Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000277RV
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for Gasoline Model): C060B13; Left Electric Parking Brake Actuator Control Circuit Open; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]

DTC

C060B13

Left Electric Parking Brake Actuator Control Circuit Open

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C060B13

Left Electric Parking Brake Actuator Control Circuit Open
  • 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 (open).

  • 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.

WIRING DIAGRAM

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PROCEDURE

1.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the engine 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.

(c) Disconnect the nO3 and n1 No. 2 parking brake wire assembly connectors.

(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 - n1-2 (+)

Always

Below 1 Ω

nO3-1 - Other terminals

Always

10 kΩ or higher

nO3-2 - n1-1 (-)

Always

Below 1 Ω

nO3-2 - Other terminals

Always

10 kΩ or higher
NG

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY
OK

2.

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

(a) Turn the engine switch off.

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

(c) Disconnect the A51 skid control ECU (brake actuator assembly) connector.

(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+) - n1-2 (+)

Always

Below 1 Ω

A51-12 (MRL-) - n1-1 (-)

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT PARKING BRAKE ACTUATOR ASSEMBLY LH

(a) Remove the parking brake actuator assembly LH.

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(b) Inspect the parking brake actuator assembly LH.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: INSPECTION

OK

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

NG

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH