DTC B2402: STL unit comm.(system ID), B2403: STL unit comm.(CRC), B2404: STL unit comm.(function code), B2405: STL unit comm.(rolling code), B2406: STL unit comm. (PTC operate), B2407: STL unit comm.(EEPROM), B2408: STL unit comm.(solenoid): Notes

CAUTION:

If the DTC B2402, B2403, B2404, B2405, B2406, B2407, or B2408 is set, diagnose the CAN bus lines.
Whenever the steering lock unit is replaced, ensure that the communication circuit is normal.

Fig 1: Key Reminder Switch And KOS-ECU Circuit Diagram
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.