2011 mazda 3 dsc combined sensor
 

Does anyone know where the dsc combined sensor is located? Repair manual says it's supposed to be located under the passenger seat. On a bracket but there is nothing there. The car has abs w/ dsc. Been having issue with abs pump. (Replaced), but still issue with longitudinal acceleration rate. Scan tool shows its way off spec. Manual says sensor is is combined with yaw sensor and latitudinal sensor. Looking to inspect and replace but not in area it supposed to be. Could it be in middle console? Has anybody had issue with combined sensor before?