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Home >> Ford >> 1977 >> Bronco Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> MOTORCRAFT DURA-Spark II Ignition System >> Testing >> Short Test
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Short Test

Check resistance between pin No. 1 and engine ground. If less than 4 ohms, check for short-to-ground at coil primary terminals and in primary wiring to coil. Repair as required.