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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Lighting Systems) >> Diagnostic Information and Procedures >> Park, License, and/or Tail Lamps Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, observe the scan tool Park Lamp Switch parameter while cycling the headlamp switch between the PARK and OFF positions. The parameter should change between On and Off.
    • If the parameter does not change between the specified values, refer to Park Lamp Switch Circuit Malfunction in Circuit/System Testing .
  2. Command the Parking Lamps ON and OFF with a scan tool. The park and license lamps should turn ON and OFF when changing between the commanded states.
    • If all the lamps are inoperative, refer to Park Lamp Relay Circuit Malfunction in Circuit/System Testing .
    • If one or more of the front park lamps are inoperative, refer to Front Park Lamp Circuit Malfunction in Circuit/System Testing .
    • If one or more of the rear park lamps are inoperative, refer to Rear Park Lamp Circuit Malfunction in Circuit/System Testing .
    • If one or more of the license lamps are inoperative, refer to License Lamp Circuit Malfunction in Circuit/System Testing .
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