Ignition Coil Resistance

Turn ignition off. Remove distributor cap. Remove 2 Phillips screws retaining primary ignition leads to ignition coil. Remove primary leads from ignition coil. Using an ohmmeter, check resistance between primary terminals "A" and "B" on ignition coil. See Fig 1 . Resistance should be as specified. See TACH PULSE SIGNAL .
Check secondary resistance between terminal "A" and secondary output terminal (coil tower) at room temperature. See TACH PULSE SIGNAL . If readings are not as specified, replace ignition coil.

Fig 1: Identifying Ignition Coil Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.