Diagnostic Test

CHECK THE TIRE SIZE 

1. This is an informational Diagnostic Trouble Code (DTC). The Adaptive Cruise Control (ACC) Module receives the vehicle configuration information over the Can Bus. Tire size is stored in the Body Control Module (BCM) and also in the Anti-lock Brake System (ABS) Module.

   Possible causes but not limited too: 

   • Wrong tires installed on vehicle.
   • Incorrect tire size written/stored in the BCM and/or ABS.
   • ABS DTCs present.
   • Any Service Bulletins that may apply.

   Were any of the above conditions present?

   Yes 

   • Repair/reprogram as necessary.
   • Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   • With the scan tool, perform an ACC Aim Mode - Auto Alignment procedure to relearn a different tire size and to verify the Adaptive Cruise Control (ACC) Module alignment.
   • Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Refer to STANDARD PROCEDURE .