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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting System - Diagnostic Information And Procedures >> Diagnostic Information And Procedures >> Interior Backlighting Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool LED Backlight Dimming Command parameter changes between a high percentage to a low percentage while operating the dimmer switch from high to low.
    • If the parameter does not change 

      Refer to Dimmer Switch Malfunction.

    • Go to next step: If the parameter changes 
  3. Verify the switch indictor amber LED's for the components listed below turn ON and OFF while turning the associated switches ON and OFF.
    • A98 Front Overhead Console Assembly
    • S48E Multifunction Switch - Center Console
    • S126 Drive Mode Select Switch (All Wheel Drive Switch)
    • S126 Drive Mode Select Switch (Lane Departure Warning Switch)
    • S107 Parking Assist On/Off Switch
    • S13D Door Lock Switch - Driver
    • S13P Door Lock Switch - Passenger
    • If any of the switch indicator amber LED's do not turn ON and OFF 

      Refer to Switch Indicator LED Backlighting Malfunction.

    • Go to next step: If all switch indicator amber LED's turn ON and OFF 
  4. Verify the backlighting components turn ON and OFF while commanding the LED Backlight Dimming ON and OFF with a scan tool.
    • If the backlighting components do not turn ON and OFF 

      Refer to Interior Backlighting Malfunction.

    • Go to next step: If the backlighting components turn ON and OFF 
  5. All OK.
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