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Home >> Chevrolet >> 2012 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 406 (Power Seat System) >> Diagnostic Information and Procedures >> Lumbar Support Inoperative >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the lumbar switch.
  2. Test for less than 10 ohm between the ground circuit terminal E and ground.
    • If greater than the specified value, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal G and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, connect the harness connector at the lumbar switch and disconnect the harness connector at the lumbar motor.
  5. Ignition ON, verify that the test lamp illuminates between control circuit terminal A and control circuit terminal B while pressing the lumbar switch in both directions.
    • If the test lamp does not illuminate for both directions, test the control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the lumbar switch.
  6. If all circuits test normal, test or replace the lumbar motor.
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