PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): C060B00,C060B11; Left Electric Parking Brake Actuator Control; 2023 - 2025 MY Corolla Corolla HV [09/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM1000000026CP9
Model Year Start: 2023	Model: Corolla	Prod Date Range: [09/2022 - ]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): C060B00,C060B11; Left Electric Parking Brake Actuator Control; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ]

DTC

C060B00

Left Electric Parking Brake Actuator Control

DTC

C060B11

Left Electric Parking Brake Actuator Control Circuit Short to Ground

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
C060B00	Left Electric Parking Brake Actuator Control	Diagnosis Condition: - Malfunction Status: When the ECU power supply is normal, a malfunction in the electric parking brake actuator LH internal circuit is detected. Detection Time: -	Parking brake actuator assembly LH No. 2 parking brake wire assembly Wire harness or connector Skid control ECU (brake actuator assembly)	DTC stored	An electric parking brake system malfunction is displayed on the multi-information display.
C060B11	Left Electric Parking Brake Actuator Control Circuit Short to Ground	Diagnosis Condition: Electric parking brake not operating Malfunction Status: The ECU power supply is normal but there is a malfunction in the electric parking brake actuator LH internal circuit (short to GND). Detection Time: Approximately 0.015 to 0.195 seconds (depending on each malfunction)	Parking brake actuator assembly LH No. 2 parking brake wire assembly Wire harness or connector Skid control ECU (brake actuator assembly)	DTC stored	An electric parking brake system malfunction is displayed on the multi-information display.

1.	INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the power switch off.

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

*a	Front view of No. 2 Parking Brake Wire Assembly	*b	(to wire harness connector)
*c	(to Parking Brake Actuator Assembly LH)	-	-

Standard Resistance:

Tester Connection	Condition	Specified Condition
nO3-1 or n1-2 (LE+) - Body ground and other terminals	Always	10 kΩ or higher
nO3-2 or n1-1 (LE-) - Body ground and other terminals	Always	10 kΩ or higher

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

2.	CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - PARKING BRAKE ACTUATOR ASSEMBLY LH)

(a) Turn the power switch off.

(b) Make sure the No. 2 parking brake wire assembly is securely installed.

(d) Disconnect the n1 parking brake actuator assembly LH connector.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A51-13 (MRL+) or n1-2 (LE+) - Body ground	Always	10 kΩ or higher
A51-12 (MRL-) or n1-1 (LE-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	INSPECT PARKING BRAKE ACTUATOR ASSEMBLY LH

(a) Remove the parking brake actuator assembly LH.

Click here

(b) Inspect the parking brake actuator assembly LH.

Click here

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)