| DTC B1900: | 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. Are DTCs B1000, B1008, B1011, B1032 and B1900 all indicated? YES - Troubleshoot DTC B1000.n NO - If only DTC B1900 is indicated, replace the immobilizer-keyless control unit. If DTCs are not indicated, it's an intermittent failure, the system is OK at this time. Check for loose or poor connections at the immobilizer-keyless control unit 7P connector, and at the under-dash fuse/relay box connector Q (16P).n |