On Board Diagnostic (OBD), function
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The telematics system has extensive On Board Diagnostic (OBD) capabilities.
The Telematics/Telephone Control Module has a Diagnostic Trouble Code (DTC) memory. If a malfunction occurs in one of the components or wires which is monitored by the system, a record of the type of malfunction is stored in DTC memory. OBD program functions are performed using VAS 5051 Vehicle Diagnostic Testing and Information System in mode "Guided Fault Finding".