DTC B1143: Door Multiplex Control Unit Internal Error (EEPROM error)
NOTE:
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see
TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
- Clear the DTCs with the HDS.
- Disconnect the door multiplex control unit connectors and wait for 2 seconds.
- Reconnect the connectors to the door multiplex control unit.
- Turn the ignition switch OFF, and then back ON (II).
- Check for DTCs with the HDS.
Is DTC B1143 indicated?
YES -Check connections. If OK, replace the door multiplex control unit.
NO -The system is OK at this time. Check the battery and charging system.