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Home >> Mercury >> 1981 >> Lynx GL, 2D Hatchback, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> MOTORCRAFT DURA-Spark II Ignition Systems >> Testing >> Module Input Check
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Module Input Check

  1. Disconnect 4-wire module connector. Connect positive lead of voltmeter to terminal in harness connector that mates with module green wire. Connect negative lead to engine ground. Turn ignition switch to "RUN" position, take reading and turn switch "OFF".
  2. If voltage is less than 90 percent of battery voltage, proceed to "Coil Harness Continuity Check ". If more than 90 percent of battery voltage but engine will not start, suspect control module.
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