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Primary Circuit Continuity Check
- Insert a small straight pin in control module Green wire. Attach voltmeter negative lead to distributor base, and positive lead to pin in Green wire. Measure voltage with ignition switch in "RUN" position.
- Turn ignition off and remove straight pin from Green wire. If voltage reading was over 1.5 volts, proceed to GROUND CIRCUIT CONTINUITY CHECK. If voltage reading was below 1.5 volts, inspect wiring between module and coil.