Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001D2KP
Model Year Start: 2019 Model: GR Corolla Prod Date Range: [06/2018 - 09/2022]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C12BB12,...,C12C649; Right Front Wheel ABS Hold Solenoid Control Circuit Short to Battery; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]

DTC

C12BB12

Right Front Wheel ABS Hold Solenoid Control Circuit Short to Battery

DTC

C12BB14

Right Front Wheel ABS Hold Solenoid Control Circuit Short to Ground or Open

DTC

C12BB1C

Right Front Wheel ABS Hold Solenoid Control Circuit Voltage Out of Range

DTC

C12BB1E

Right Front Wheel ABS Hold Solenoid Control Circuit Resistance Out of Range

DTC

C12BB49

Right Front Wheel ABS Hold Solenoid Control Internal Electronic Failure

DTC

C12C612

Right Front Wheel ABS Release Solenoid Control Circuit Short to Battery

DTC

C12C614

Right Front Wheel ABS Release Solenoid Control Circuit Short to Ground or Open

DTC

C12C61C

Right Front Wheel ABS Release Solenoid Control Circuit Voltage Out of Range

DTC

C12C61E

Right Front Wheel ABS Release Solenoid Control Circuit Resistance Out of Range

DTC

C12C649

Right Front Wheel ABS Release Solenoid Control Internal Electronic Failure

DESCRIPTION

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

The front solenoid valve RH controls the brake fluid pressure of the front wheel cylinder RH of the vehicle.

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C12BB12

Right Front Wheel ABS Hold Solenoid Control Circuit Short to Battery

A short to +B in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

C12BB14

Right Front Wheel ABS Hold Solenoid Control Circuit Short to Ground or Open

An open or short in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

C12BB1C

Right Front Wheel ABS Hold Solenoid Control Circuit Voltage Out of Range
  • A current leak in the solenoid circuit is detected during the self test.
  • The solenoid operation request signal and solenoid operation feedback signal do not match for a certain period of time.

Skid control ECU (brake actuator assembly)

C12BB1E

Right Front Wheel ABS Hold Solenoid Control Circuit Resistance Out of Range

An abnormal resistance in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

C12BB49

Right Front Wheel ABS Hold Solenoid Control Internal Electronic Failure

An internal malfunction in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

C12C612

Right Front Wheel ABS Release Solenoid Control Circuit Short to Battery

A short to +B in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

C12C614

Right Front Wheel ABS Release Solenoid Control Circuit Short to Ground or Open

An open or short in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

C12C61C

Right Front Wheel ABS Release Solenoid Control Circuit Voltage Out of Range
  • A current leak in the solenoid circuit is detected during the self test.
  • The solenoid operation request signal and solenoid operation feedback signal do not match for a certain period of time.

Skid control ECU (brake actuator assembly)

C12C61E

Right Front Wheel ABS Release Solenoid Control Circuit Resistance Out of Range

An abnormal resistance in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

C12C649

Right Front Wheel ABS Release Solenoid Control Internal Electronic Failure

An internal malfunction in the solenoid circuit is detected during the self test.

Skid control ECU (brake actuator assembly)

DTC Detection Conditions: C12BB14

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

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

○

-

A short in the 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: C12BB1C

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

A current leak in the solenoid circuit is detected during the self test.

○

-

The solenoid operation request signal and solenoid 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: C12C614

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

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

○

-

A short in the 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: C12C61C

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

A current leak in the solenoid circuit is detected during the self test.

○

-

The solenoid operation request signal and solenoid 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 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): UTILITY

PROCEDURE

1.

REPLACE BRAKE ACTUATOR ASSEMBLY

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

Click here 2019 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 01/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 03/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [03/2019 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

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