Primary Circuit Continuity Check
- Insert a small straight pin in control module Green wire. Connect negative voltmeter lead to distributor base, and positive lead to pin in Green wire.
- With ignition switch in "RUN" position, measure voltage. Turn ignition switch "OFF" and remove straight pin from Green wire.
- If voltage reading was greater than 1.5 volts, proceed to "Ground Circuit Continuity Check". If voltage reading was 1.5 volts or less, inspect wiring between module and coil.