B1800

DTC B1800: 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.

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

Is DTC B1800 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections at power seat control unit connector B (40P) and at driver's under-dash fuse/relay box connector G (6P).

5. Check for DTCs with the HDS.

Is DTC B1000 also indicated?

YES Troubleshoot DTC B1000.

5GNO - If only B1800 is indicated, replace the power seat control unit.