Alternators - NIPPONDENSO: Overhaul: Testing: Stator
Use ohmmeter to check stator coil for ground. To check stator for open circuit, stator leads must be disconnected from diode leads. To disconnect leads from diodes, unsolder as quickly as possible and with a low-watt iron. Check four leads of stator coil for conduction between each lead. If ohmmeter shows no conduction, stator coil is open and must be replaced. Resistance should be zero.