Honda HR-V Owners & Service Manuals

Honda HR-V: DTC B1002 MICU Internal Error (EEPROM Error)

Multiplex Integrated Control Unit (Micu) - Diagnostics

DTC (MICU)

NOTE : If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks.

1. Problem verification:

  1. The DTCs with the HDS.

Clear DTCs

  1. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
  2. Wait for at least 6 seconds.
  3. Check for DTCs with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Is DTC B1002 indicated?

YES

Faulty MICU; replace the under-dash fuse/relay box.

NO

Intermittent failure, the MICU is OK at this time.

DTC B1003: MICU UPDATE ERROR

Multiplex Integrated Control Unit (Micu) - Diagnostics

DTC (MICU)

NOTE :

  • If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks.
  • This DTC is indicated when a MICU update is not completed properly.
  • Before update the MICU, make sure the 12 volt battery in the vehicle is fully charged, and connect a jumper 12 volt battery (not a battery charger) to maintain system voltage.
  • Never turn the vehicle to the ACCESSORY mode or OFF (LOCK) mode, during the reprogramming. If there is a problem with the reprogramming, turn the vehicle to the ON mode.

1. Problem verification:

  1. Clear the DTCs with the HDS.

Clear DTCs

  1. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
  2. Check for DTCs with the HDS.

Multiplex Integrated Control Unit (Micu) - Diagnostics

Is DTC B1003 indicated?

YES

Update the MICU.

NO

Intermittent failure, the system is OK at this time.

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