B1000

DTC B1000: Communication Bus Line Error (Bus-off)

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

Is DTCs B1000 and/or B1008 and B1011 indicated?

YES - Go to step 5.

NO - Intermittent failure, the communication bus line is OK at this time. Check for poor connections or shorted wires.

5. Turn the ignition switch OFF.




6. Disconnect the appropriate connector at each control unit in the table.
7. Turn the ignition switch ON (II).
8. Clear the DTCs with the HDS.
9. Turn the ignition switch OFF, and then back ON (II).
10. Wait for 6 seconds or more.
11. Check for DTCs with the HDS.

Is DTCs B1000 and/or B1008, B1011, and B1032 indicated?

YES - Go to step 12.

NO - Faulty MICU; replace the under-dash fuse/relay box.

12. Turn the ignition switch OFF.




13. Check for continuity between the under-dash fuse/relay box connector Q (16P) No. 6 terminal and body ground.

Is there continuity?

YES - Repair a short to ground in the wire between the under-dash fuse/relay box and the affected control unit.

NO - Go to step 14.

14. Turn the ignition switch ON (II).




15. Measure voltage between the under-dash fuse/relay box connector Q (16P) No. 6 terminal and body ground.

Is there voltage?

YES - Repair the short to power in the wire between the under-dash fuse/relay box and the affected control unit.

NO - Go to step 16.

16. Turn the ignition switch OFF.
17. Reconnect the under-dash fuse/relay box connector Q (16P).
18. Reconnect the gauge control module 36P connector.
19. Turn the ignition switch ON (II).
20. Clear the DTCs with the HDS.
21. Turn the ignition switch OFF, and then back ON (II).
22. Wait for 6 seconds or more.
23. Check for DTCs with the HDS.

Is DTC B1000 and/or B1008, B1011, and B1032 indicated?

YES - Replace the gauge control module.

NO - Replace the immobilizer-keyless control unit.