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Home >> BMW >> 1994 >> 850CSi >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self Diagnostics >> Component Tests >> DME Main Relay >> Check Function
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Check Function

With ignition ON or during engine operation, main relay is actuated with ground potential at terminal No. 85 (display: ON). The relay switches on and supplies voltage to DME, EGS, EML and ABS control units.