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Home >> Porsche >> 1988 >> 928 Standard >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Program Switch Position 19 >> Right Front Control Valve
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Right Front Control Valve

Press "VR" and "LED" buttons. Digital display should be between 4.8-6.0 amps. If readout is okay, go to REAR AXLE CONTROL VALVE test. If not, repeat test with engine running. If digital display is still not okay, replace control unit.