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Home >> Volkswagen >> 1992 >> Fox Base, 1.8 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Computerized Engine Controls >> Electronic Control Unit (AFC-DIGIFANT) >> Power Circuits
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Power Circuits

  1. Turn ignition off. Disconnect ECU connector. Turn ignition on. Using a voltmeter, check for battery voltage between ECU connector terminals No. 13 (negative) and No. 14 (positive). See Figure . If battery voltage is not present, repair wiring as required.
  2. Check terminals No. 13 (negative) and No. 1 (positive) for battery voltage. If battery voltage is not present, check fuse No. 18 on fuse block. If fuse is okay, check wiring from ECU connector to fuse box for open.
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