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Home >> Chevrolet >> 2020 >> Camaro SS, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System - Diagnostic Information And Procedures (B3950-C0297) And Symptoms >> 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 turn signal/multifunction switch.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Turn Signal/Multifunction 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 turn signal/multifunction switch.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Turn Signal/Multifunction 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 Circuit/System Testing - 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 Circuit/System Testing - 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 appropriate Low Beam Lamp ON and OFF with a scan tool.
    • If the left low beam headlamp does not turn ON and OFF 

      Refer to Circuit/System Testing - 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 appropriate Low Beam Lamp ON and OFF with a scan tool.
    • If the right low beam headlamp does not turn ON and OFF 

      Refer to Circuit/System Testing - Headlamps Malfunction - Low Beam.

    • Go to next step: If the right low beam headlamp turns ON and OFF 
  8. Low beam headlamps ON, 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 Circuit/System Testing - Headlamps Malfunction - High Beam.

    • Go to next step: If the high beams turn ON and OFF 
  9. All OK.
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