DTC B1200: Communication Bus Line Error (Bus off)
NOTE:
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN SYSTEM DIAGNOSIS TEST MODE A
.
- Clear the DTCs with the HDS.
- Turn the ignition switch OFF, and then back ON (II).
- Wait for 6 seconds or more.
- Check for DTCs with the HDS.
Are DTC B1000, B1008, B1011, B1032, and or B1900 also indicated with DTC B1200?
YES -Troubleshoot DTC B1000.
NO -If only DTC B1900 is present, replace the immobilizer-keyless control unit. If no DTCs are present, it's an intermittent failure, the system is OK at this time. Check for loose or poor connections at the climate control unit 32P connector, and at the under-dash fuse/relay box connector Q (16P).