We have used CAN SN65HVD230 in our Vehicle Tracking Device board. Testing is done in Lab, using a CAN to USB convertor and a PC. Worked fine. We are facing lot of failures of CAN IC in multiple vehicles which
consist of multiple nodes.
Note: We are using shielded two core cable for CAN but unfortunately we have connected shield with CANL cable in the wiring harness and that shield is not connected to body or ground. Since shield is isolated with
ground it worked fine here but I believe this may be one of the reason for failure. Will that affect CAN IC in anyway like EMI/EMC or differential cable requirement is not met here?
Please review my schematic and suggest any improvement to be done .
Spec: 500kbps speed communication. EV Vehicle.
Common mode choke filter : SRF2012-121YA