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Ignition Coil Test
- Turn ignition off. Remove distributor cap. Remove screws and disconnect Black/Yellow wire and White/Black wire from coil. Measure primary winding resistance between primary terminals "A+" and "B-" on ignition coil. See Fig 1
. Resistance should be 0.45-0.55 ohm at 68°F (20°C).
- Measure secondary winding resistance between coil terminal "A+" and secondary terminal (coil tower). Resistance should be 16,800-25,200 ohms at 68°F (20°C). Replace coil if resistance is not within specifications.
Courtesy of AMERICAN HONDA MOTOR CO., INC.