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Home >> Infiniti >> 1994 >> J30 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks >> DISTRIBUTORLESS Ignition System Checks >> Ground Circuit
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Ground Circuit

  1. Turn ignition off. Disconnect ECM harness connector. Check continuity between engine ground and ECM harness connector terminals No. 10, 20, 50, 60, 107, 108 and 116 (Black wires). Continuity should be present. If continuity is not present, repair harness or connector.
  2. Disconnect power transistor unit harness connector. Check continuity between Black wire on harness connectors and ground. Continuity should be present. If continuity is not present, check harness connector between power transistor unit and engine ground.
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