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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 >> Ignition Coil Power Source

Ignition Coil Power Source

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  1. Turn ignition off. Disconnect ignition coil relay harness connector. Turn ignition on. Connect negative voltmeter lead to ground. Connect positive lead to one harness Black/White wire and then to other Black/White wire. On all models, battery voltage should be present on both terminals.
  2. If battery voltage is not present, check main harness connector, 30-amp fusible link in relay block, harness continuity between ignition coil relay and ignition switch, and harness continuity between ignition coil relay and battery. Repair or replace as necessary.
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