Body, generic

B0322 Driver Seat Tilt Position Sensor

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0322 lacks any public definition, either in J2012 lists or from a manufacturer. The title describes the sensor reporting the cushion tilt of the power driver seat, normally made by raising or lowering the front edge. Saab's 9-3 driver seat module calls it the tilt position sensor and stores B3923: 01 above 7 ± 0.2 V, 02 when shorted to ground, 04 for an open line and 29 when no pulses arrive while the engine runs. Memory recall then stops and the end-stop calibration of the tilt motor is lost. US4682088A measures front and rear cushion height with potentiometers, while US6320341B1 restores the front cushion portion by pulse counting. Fore-aft feedback is B0310.

Likely causes

Sensor in the cushion tilt motor failed
Tilt motor wiring pinched in the seat frame
Shared sensor supply shorted or open
Seat module input stage defective

Symptoms

  • Cushion tilt not restored by memory recall
  • Tilt adjustment jerks or stops before the end

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–500
Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

seat position sensorseat module

Related codes

B0310B0561

References: saabwisonline.com, saabwisonline.com, patents.google.com, patents.google.com.