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Ignition Coil Resistance

  1. Remove primary and secondary leads from ignition coil. Using an ohmmeter, check resistance between primary terminals "A" and "D" of ignition coil. See Fig 1 . Resistance should be 1.2-1.5 ohms at room temperature. Check resistance between terminals "B" and "D" of ignition coil. Resistance should be about 2200 ohms at room temperature.
  2. Check secondary resistance between terminal "A" and secondary output terminal (coil tower). Resistance should be 9040-13,560 ohms at room temperature.
  3. Check for continuity between terminals "A" and "C". Continuity should exist. Replace coil if all readings were not within specification.
    Fig 1: Accord & Prelude Ignition Coil Terminal Identification
    G117894Courtesy of AMERICAN HONDA MOTOR CO., INC.
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