Module-To-Coil Wire Check
- Disconnect control module 4-wire connector and ignition coil connector. Connect one ohmmeter lead to distributor base and the other to "TACH" terminal of ignition coil connector.
- Measure resistance. There should be no continuity between wire and ground. If continuity exists, check wiring harness for short circuit.
- Disconnect ohmmeter lead from distributor base. Connect meter to harness connector terminal that mates with Green wire and measure resistance. If wire shows any resistance, check wiring harness.