DTC B1901, B1902: Immobilizer Unit Internal Error (CPU Error); Immobilizer Unit Internal Error (EEPROM Error)
NOTE:
If your are troubleshooting multiple DTC's 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.
- Turn the ignition switch to LOCK (0) and then back to ON (II).
- Wait for 6 seconds or more.
- Check for DTCs with the HDS.
Are DTC B1901 and/or B1902 indicated?
YES - Faulty immobilizer-keyless control unit, replace the immobilizer-keyless control unit (see IMMOBILIZER-KEYLESS CONTROL UNIT REPLACEMENT ). ■
NO - Intermittent failure, the system is OK at this time. ■