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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 >> Headlamps Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Headlamps On Switch parameter changes between Active and Inactive while commanding the headlamp ON and OFF with the headlamp switch.
    • If the parameter does not change 

      Refer to Headlamp Switch Malfunction.

    • Go to next step: If the parameter changes 
  3. Verify the scan tool Automatic Headlamps Disable Switch parameter changes between Active and Inactive while commanding the automatic lamp control ON and OFF with the headlamp switch.
    • If the parameter does not change 

      Refer to Headlamp Switch Malfunction.

    • Go to next step: If the parameter changes 
  4. Verify the scan tool Headlamps Flash Switch parameter changes between Active and Inactive while commanding the flash to pass ON and OFF with the turn signal/multifunction switch.
    • If the parameter does not change 

      Refer to Turn Signal/Multifunction Switch Malfunction.

    • Go to next step: If the parameter changes 
  5. Verify the scan tool High Beam Select Switch parameter changes between Active and Inactive while commanding the high beams ON and OFF with the turn signal/multifunction switch.
    • If the parameter does not change 

      Refer to Turn Signal/Multifunction Switch Malfunction.

    • Go to next step: If the parameter changes 
  6. Verify the left low beam headlamp turns ON and OFF when commanding the Left Headlamp Low Beam ON and OFF with a scan tool.
    • If the left low beam headlamp does not turn ON and OFF 

      Refer to Headlamps Malfunction - Low Beam.

    • Go to next step: If the left low beam headlamp turns ON and OFF 
  7. Verify the right low beam headlamp turns ON and OFF when commanding the Right Headlamp Low Beam ON and OFF with a scan tool.
    • If the right low beam headlamp does not turn ON and OFF 

      Refer to Headlamps Malfunction - Low Beam.

    • Go to next step: If the right low beam headlamp turns ON and OFF 
  8. Verify the high beams turn ON and OFF when commanding the High Beams ON and OFF with a scan tool.
    • If the high beams do not turn ON and OFF 

      Refer to Headlamps Malfunction - High Beam.

    • Go to next step: If the high beams turn ON and OFF 
  9. Verify the high beam indicator on the instrument cluster turns ON and OFF while commanding the All Indicators Test ON and OFF with a scan tool.
    • If the high beam indicator does not turn ON and OFF 

      Refer to High Beam Indicator Malfunction.

    • Go to next step: If the high beam indicator turns ON and OFF 
  10. (TQ5 only), verify the automatic high beam control indicator on the instrument cluster turns ON and OFF while commanding the automatic high beam control ON and OFF with the automatic high beam control switch located on the Turn Signal/Multifunction switch.
    • If the automatic high beam control indicator does not turn ON and OFF. 

      Refer to Automatic High Beam Select Switch Malfunction.

    • Go to next step: If the automatic high beam control indicator turns ON and OFF. 
    11. 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.
  11. 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 
  12. All OK.
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