9-3 Coupe (9400) L4-2.0L Turbo (B205) (2001)
respective G33P (RHD).
Sensor ground
All sensors are grounded from the ACC control module.
Diagnosis
If ground is missing, the display will not light up when the ignition is turned on.
If the sensor is shorted to 5 V or B+, diagnostic trouble code B2945 is generated, 23 is shown instead of temperature at calibration.