DTC B1244: Light Sensor Circuit Malfunction [10/2014 - 09/2017]: Description

The automatic light control sensor detects ambient light, converts it into an electrical signal and outputs it to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) turns the headlights and taillights on or off according to the signal.

The main body ECU (multiplex network body ECU) outputs DTC B1244.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1244	Light Sensor Circuit Malfunction	Malfunction in the automatic light control sensor. Open or short in the automatic light control sensor circuit.	Automatic light control sensor Main body ECU (multiplex network body ECU) Harness or connector