Massage Operation

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

With the ignition in the ON position, battery positive voltage is supplied to the driver and front passenger lumbar massage switches from the memory seat module (MSM). When the switch is momentarily pressed to initiate massage operation, battery voltage is applied through the switch contacts and the lumbar massage switch signal circuit to the MSM. In response to this signal, the MSM then cycles battery positive voltage and ground through the lumbar motor up and down control circuits to the lumbar vertical motor. The motor will then continuously move the lumbar support 50 mm in both the up and down directions for 10 minutes or until the lumbar switch is momentarily pressed to cancel the operation. When massage operation has ceased, the MSM will return the lumbar support to the position from which massage was initiated.

During massage operation, the lumbar horizontal support can be adjusted without interruptions to the massage cycle by operating the lumbar switch in either the forward or rearward directions. However, manually moving the lumbar vertical switch in either the up or down directions will cancel the massage operation and move the lumbar support in the desired direction.