DTC B1901: Immobilizer Unit Internal Error (CPU Error); DTC B1902: Immobilizer 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.
- Turn the ignition switch to LOCK (0) and then back to ON (II).
- Wait for at least 6 seconds.
- Check for DTCs with the HDS.
Is DTC B1901 or B1902 indicated?
YES -Replace the immobilizer-keyless control unit (see PROGRAMMING IMMOBILIZER-KEYLESS CONTROL UNIT ).
NO -Intermittent failure, the system is OK at this time.