B1001

Factory Manual References

Factory service manual diagnostic procedure for 2011 acura rl

A L L Diagnostic Trouble Codes ( DTC )

B1001




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. 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 Drivers Under-Dash Fuse/Relay Box (MICU) Removal/Installation.�

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections. If all connections are good, check battery condition Testing and Inspection and the charging system.�

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. 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 Drivers Under-Dash Fuse/Relay Box (MICU) Removal/Installation.�

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections. If all connections are good, check battery condition Testing and Inspection and the charging system.�

Supporting Diagrams & Locations

Reference material from the factory manual for this diagnostic procedure.

Diagram

A/C Leak Detection (B07-025)

Location

Accessory Power Sockets

Location

ACURALINK

Location

Adaptive Cruise Control (Acc)

Location

Audio System

Fuse/Relay

Dashboard

Fuse/Relay

Door

Fuse/Relay

B18-020: Warranty Extension: Customer Support Program For Driver's Airbag Inflator For 2013-14 ILX Hybrid And Other Listed Years And Models (Expires February 28, 2026) (B18-020)

Fuse/Relay

2011 RL: TQI Information (10-050)

Related Procedures

Procedure

A/C Refrigerant (Compressor) Oil Guide (BJA34004)

Procedure

A/C Refrigerant And Oil Type Guide (BJA1330)

Procedure

A/C Refrigerant Type Guide (BJA11220)

Procedure

A/C Refrigerant Types Guide (BJA09917 VERSION 2)

Procedure

Always Enter Campaign Number On Proof Of Correction Certificate (B13010B)

Procedure

ACURA Recommended Materials (B99-015)

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