BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C14F112,...,C14FA49; Brake Pressure Control Solenoid "C" Control Circuit Short to Battery; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM1000000028D85
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [11/2022 - 08/2023]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C14F112,...,C14FA49; Brake Pressure Control Solenoid "C" Control Circuit Short to Battery; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]

DTC

C14F112

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

DTC

C14F114

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

DTC

C14F11C

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

DTC

C14F11E

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

DTC

C14F149

Brake Pressure Control Solenoid "C" Control Internal Electronic Failure

DTC

C14FA12

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

DTC

C14FA14

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

DTC

C14FA1C

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

DTC

C14FA1E

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

DTC

C14FA49

Brake Pressure Control Solenoid "D" Control Internal Electronic Failure

DESCRIPTION

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

When the brakes are operating, the reservoir cut solenoid valves supply brake fluid from the brake master cylinder reservoir assembly to the pump motor as necessary.

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

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C14F112	Brake Pressure Control Solenoid "C" Control Circuit Short to Battery	A short to +B in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)
C14F114	Brake Pressure Control Solenoid "C" Control Circuit Short to Ground or Open	An open or short in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)
C14F11C	Brake Pressure Control Solenoid "C" Control Circuit Voltage Out of Range	A current leak in the reservoir cut solenoid circuit is detected during the self test. The reservoir cut solenoid valve operation request signal and reservoir cut solenoid valve operation feedback signal do not match for a certain period of time.	Skid control ECU (brake actuator assembly)
C14F11E	Brake Pressure Control Solenoid "C" Control Circuit Resistance Out of Range	An abnormal resistance in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)
C14F149	Brake Pressure Control Solenoid "C" Control Internal Electronic Failure	An internal malfunction in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)
C14FA12	Brake Pressure Control Solenoid "D" Control Circuit Short to Battery	A short to +B in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)
C14FA14	Brake Pressure Control Solenoid "D" Control Circuit Short to Ground or Open	An open or short in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)
C14FA1C	Brake Pressure Control Solenoid "D" Control Circuit Voltage Out of Range	A current leak in the reservoir cut solenoid circuit is detected during the self test. The reservoir cut solenoid valve operation request signal and reservoir cut solenoid valve operation feedback signal do not match for a certain period of time.	Skid control ECU (brake actuator assembly)
C14FA1E	Brake Pressure Control Solenoid "D" Control Circuit Resistance Out of Range	An abnormal resistance in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)
C14FA49	Brake Pressure Control Solenoid "D" Control Internal Electronic Failure	An internal malfunction in the reservoir cut solenoid circuit is detected during the self test.	Skid control ECU (brake actuator assembly)

PROCEDURE

1.	REPLACE BRAKE ACTUATOR ASSEMBLY

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

Click here

END