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Home >> Porsche >> 1985 >> 928 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Program Switch Position 13 >> Control Unit Power Supply

Control Unit Power Supply

Press "LED" button. Digital display should read between 4.75-5.25 volts. If readout is okay, go to PROGRAM SWITCH POSITION 14 . If not, replace control unit.

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