DTC Troubleshooting: B1601 (Keyless Access Control Unit): Notes

DTC B1601  : Keyless access control unit internal (CPU) error

How to use this service information .

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 1 and Test Mode 2 (without the HDS) 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 A - Initial Communication and DTC Checks .