BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C13C012,...,C13C949; Brake Pressure Control Solenoid "A" Control Circuit Short to Battery; 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000002D0G3
Model Year Start: 2024	Model: GR Corolla	Prod Date Range: [08/2023 - ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C13C012,...,C13C949; Brake Pressure Control Solenoid "A" Control Circuit Short to Battery; 2024 - 2025 MY Corolla Corolla Hatchback GR Corolla [08/2023 - ]

DTC

C13C012

Brake Pressure Control Solenoid "A" Control Circuit Short to Battery

DTC

C13C014

Brake Pressure Control Solenoid "A" Control Circuit Short to Ground or Open

DTC

C13C01C

Brake Pressure Control Solenoid "A" Control Circuit Voltage Out of Range

DTC

C13C01E

Brake Pressure Control Solenoid "A" Control Circuit Resistance Out of Range

DTC

C13C049

Brake Pressure Control Solenoid "A" Control Internal Electronic Failure

DTC

C13C912

Brake Pressure Control Solenoid "B" Control Circuit Short to Battery

DTC

C13C914

Brake Pressure Control Solenoid "B" Control Circuit Short to Ground or Open

DTC

C13C91C

Brake Pressure Control Solenoid "B" Control Circuit Voltage Out of Range

DTC

C13C91E

Brake Pressure Control Solenoid "B" Control Circuit Resistance Out of Range

DTC

C13C949

Brake Pressure Control Solenoid "B" Control Internal Electronic Failure

DESCRIPTION

The ABS solenoid relay and master cylinder cut solenoid valves are built into the brake actuator assembly.

Depending on the operating conditions, the master cylinder cut solenoid valves regulate the brake fluid pressure generated by the pump motor.

When this DTC is stored, the fail-safe function operates and the ABS solenoid relay is turned off to prevent the master cylinder cut solenoid valves from operating.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
C13C012	Brake Pressure Control Solenoid "A" Control Circuit Short to Battery	A short to +B in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C014	Brake Pressure Control Solenoid "A" Control Circuit Short to Ground or Open	An open or short in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C01C	Brake Pressure Control Solenoid "A" Control Circuit Voltage Out of Range	A current leak in the master cylinder cut solenoid circuit is detected during the self test. The master cylinder cut solenoid valve operation request signal and master cylinder cut solenoid valve operation feedback signal do not match for a certain period of time.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C01E	Brake Pressure Control Solenoid "A" Control Circuit Resistance Out of Range	An abnormal resistance in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C049	Brake Pressure Control Solenoid "A" Control Internal Electronic Failure	An internal malfunction in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C912	Brake Pressure Control Solenoid "B" Control Circuit Short to Battery	A short to +B in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C914	Brake Pressure Control Solenoid "B" Control Circuit Short to Ground or Open	An open or short in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C91C	Brake Pressure Control Solenoid "B" Control Circuit Voltage Out of Range	A current leak in the master cylinder cut solenoid circuit is detected during the self test. The master cylinder cut solenoid valve operation request signal and master cylinder cut solenoid valve operation feedback signal do not match for a certain period of time.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C91E	Brake Pressure Control Solenoid "B" Control Circuit Resistance Out of Range	An abnormal resistance in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-
C13C949	Brake Pressure Control Solenoid "B" Control Internal Electronic Failure	An internal malfunction in the master cylinder cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)	Does not come on	-

PROCEDURE

1.	REPLACE BRAKE ACTUATOR ASSEMBLY

(a) Replace the skid control ECU (brake actuator assembly).

Click here

END