DTC B12F3 (Keyless Access Power Control Unit): Notes

DTC B12F3  : BCM lost communication with transmission control unit

How to use this manual .

NOTICE:  

Before you troubleshoot, review the How to Troubleshoot .

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 () or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not Communicating () or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS) () .