Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001G8ZR
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): C13A0,C13A5,C13B0; Open circuit in Power source circuit; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

DTC

C13A0

Open circuit in Power source circuit

DTC

C13A5

Electric Current of Motor

DTC

C13B0

Electric Parking Brake ECU Malfunction

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C13A0

Open circuit in Power source circuit

Both of following conditions are met:

  1. Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off.
  2. Parking brake ECU (brake actuator assembly) power source relay circuit is open for approximately 0.5 seconds.
  • Parking brake actuator assembly
  • Parking brake ECU (brake actuator assembly)

DTC stored

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

C13A5

Electric Current of Motor

Detection conditions (1)

  • Diagnosis Condition:

    Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off.

  • Malfunction Status:

    Parking brake ECU (brake actuator assembly) internal current is abnormal.

  • Detection Time:

    Approximately 0.1 to 0.5 seconds (depending on each malfunction)

Detection conditions (2)

  • Diagnosis Condition:

    Within 3 seconds of power switch being turned on (IG)

  • Malfunction Status:

    Zero point calibration of current monitor does not complete.

  • Detection Time:

    Approximately 3 seconds
  • Parking brake actuator assembly
  • Parking brake ECU (brake actuator assembly)

DTC stored

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

C13B0

Electric Parking Brake ECU Malfunction

Both of following conditions are met:

  1. Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off.
  2. Internal current of Parking brake ECU (brake actuator assembly) or ECU components abnormal for a maximum of 60 seconds (differs according to malfunction).
  • Parking brake actuator assembly
  • Parking brake ECU (brake actuator assembly)

DTC stored

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

DTC Detection Conditions: C13A0

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

Power switch on (IG)

○

-

Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off

-

○

Malfunction Status

Parking brake ECU (brake actuator assembly)'s power source relay is open

○

○

Detection Time

Approximately 0.5 seconds

Approximately 0.5 seconds

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: C13A5

 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Pattern 5

Diagnosis Condition

Power switch on (IG)

○

-

○

-

-

Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off

-

○

-

○

-

Within 3 seconds of power switch being turned on (IG)

-

-

-

-

○

Malfunction Status

Parking brake ECU (brake actuator assembly)'s internal current is abnormal (When parking brake is operating)

○

○

-

-

-

Parking brake ECU (brake actuator assembly)'s internal current is abnormal (When parking brake is not operating)

-

-

○

○

-

Zero point calibration of current monitor does not complete

-

-

-

-

○

Detection Time

Approximately 0.3 seconds

Approximately 0.3 seconds

Approximately 0.5 seconds

Approximately 0.5 seconds

Approximately 3 seconds

Number of Trips

1 trip

1 trip

1 trip

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: C13B0

 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Diagnosis Condition

Power switch on (IG)

○

-

○

-

Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off

-

○

-

○

Malfunction Status

Parking brake ECU (brake actuator assembly)'s internal voltage is abnormal

○

○

-

-

EEPROM is malfunctioning

-

-

○

○

Detection Time

Approximately 0.5 seconds

Approximately 0.5 seconds

Approximately 0.5 seconds

Approximately 0.5 seconds

Number of Trips

1 trip

1 trip

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 parking brake ECU (brake actuator assembly), the parking brake indicator light (red) blinks when the power switch is turned on (IG) for the first time. To turn off the parking brake indicator light (red) after replacing the parking brake ECU (brake actuator assembly), operate the electric parking brake switch to the lock side then to the release side.

PROCEDURE

1.

INSPECT PARKING BRAKE ACTUATOR ASSEMBLY

(a) Remove the parking brake actuator assembly.

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

(b) Inspect the parking brake actuator assembly.

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

NG

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY

OK

2.

REPLACE PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY)

(a) Replace the parking brake ECU (brake actuator assembly).

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for HV Model): REMOVAL

NEXT

END