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Home >> Ford >> 1990 >> Bronco II RWD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Dis Ignition System Check - No Start (2.3L) >> Test 7, Check Dis Module VBAT
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Test 7, Check Dis Module VBAT

Install diagnostic cable. Connect diagnostic cable to breakout box. Use the 2.3L overlay. connect LED test lamp between (-) J2 (IGN D) and (+) J5 (VBAT D). Turn key on. Is LED test light on? If yes, go to TEST 8. If not, check connectors, service or replace harness and check for fault codes. See TESTS W/CODES article.

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