9-3 Viggen Coupe (9400) L4-2.3L Turbo (B235) HO (1999)
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The control module transmits a pressure signal from pin 20 in the form of a voltage depending on the pressure in the intake manifold. At 100 kPa
(atmospheric pressure), the voltage will be approx. 1.0 V.
The pressure signal is used by the main instrument unit, which also uses the sensor ground from pin 67 as a reference ground for hhhhh pressure
readings.
Diagnosis
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.
