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Home >> Buick >> 2012 >> Regal Turbo, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System >> Diagnostic Information and Procedures >> Front Fog Lamps Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, observe the scan tool Front Fog Lamps Switch parameter while turning the front fog lamps switch ON and OFF. The parameter should change between Active and Inactive.
    • If the parameter does not change between the commanded states, refer to Front Fog Lamp Switch Malfunction in Circuit/System Testing .
  2. Ignition ON, turn the front fog lamps ON and OFF using the front fog lamps switch. The front fog lamps should turn ON and OFF when changing between the commanded states.
    • If the front fog lamps do not turn ON and OFF, refer to Front Fog Lamp Malfunction in Circuit/System Testing .
  3. Command the All Indicators ON and OFF with a scan tool. The front fog lamps indicator should turn ON and OFF when changing between the commanded states.
    • If the front fog lamps indicator illuminates during the test, replace the K9 BCM.
    • If the front fog lamps indicator does not illuminate during the test or remains illuminated at all times, replace the P16 instrument cluster.
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