Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Ignition - On / Vehicle - In Service Mode
Verify DTC B356A is not set.
- If the DTC is set
  Refer to: DTC B356A
- Go to next step: If the DTC is not set
Verify DTC B0987 is not set.
- If the DTC is set
  Refer to: DTC B0987 (UGN) , or DTC B0987 (-UGN)
- Go to next step: If the DTC is not set
Perform the appropriate scan tool control function: Lane Departure Warning Indicator Command - Cycle On and Off
- If the component does not turn On and Off
  Refer to: DTC B0987 (UGN) , or DTC B0987 (-UGN)
- Go to next step: If the component turns On and Off
Operate the component: Lane Departure Warning Switch - Cycle On and Off
Verify the scan tool parameter: Lane Departure Warning Switch Status = Active/Inactive - The value should change when selecting the different switch positions.
- If not the specified values
  Refer to: DTC B356A
- Go to next step: If the specified values
Verify there are no other K20 Engine Control Module or communication DTCs set.
- If a DTC is set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If a DTC is not set
Verify the area of the K109 Frontview Camera Module is not contaminated.
- If contaminated
  Clean the windshield.
- Go to next step: If not contaminated
All OK.