July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Test

ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan tool, select view DTCs.
  Is the DTC Active at this time?
  
  Yes
  - Refer to U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE and perform the diagnostic procedure.
  No
  - Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.