B1002

DTC Troubleshooting: B1001, B1002

DTC B1001:

MICU Internal Error (CPU Error)

DTC B1002:

MICU 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 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. Operate the door lock (LOCK/UNLOCK).

4. Check for DTCs with the HDS.

Are DTCs B1001 and/or B1002 indicated?

YES -

Faulty MICU; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal And Installation.�

NO -

Intermittent failure, the MICU is OK at this time. Do the MICU input test MICU Input Test.�