Circuit/System Description
WARNING: This page is about a different car, the 2015 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
The Vehicle Direction Warning Switch DTC detects a short to ground in the lane departure warning switch circuit. The lane departure warning feature is enabled and disabled through the lane departure switch located in the instrument panel. When enabled, the frontview camera module will illuminate the indicator located in the switch. When the lane departure switch is pressed the switch provides a path to ground for the signal circuit at the frontview camera module. DTC B356A will set if the circuit is grounded for more than 8 s. This DTC can also be set by holding down the lane departure switch for more than 8 s.