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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 .3-.4 ohms at room temperature. Check resistance between terminals "B" and "D" of ignition coil (tachometer circuit). Resistance should be about 2090-2310 ohms at room temperature.
  2. Check secondary resistance between terminal "A" and secondary output terminal (coil tower). See IGNITION COIL RESISTANCE  table.
  3. Check for continuity between terminals "A" and "C". Continuity should exist. If readings are not within specification, replace coil.
    Fig 1: Identifying Ignition Coil Terminals (Prelude)
    G117894Courtesy of AMERICAN HONDA MOTOR CO., INC.
    TIMING CONTROL SENSOR USAGE

    Application Sensor/System
    Prelude TDC/CRANK & CYL Sensors
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