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Home >> Chevrolet >> 2006 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Lighting Systems) >> Diagnostic Information and Procedures >> Interior Backlighting Malfunction >> Circuit/System Testing >> Front Door Switch Backlighting Circuit Test

Front Door Switch Backlighting Circuit Test

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the inoperative heated and cooled seat switch.
  2. Verify that a test lamp illuminates between the appropriate low reference circuit terminal listed below and B+.
    • Driver Heated and Cool Seat Switch terminal 3
    • Passenger Heated and Cool Seat Switch terminal 5
    • If the test lamp does not illuminate, test the low reference circuit for an open/high resistance.
  3. Connect a test lamp illuminates between the appropriate dimming circuit terminal listed below and ground.
    • Driver Heated and Cool Seat Switch terminal 5
    • Passenger Heated and Cool Seat Switch terminal 3
  4. Ignition ON, command the appropriate Driver or Passenger Door Switch Non-Integrated Backlighting Test ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always OFF, test the dimming control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the door switch.
    • If the test lamp is always ON, test the dimming control circuit for a short to voltage. If the circuit tests normal, replace the door switch.
  5. If all circuits test normal, test or replace the heated and cooled seat switch.
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