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Home >> Ford >> 1991 >> Cutaway 7.3 M >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Basic Testing >> Electronic DISTRIBUTORLESS Ignition System (EDIS) 4.0L Engine >> Test 14, Check For VBAT Open To EDIS Module
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Test 14, Check For VBAT Open To EDIS Module

With key off and ECA disconnected, set DVOM to 20-volt scale. Measure voltage between breakout box pins No. (+) J51 (VBAT E) and (-) J7 (BAT -). If voltage is greater than 10.5 volts, go to next test. If voltage is less than 10.5 volts, repair open circuit. Remove all test equipment, reconnect all components and check for fault codes.