Diagnostic Item 28: Diagnose when the scan tool (M.U.T.-IIISE) cannot receive the data sent by A/C controller assembly: Function

The diagnostic result demonstrates that "the scan tool (M.U.T.-IIISE) cannot receive the sent data from the A/C controller assembly" when the scan tool (M.U.T.-IIISE) checks the periodically sent data from each ECU and cannot receive the A/C controller assembly data only.