Stator Coil Open Test

NOTE: On 100-amp alternators having a "delta" connected stator, a single open phase cannot be detected.

Remove stator from alternator. Set ohmmeter on "x1" scale. Connect one ohmmeter probe to stator lead and other probe to another stator lead. If no meter movement occurs, stator coil is open and must be replaced. Repeat tests with other stator leads.