MOTORCRAFT EEC Ignition Systems: Testing: Notes

NOTE: The following procedures will test the Dura-Spark module as it relates to the control assembly. To test the rest of the ignition system (coil voltage output, power feed to ignition module) refer to MOTORCRAFT DURA-SPARK II IGNITION SYSTEMS in this section.

Fig 1: EEC III Ignition Module Run Mode Test

Courtesy of FORD MOTOR CO.

CAUTION: Different diagnostic and service procedures are required for EEC II than EEC III. To identify the EEC II vehicles, look for (1) silver engine decal rather than gold tone used for EEC III, (2) red vinyl tag near EEC module connector, marked "EEC II", (3) a paper tag on rear of calibration assembly, marked "GA" or "K" for EEC II, and (4) on EEC II vehicles, the calibration assembly does not fill out mounting area on processor assembly.

NOTE: On EEC II models, a retaining ring is used to hold the bolt in place in harness connector. If harness connector is removed from EEC II module, remove and discard retaining ring. If this ring is not removed, damage to module may result.

CAUTION: Whenever the EEC harness connector is removed from the processor assembly, use a torque wrench to tighten EEC connector retaining bolt to 20-25 INCH lbs. Damage to either EEC assembly or connector can result from overtightening.