Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000265RW
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System TMMMS Made): C14F112,...,C14FA49; Brake Pressure Control Solenoid "C" Control Circuit Short to Battery; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]

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)

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.

○

-

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.

○

-

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.

DTC Detection Conditions: C14FA14

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

An open in the reservoir cut solenoid circuit is detected during the self test.

○

-

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: C14FA1C

 

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.

○

-

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 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System TMMMS Made): UTILITY

PROCEDURE

1.

REPLACE BRAKE ACTUATOR ASSEMBLY

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

Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

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END