Diagnostic Test

VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding.
1. Turn the ignition on.
2. Using the scan tool, read active DTCs.
  Is this DTC active?
  
  Yes
  - Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the U0196-Lost Communication with Vehicle Entertainment Control Module diagnostic procedure.
  No
  - Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing and perform the Stored Lost Communication DTCs diagnostic procedure.