DTC B27A7: Open in Inside Luggage Compartment Electrical Key Oscillator Circuit: Description

The certification ECU (smart key ECU assembly) generates a request signal and sends it to the No. 3 indoor electrical key antenna assembly (for rear floor). To detect the key inside the cabin, the No. 3 indoor electrical key antenna assembly (for rear floor) creates a detection area in the cabin.

DTC B27A7 is detected by the certification ECU (smart key ECU assembly) when an open circuit occurs between the certification ECU (smart key ECU assembly) and No. 3 indoor electrical key antenna assembly (for rear floor) terminals (between CLG7 and ANTE7, or CG7B and CLGB).