Using the B-CAN System Diagnosis Test Mode 1 (Use only if the HDS is unavailable)

Check for communication circuit problems using B-CAN System Diagnostic Test Mode 1 (see TEST MODE 1 ).
Check for DTCs.
If there are DTCs stored, sort them, and then troubleshoot the DTCs in this order.
1. Battery voltage DTCs
2. Internal error DTCs
3. Loss of communication DTCs
  NOTE: If DTC B1000 is stored, troubleshoot DTC B1000 first (see DTC B1000: COMMUNICATION CIRCUIT ERROR (BUS-OFF) ).
4. Signal error DTCs
If no DTCs are retrieved, use B-CAN System Diagnostic Test Mode 2 to check all inputs related to the failure (see TEST MODE 2 ).