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Home >> Saab >> 2011 >> 9-5 Turbo6 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting And Signaling Systems >> Fault diagnosis, symptoms >> Interior Backlighting Malfunction >> Circuit/System Testing >> Interior Backlighting Circuit Test

Interior Backlighting Circuit Test

  1. Ignition OFF, interior light switched OFF, disconnect the harness connector at the appropriate inoperative backlighting component.
  2. Test for less than 5.0 Ω between the ground circuit terminal black wire and ground.
  3. If greater than the specified range, test the ground circuit for an open/high resistance.
  4. Connect a test lamp between the control circuit terminal yellow wire and ground.
  5. Ignition ON, command the LED Backlight Dimming test ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
  6. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
  7. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module.
  8. If all circuits test normal, test or replace the appropriate component with the inoperative backlighting.
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