July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC B1602: Notes

DTC B1602 : Keyless Access Control Unit (Body Control Module) Internal (EEPROM) Error

How To Use This Service Information .

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 .
Before you troubleshoot, review the How to Troubleshoot - Refer to: How to Troubleshoot the Body Electrical (2019 2020 2021) or How to Troubleshoot the Body Electrical (2022 2023) .