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Home >> Plymouth >> 1979 >> Arrow Pickup Base >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Electronic Ignition >> Testing >> Electronic Control Unit Ground Circuit

Electronic Control Unit Ground Circuit

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Connect one ohmmeter lead to a good ground and other lead to ECU pin No. 5. Ohmmeter should show continuity between ground and connector pin. If continuity does not exist, tighten bolts holding ECU to firewall. Recheck continuity. If continuity is still not present, replace ECU.