DTC B1243-00: Impact Detection Sensor Circuit Malfunction [11/2023 - ]: Description

If the collision door lock release function does not operate normally, or an open or short in the GSW input circuit of the main body ECU (multiplex network body ECU) is detected, DTC B1243-00 will be stored.

HINT:

If DTC B1243-00 is stored, the automatic door lock function, and collision door lock release function will be prohibited.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B1243-00	Impact Detection Sensor Circuit Malfunction	A malfunction occurs in the GSW input circuit of the main body ECU (multiplex network body ECU).	Main body ECU (multiplex network body ECU) Power distribution box assembly Airbag ECU assembly Wire harness or connector	Main Body	A