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Home >> Ford >> 1983 >> Bronco 5.0 F, Automatic >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - DURA-Spark III >> Testing >> Module-To-Coil Wire Resistance Check

Module-To-Coil Wire Resistance Check

  1. Disconnect ignition coil connector from ignition coil, and disconnect ignition module 3-wire connector. Connect ohmmeter leads to engine ground and "TACH" terminal of ignition coil connector.
  2. Measure resistance. Remove ohmmeter leads, reconnect ignition module and coil connectors.
  3. If resistance was greater than 1 ohm, replace ignition module. If resistance was 1 ohm or less, inspect wiring harness between ignition module and ignition coil.
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