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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 >> Daytime Running Lamps Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the left daytime running lamp turns ON and OFF while commanding the Left Front Park Lamp/Daytime Running Lamp ON and OFF with a scan tool.
    • If the left daytime running lamp does not turn ON and OFF 

      Refer to Daytime Running Lamps Malfunction.

    • Go to next step: If the left daytime running lamp turns ON and OFF 
  3. Verify the right daytime running lamp turns ON and OFF while commanding the Right Front Park Lamp/Daytime Running Lamp ON and OFF with a scan tool.
    • If the right daytime running lamp does not turn ON and OFF 

      Refer to Daytime Running Lamps Malfunction.

    • Go to next step: If the right daytime running lamp turns ON and OFF 
    4. NOTE:
    • Vehicles equipped with RPO CE1 use the B200 Rain Sensor Module for ambient light status. Vehicles without RPO CE1 use the B10B Ambient Light/Sunload Sensor for ambient light status.
    • Placing a towel over the ambient light sensor can simulate a dim light condition and shining an incandescent light at the ambient light sensor can simulate a bright light condition.
  4. Verify the scan tool Ambient Light Status parameter changes while switching from dim to bright ambient light conditions
    • If the parameter does not change and the vehicle is equipped with RPO CE1 

      Refer to Rain Sensing Module Malfunction.

    • If the parameter does not change and the vehicle is not equipped with RPO CE1 

      Refer to Ambient Light Sensor Malfunction.

    • Go to next step: If the parameter changes and the automatic headlamps turn ON and OFF 
  5. All OK.
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