BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System TMC Made): C12E712,...,C12F249; Right Rear Wheel ABS Hold Solenoid Control Circuit Short to Battery; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM10000000271I5
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 TMC Made): C12E712,...,C12F249; Right Rear Wheel ABS Hold Solenoid Control Circuit Short to Battery; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]

DTC

C12E712

Right Rear Wheel ABS Hold Solenoid Control Circuit Short to Battery

DTC

C12E714

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

DTC

C12E71C

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

DTC

C12E71E

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

DTC

C12E749

Right Rear Wheel ABS Hold Solenoid Control Internal Electronic Failure

DTC

C12F212

Right Rear Wheel ABS Release Solenoid Control Circuit Short to Battery

DTC

C12F214

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

DTC

C12F21C

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

DTC

C12F21E

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

DTC

C12F249

Right Rear Wheel ABS Release Solenoid Control Internal Electronic Failure

DESCRIPTION

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

The rear solenoid valve RH controls the brake fluid pressure of the rear 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
C12E712	Right Rear 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)
C12E714	Right Rear 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)
C12E71C	Right Rear 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)
C12E71E	Right Rear 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)
C12E749	Right Rear 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)
C12F212	Right Rear 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)
C12F214	Right Rear 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)
C12F21C	Right Rear 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)
C12F21E	Right Rear 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)
C12F249	Right Rear 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)

PROCEDURE

1.	REPLACE BRAKE ACTUATOR ASSEMBLY

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

Click here

END