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Home >> Acura >> 2009 >> RL >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Multiplex Integrated Control System >> DTC Troubleshooting >> DTC B1001: MICU Internal (CPU) Error; DTC B1002: MICU Internal (EEPROM) Error
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DTC B1001: MICU Internal (CPU) Error; DTC B1002: MICU Internal (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 ).
  1. Clear the DTCs with the HDS.
  2. Turn the ignition switch to LOCK (0) and then back to ON (II).
  3. Wait for at least 6 seconds.
  4. Check for DTCs with the HDS.

    Is DTC B1001 and/or B1002 indicated? 

    YES  -Faulty MICU, replace the driver's under-dash fuse/relay box.

    NO  -Intermittent failure, the system is OK at this time.