The radar sensor (Left) communicates with other control units via the Chassis CAN communication circuit. Also, the control unit connected to another CAN communication circuit communicates with the scan tool via the central gateway control unit.
The following conditions cause poor CAN communication.
- Open circuit in the CAN communication circuit
- Short together between the CAN Low circuit and the CAN High circuit
- Short to ground or short to the power supply circuit in the CAN communication circuit
- Failure inside the control unit, which causes a short to ground or a short to the power supply circuit in the CAN communication circuit