TCO node: timeout in CAN communication
• Check the TCO for DTCs (NOTE: COO unit can be TCO node in some vehicle configurations). • If DTCs cannot be read from the TCO: - check power supply and ignition signal to the TCO - check CAN connection to TCO unit • Check wiring and connectors for the yellow CAN-bus
What you'll see
No driver-visible symptom recorded.
System reaction
• Functions dependent on information from TCO are degraded (examples listed below): - The vehicle speed display in the ICL will be absent - The vehicle distance display in the ICL will be absent - Cruise control is disabled - Adaptive Cruise control is disabled - Downhill speed control is disabled • Amber warning lamp "TCO missing" is shown in ICL
Diagnostic depth
Communication error. Communication with the Tachograph System (TCO) interrupted.
• Power supply to TCO has failed • TCO unit disconnected from the yellow CAN bus • Faulty TCO unit