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Circuit/System Verification

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that all manual power seat functions operate when being controlled by the seat adjuster switches.
  2. Observe the scan tool Driver Position Module lumbar switch parameters for Seat 1 and Seat 2 while pressing the appropriate lumbar switch. The reading should change between Inactive and Active.
    • If the reading does not change between the specified values, refer to the Circuit/System Testing  for Lumbar Switch Circuit Test.
  3. If all lumbar switch inputs to the MSM function normal, refer to the Circuit/System Testing  for Lumbar Motor Control Circuit Test.
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