DTC B1005: MICU Lost Communication with Relay Control Module
WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
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 OFF, and then back ON (II).
- Check for DTCs with the HDS.
Is DTC B1005 indicated?
YES -Go to step 4.
NO -Intermittent failure, the relay control module is OK at this time. Check for loose or poor connection at under-hood fuse/relay box connector K (10P), and at under-dash fuse/relay box connector D (17P). If the connections are good, check the battery condition (see BATTERY TEST ) and the charging system.
- Check for DTCs with the HDS.
Is DTC B1158 also indicated?
YES -Go to Relay Control Module Input Test (see RELAY CONTROL MODULE INPUT TEST ).
NO -Check for an open or loose connection in the communication circuit between the MICU and the relay control module. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open.