Under Voltage Test

NOTE: Perform this test if voltmeter indicates less than 0.5 volt above base voltage.

Mitsubishi Alternator:

1. Disconnect wiring connector from regulator and connect jumper wire from wiring connector "I" terminal to battery negative post.
2. Turn ignition switch to RUN position with engine OFF.
3. If charging system indicator bulb does not light, check bulb and replace as necessary.
4. If bulb is in good condition, service "I" circuit.
5. If bulb lights, remove jumper wire and connect suitable voltmeter negative lead to battery negative post and positive lead to regulator wiring connector terminal "A."
6. If battery voltage is not indicated, service "A" circuit.
7. If battery voltage is indicated, clean and tighten ground connections to engine and alternator.
8. Turn ignition switch to RUN position with engine OFF.
9. If indicator still does not light, replace alternator.