| DTC B1000: | Communication Bus Line Error |
| 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 DTC B1000 indicated? YES - Go to 5. NO - Intermittent failure. The communication bus line is OK at this time. Check for loose or poor connections, or worn/shorted wires. If the connections are good, check the battery condition and the charging system.n |
| 5. | Check for DTCs with the HDS. Are DTCs B1000, B1008, B1011, and B1032 all indicated? YES - Go to 6. NO - Go to the indicated DTC troubleshooting.n |
| 6. | Turn the ignition switch OFF. |
| 7. | Disconnect the appropriate connector at each control unit in the table.
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| 8. | Turn the ignition switch ON (II). |
| 9. | Clear the DTCs with the HDS. |
| 10. | Turn the ignition switch OFF, and then back ON (II). |
| 11. | Wait for 6 seconds or more. |
| 12. | Check for DTCs with the HDS. Are DTCs B1000, B1008, B1011, and B1032 all indicated? YES - Replace the MICU.n NO - Go to 13. |
| 13. | Turn the ignition switch OFF. |
| 14. | Check for continuity between the under-dash fuse/relay box connector Q (16P) No. 6 terminal and body ground. Is there continuity? YES - Repair the short to ground in the wire.n NO - Go to 15. |
| 15. | Turn the ignition switch ON (II). |
| 16. | Check for 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 connector and the affected control unit.n NO - Go to 17. |
| 17. | Turn the ignition switch OFF. |
| 18. | Reconnect the under-dash fuse/relay box connector Q (16P) and the gauge control module (tach) 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. Are DTCs B1000, B1008, B1011, and B1032 all indicated? YES - Replace the gauge control module (tach).n NO - Go to 23. |
| 23. | Turn the ignition switch OFF. |
| 24. | Reconnect the immobilizer-keyless control unit 7P connector. |
| 25. | Turn the ignition switch ON (II). |
| 26. | Clear the DTCs with the HDS. |
| 27. | Turn the ignition switch OFF, and then back ON (II). |
| 28. | Wait for 6 seconds or more. Are DTCs B1000, B1008, B1011, and B1032 all indicated? YES - Replace the immobilizer-keyless control unit.n NO - Replace the climate control unit.n |