[4] No or incorrect CAN message from control unit N49 (Steering angle sensor): Capacity exceeded

[4] No or incorrect CAN message from control unit N49 (Steering angle sensor): Capacity exceeded

Test 1: Possible cause and remedy

1. Possible cause and remedy
If several fault codes regarding CAN communication have occurred, the following causes of the fault are likely

- Open circuit in voltage supply to the control modules involved
- Short circuit or open circuit of CAN wires
- Connector sleeves of the CAN bus
If CAN communication between control module CDI 3 and at least one other control module is fault-free, there is no fault at the CAN element of the control module CDI 3.In this case proceed as follows:

- Read fault memory of control module to which there is a fault in the communication.If a CAN fault regarding communication with control module CDI 3 is present in this control module, then first of all test CAN lines between the two control modules.
End of test

Read out fault memory of control unit N49 (Steering angle sensor).End of test