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Home >> Infiniti >> 1995 >> Q45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing 4.5L >> Ignition Checks >> DISTRIBUTORLESS Ignition System Checks >> Ground Circuit
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Ground Circuit

  1. Turn ignition off. Disconnect ignition coil sub-harness connector and ignition coil relay harness connector. Check continuity between ignition coil relay harness connector terminal No. 5 (Brown/Yellow wire) and ignition coil sub-harness connector Brown/Yellow wire. Continuity should be present. If continuity is not present, check harness connector to ECM and ignition coil sub-harness connector.
  2. On all models, 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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