DTC C1249: Open in Stop Light Switch Circuit [06/2017 - 10/2020]: Description

The skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied. DTCs may be stored if either of the following occurs:

Stop light switch assembly stuck on malfunction.
The accelerator and brake pedals are depressed simultaneously.*

HINT:

*: The skid control ECU (brake actuator assembly) may store this DTC upon judging that a stuck on malfunction has occurred when the accelerator pedal and brake pedal are depressed simultaneously. However, this does not indicate a malfunction.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1249	Open in Stop Light Switch Circuit	The vehicle speed is 10 km/h (6 mph) or more, the accelerator pedal is depressed, the master cylinder pressure is 0.5 MPa (5.09 kgf/cm² , 72 psi) or less, and the stop light switch assembly is on for 60 seconds or more.	Wire harness or connector Stop light switch assembly Skid control ECU (brake actuator assembly)