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Home >> Ford >> 1981 >> Escort Base, 2D Hatchback >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> MOTORCRAFT DURA-Spark II Ignition Systems >> Testing >> Module Start Circuit Check
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Module Start Circuit Check

  1. If starter relay has an "I" terminal, disconnect cable from relay to motor. If there is no "I" terminal, disconnect wire at "S" terminal of relay.
  2. Hold ignition switch in "START" position. Connect voltmeter positive lead to ignition coil positive ("BATT") terminal and negative lead to ground. See Figure. Take reading. Then insert a straight pin in white wire of ignition module 2-wire harness (between module and connector). See Figure. Attach positive lead of voltmeter to pin, with negative lead still grounded. Again, do not let pin touch ground. Turn ignition switch "OFF" and reattach starter relay wires.
  3. Readings in both instances should be 90 percent of battery voltage while cranking. If so, proceed to "Distributor Stator Assembly Check ". If less than 90 percent, proceed to "Wiring Harness Shorts Check ". Also check ballast resistor by-pass circuit, replace damaged wiring harnesses, and check for worn or damaged ignition switch.
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