B2143

DTC Troubleshooting: B2142, B2143, B2144

DTC B2142: Adaptive Front Lighting Control Unit Sub CPU Communication Error

DTC B2143: Adaptive Front Lighting Control Unit Sub CPU Memory Error

DTC B2144: Adaptive Front Lighting Control Unit Sub CPU EEPROM Error

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. Troubleshooting - B-CAN System Diagnosis Test Mode A

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Check for DTCs with the HDS.

Are DTCs B2142, B2143, and/or B2144 indicated?
YES - Replace the adaptive front lighting control unit, and do the adaptive front lighting control unit learning procedure. When the adaptive front lighting control unit is replaced (a brand new adaptive front lighting control unit is installed)

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.