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Circuit/System Verification

WARNING: This page is about a different car, the 2009 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that no antilock brake system, steering wheel position sensor, traction control or stability control DTCs are set.
    2. IMPORTANT: When programming the VDAAW, use a Tech 2 and Candi module. Using the MDI to program the VDAAW will result in a failure to complete the programming operation.
  2. Program the VDAAW. Refer to Vehicle Direction Alert Alarm Warning Module Programming and Setup .
  3. Observe the scan tool Mode Switch parameter while pressing the lane departure warning switch. The parameter should change between Active and Inactive.
    • If the parameter does not change between the specified values, refer to Lane Departure Warning Switch Circuit Malfunction under Circuit/System Testing .
  4. Observe the mode LED while cycling the lane departure warning switch. The LED should turn ON and OFF when cycling between the commanded states.
    • If the LED does not turn ON and OFF, refer to Lane Departure Warning Switch LED Circuit Malfunction below.
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