9-3 SE Convertible (9400) L4-2.0L Turbo (B205) HO (2001)
A short-circuit to ground does not result in a diagnostic trouble code, the rheostat level is at "max" and cannot be altered with the rheostat.
A short-circuit to B+ will destroy the rheostat.
Interior Light Sensor
Interior light sensor
The sensor that measures the light intensity in the car is integrated in the SID unit. The measurement range is 0 - 1200 lux.
The SID unit uses the value to calculate the appropriate display lighting. The value is output as bus information "INTERIOR LIGHT INTENSITY" in
lux.
Sound
Sound