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Home >> Ford >> 1991 >> Explorer 4D Utility, 4WD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Electronic DISTRIBUTORLESS Ignition System (EDIS) 4.0L Engine >> Test 10, Check Pip Circuit For Short To Power
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Test 10, Check Pip Circuit For Short To Power

With key off and ECA disconnected, set DVOM to 2-k/ohm scale. Measure resistance between breakout box pins No. J43 (PIP E) and J1 (BAT +). If resistance is less than 5 ohms, PIP is shorted in harness. Check connectors, and repair or replace harness. Check for fault codes. If resistance is greater than 5 ohms, replace ECA. Clear Continuous Memory, and check for fault codes.