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Home › Ford › 1991 › Explorer 2D Utility, RWD, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls - Basic Testing › Electronic DISTRIBUTORLESS Ignition System (EDIS) 4.0L Engine › Test 1, Check ECA For Fault Codes

Test 1, Check ECA For Fault Codes

Repair any fault codes as necessary. See TESTS W/CODES article in the ENGINE PERFORMANCE Section. If no fault codes are retrieved, proceed to next test.