Alternator/Regulator Circuit Test

Voltage regulator tester (CTW-1170) must be used for this check. With alternator in vehicle, turn tester off. Plug the on-vehicle testing cable in place on tester. Disconnect regulator connector from alternator. Plug the on-vehicle testing cable in its place. Connect ground lead to alternator case.

Test circuit using steps 2), 3), 4)  and 15)  under instructions listed on tester cover. If proper voltage indication is not obtained or lamps flicker off and on when performing test, regulator must be removed from vehicle for further testing.