BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C14F112,...,C14F149; Brake Pressure Control Solenoid "C" Control Circuit Short to Battery; 2019 MY Corolla Corolla Hatchback GR Corolla [06/2018

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000001D2L1
Model Year Start: 2019	Model: GR Corolla	Prod Date Range: [06/2018 - 01/2019]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C14F112,...,C14F149; Brake Pressure Control Solenoid "C" Control Circuit Short to Battery; 2019 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 01/2019]

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

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)

DTC Detection Conditions: C14F114

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	-	-	-
Malfunction Status	An open in the reservoir cut solenoid circuit is detected during the self test.	○	-
Malfunction Status	A short in the reservoir cut solenoid circuit is detected during the self test.	-	○
Detection Time		-	-
Number of Trips		1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C14F11C

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	-	-	-
Malfunction Status	A current leak in the reservoir cut solenoid circuit is detected during the self test.	○	-
Malfunction Status	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.	-	○
Detection Time		-	-
Number of Trips		1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.

Click here

PROCEDURE

1.	REPLACE BRAKE ACTUATOR ASSEMBLY

(a) Replace the brake actuator assembly.

Click here

END