC
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