Circuit/System Verification

WARNING: This page is about a different car, the 2014 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to Diagnostic Aids before performing Circuit/System Verification.

Ignition ON.
Verify that DTC B356A is not set.
- If the DTC is set
  Refer to DTC B356A .
- If the DTC is not set
Verify that DTC B0987 is not set.
- If the DTC is set
  Refer to DTC B0987 .
- If the DTC is not set
Verify the lane departure warning switch indicator turns ON and OFF when commanding the Lane Departure Warning Indicator On and Off with a scan tool.
- If the indicator does not turn ON and OFF
  Refer to Circuit/System Testing - Lane Departure Warning Switch Indicator Malfunction.
- If the indicator turns ON and OFF
Verify the scan tool Lane Departure Warning Switch Status parameter changes between Open and Closed when pressing and releasing the lane departure warning switch
- If the parameter does not change between Active and Inactive
  Refer to Circuit/System Testing - Lane Departure Warning Switch Malfunction.
- If the parameter changes between Active and Inactive
Verify the green lane departure warning indicator and the amber lane departure warning indicator illuminate on the P43 Collision Alert Indicators when commanding the Instrument Cluster All Indicators On and Off with a scan tool.
- If either indicator does not illuminate
  Refer to Circuit/System Testing - Lane Departure Warning Indicator Malfunction
- If both indicators illuminate
All OK.