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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Diagnostic Information and Procedures >> DTC B1850 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode.
  2. Verify the scan tool Driver Seat Lumbar Support Horizontal Position parameter is between 0.22 V and 4.75 V and changes when commanding the lumbar support froward and rearward.
    • If not between 0.22 V and 4.75 V or does not change 

      Refer to Circuit/System Testing.

    • Go to next step: If between 0.22 V and 4.75 V and changes 
  3. All OK.
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