Applies to: TCC3 (TCC)
What does Scania TCC fault code 771 mean?
The current to the outputs of the TCC control unit is too high.
What causes Scania DTC 771?
- Connected components have higher electric power consumption than calculated due to faults. - Unauthorised component connected to the TCC control unit. - Internal fault in the control unit.
What are the symptoms?
- Limited function or complete loss of certain functions. - Blown fuse or fuses.
How to fix Scania TCC fault code 771?
- Check connected components, their cable harness and harness-to-harness connector.
- Check that no components except those included in the system from delivery have been connected.
- If there are no non-conformities in the cable harness and the fault code recurs, it may be due to an internal fault in the TCC control unit.
- Contact Technical Support.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.
Code 771 in other Scania systems
- 771hex 0303 Communication with the brake management system (BMS)
- 771hex 0303 Engine start switch signal
- 771hex 0303 Air suspension remote control 2
- 771hex 0303 Door motor brake front door leadf, open circuit output
- 771hex 000303 Coordinator, no CAN communication
- 771hex 0303 Misfiring in cylinder 3
- 771hex 0303 Communication with the coordinator (COO)
- 771hex 0303 Communication with the engine control unit (EMS).
- 771hex 0303 Sensor for battery hatch, open circuit
- 771hex 000303 CAN message missing
- 771hex 0303 Control box 1