Diode Test
- Adjust ohmmeter to the x1 scale. Remove rectifier assembly from alternator. Place ohmmeter probe on terminal bolt. Touch remaining probe on each of the 3 stator lead terminals. Note ohmmeter reading. Reverse probes and repeat test.
- Diodes should show a reading of approximately 6 ohms in one direction, and infinite readings with probes reversed. Repeat test for remaining set of diodes using the other terminal screw. Replace rectifier assembly if readings are not within specification.