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DTC › COO9 COO9 / 0251

BMS node: timeout in CAN communication.

â–¶ How to fix

• Check the BMS for DTCs • If DTCs can not be read from the BMS: - check CAN connection to BMS unit - check power supply and ignition signal to the BMS • Check wiring and connectors for the red CAN-bus • Measure the resistance (with the battery disconnected) between pins B1 and B10. It should be approximately 60 ohm (one 120 ohm termination resistor in each end of the CAN-bus).

What you'll see

• Instrument cluster will display warning(s). • Functions dependent on information from BMS are degraded (examples listed below): - Cruise Control is inhibited - some engine speed control modes ("PTO-modes") are inhibited - instrument cluster display of lining wear (brake pad wear).

System reaction

Amber Cruise Control malfunc.

Diagnostic depth

Detection

Communication error. Communication with the Brake Management System (BMS) interrupted.

Possible cause

• Faulty BMS unit • BMS unit disconnected from the red CAN bus

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