Absence of CAN2 subnet CAN bus (buffer overflow). CAN2 is BMU Sub-bus except for Battery slave units (BSU:s) where CAN2 is BSU Sub-bus.
â–¶ How to fix
Check harness
What you'll see
No driver-visible symptom recorded.
System reaction
* For HRU2 both DCC and waterpumps are connected to BMU_Subnet * 24 will stop charging * Lack of Cooling performance will lead to reduced electrical performance
Diagnostic depth
Detection
Missing CAN nodes on CAN2 Subnet
Possible cause
* Power supply to components on BMU Subnet * Cable harness to components faulty