Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000026CPC
Model Year Start: 2023 Model: Corolla Prod Date Range: [09/2022 -           ]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): C060E2A; Left Electric Parking Brake Actuator Signal Stuck In Range; 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]

DTC

C060E2A

Left Electric Parking Brake Actuator Signal Stuck In Range

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C060E2A

Left Electric Parking Brake Actuator Signal Stuck In Range

  • Diagnosis Condition:

    Electric parking brake operating

  • Malfunction Status:

    Motor locked, gear locked, free spinning

  • Detection Time:

    -

  • Parking brake actuator assembly LH
  • No. 2 parking brake wire assembly
  • Wire harness or connector
  • Rear brake LH

DTC stored

An electric parking brake system malfunction is displayed on the multi-information display.

DTC Detection Conditions

 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Diagnosis Condition

Electric parking brake operating

Malfunction Status

Motor lock detected

-

-

Gear lock detected

-

-

Free spinning detected

-

-

Detection Time

-

-

-

Number of Trips

1 trip

1 trip

1 trip

WIRING DIAGRAM

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

CAUTION / NOTICE / HINT

NOTICE:

  • Although DTC C060E2A may be stored after entering pad replacement mode, this is not a malfunction.
  • Although DTC C060E2A may be stored after forcibly releasing the parking brake, this is not a malfunction.

PROCEDURE

1.

CHECK DTC

(a) Using the GTS, check for DTCs other than DTC C060E2A.

Chassis > Brake > Trouble Codes

Result

Proceed to

Only DTC C060E2A is output

A

DTCs other than C060E2A are output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

2.

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.

(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 (LE+)

Always

Below 1 Ω

nO3-1 or n1-2 (LE+) - Body ground and other terminals

Always

10 kΩ or higher

nO3-2 - n1-1 (LE-)

Always

Below 1 Ω

nO3-2 or n1-1 (LE-) - Body ground and other terminals

Always

10 kΩ or higher

NG

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

OK

3.

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.

(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 (LE+)

Always

Below 1 Ω

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

Always

Below 1 Ω

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

INSPECT REAR BRAKE AND PARKING BRAKE ACTUATOR ASSEMBLY LH (CHECK FOR ROTATING PARTS THAT ARE STUCK AND FOR FREE SPINNING ACTUATORS)

(a) Enter rear brake pad replacement mode.

Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): TEST MODE PROCEDURE

(b) Turn the power switch off.

(c) Check that the rotating parts are not seized or the actuator is not spinning freely.

(1) Check that the parking brake actuator assembly LH is installed properly to the rear brake caliper and that it is not spinning freely.

For the parking brake actuator assembly LH removal procedure

Click here 2020 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: REMOVAL

(2) Check that there is no damage to the rotating parts from the parking brake actuator assembly LH to the rear brake caliper.

(3) Inspect the parking brake actuator assembly LH and check that it operates correctly.

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

(4) Check that the rear brake caliper threaded part rotates and that the rear disc brake piston moves outward.

HINT:

For the check procedures, refer to the parking brake forced release method when not using the GTS.

Click here 2021 - 2025 MY Corolla Corolla HV [04/2020 -        ]; PARKING BRAKE: FORCED RELEASE (for HV Model): OPERATION METHOD

HINT:

Return to normal mode after work is complete.

Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): TEST MODE PROCEDURE

Result

Proceed to

Parking brake actuator assembly LH is malfunctioning

A

Other than parking brake actuator assembly LH is malfunctioning

B

A

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH

B

REPAIR OR REPLACE ABNORMAL PARTS