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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1183 (Power Seat System) >> Diagnostic Information and Procedures >> Lumbar Support Inoperative (with Memory A45) >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that none of the Memory Seat Module Lumbar Switch parameters are Active while the switch is in an inactive state.
  2. Observe the scan tool Lumbar Switch parameters while pressing the related lumbar switch. The reading should change between Inactive and Active.
  3. If the lumbar switch inputs to the MSM function normal, refer to Motor Control Circuit Test .