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Home >> Porsche >> 1985 >> 928 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Program Switch Position 19 >> Control Unit Valve Flow (Pressure Dropping)

Control Unit Valve Flow (Pressure Dropping)

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Press "LED" button. Press button each time new valve is selected. If digital display is "0", press button again (pump motor starts twice). Go to LEFT FRONT CONTROL VALVE test.