DTC U1C08: Invalid Authentication Data Received From VDC PU-Bus

DTC detecting condition:

When MAC error of VDC Control Module is detected.

Trouble symptom:

All functions of EyeSight system do not operate.
High beam assist does not operate.

NOTE:

Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE