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Home >> Buick >> 2018 >> Regal TourX Base >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC U1112-U1115 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify that DTC U1114 is not set.
    • If DTC U1114 is set 

      Replace the E13LA Headlamp Assembly - Left.

    • Go to next step: If DTC U1114 is not set 
  3. Verify that DTC U1115 is not set.
    • If DTC U1115 is set 

      Replace the E13RA Headlamp Assembly - Right.

    • Go to next step: If DTC U1115 is not set 
  4. Verify that DTC U1112 is not set.
    • Go to next step: If DTC U1112 is not set 
  5. Verify that DTC U1113 is not set.
    • Go to next step: If DTC U1113 is not set 
  6. All OK.
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