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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heater, Diagnosis - 911 CARRERA (996) >> Fault code 28 - as of MY 2002 >> Footwell/defrost valve motor - No reaction to activation, signal unclear >> Affected pins

Affected pins

Connector B, pin 3, pin 9, and pin 20

Plug D, pin 3 and pin 11

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