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Home >> Volkswagen >> 1990 >> Cabriolet Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Control Unit (Cis-MOTRONIC) >> Ground Circuits
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Ground Circuits

Using Multimeter (US 1119), check resistance of ground circuits to ECU. The ECU engine ground is near ignition distributor. Remove ECU connector. Check resistance to ground on terminal No. 35. Resistance should be zero ohms. If resistance is not zero ohms, repair open or short in wiring.