Applies to: CMS1 (CMS)
What does Scania CMS fault code 770 mean?
The voltage on control unit pin B7 is too low.
What causes Scania DTC 770?
Fault in the cable harness or in the 3-position switch in the switch module in the engine compartment.
What are the symptoms?
The engine cannot be started.
How to fix Scania CMS fault code 770?
- Check: - 3-position switch for engine start in the engine compartment.
- Connections and cable harness between the 3-position switch and the CMS control unit.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.
Code 770 in other Scania systems
- 770hex 0302 Control unit
- 770hex 0302 Communication with the engine management system (EMS)
- 770hex 0302 Air suspension remote control 2
- 770hex 0302 Electric door motor, front door, short circuit outputs
- 770hex 000302 BMS control system, no CAN communication
- 770hex 0302 Misfiring in cylinder 2
- 770hex 0302 Communication with the brake management system (BMS)
- 770hex 0302 Communication with the CUV control unit
- 770hex 0302 Sensor for front right-hand side cover, open circuit
- 770hex 000302 CAN message missing
- 770hex 0302 GPS antenna overloaded
- 770hex 0302 GPS antenna overloaded
- 770hex 0302 TCC control unit, temperature too high
- 770hex 0302 Rejected key update request