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Home >> Dodge and Ram >> 1990 >> Caravan Base, 2.5 K, Standard >> Repair and Diagnosis >> Electrical >> Charging Systems >> Alternator - Except BOSCH >> Diagnostic Testing >> Checking Charging System Field Control Circuit

Checking Charging System Field Control Circuit

  1. Turn ignition off. Disconnect 60-pin connector from SMEC. Connect a voltmeter between F2 cavity in dash panel connector and ground.
  2. Connect one end of a jumper wire to cavity No. 14 of 60-pin SMEC connector. Turn ignition on. Very quickly touch other end of jumper wire to ground, observe voltmeter.
  3. If voltmeter reading is 0-1 volt, replace SMEC. If voltmeter does not show 0-1 volt, check wiring for open circuit between SMEC 14-pin and 60-pin connectors.