DTC B1007: MICU Lost Communication with Combination Switch Control Unit (Headlight Switch Message)
WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, 2006 Acura TSX, 2005 Acura TSX, and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If you are troubleshooting multiple DTC's, 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 using the HDS.
- Cycle the ignition switch to OFF, and then back ON.
- Check for DTCs using the HDS.
Is DTC B1007 indicated?
YES -Go to step 4.
NO -Intermittent failure, the MICU is OK at this time. Check for loose or poor connections. If the connections are good, check the battery condition (see BATTERY TEST ) and the charging system (see CHARGING SYSTEM INDICATOR CIRCUIT TROUBLESHOOTING ).
- Check for DTCs of the gauge control module and relay control module using the HDS.
Are DTCs B1155 and B1062 also indicated?
YES -Go to the COMBINATION SWITCH CONTROL UNIT INPUT TEST .
NO -Check for an open, or a short to power or ground in the communication circuit between the MICU and the combination switch control unit. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open, or short to power or ground.