9-3 SE Sedan (9400) L4-2.0L Turbo (B204) HO (1999)
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The pressure signal is used by the main instrument unit, which also uses the sensor ground from pin 67 as a reference ground for curate pressure
readings.
Diagnosis
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No diagnosis. In case of a break or short circuit to ground on any of the two leads, the turbo gauge will show minimum value.
