Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000260QX
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): UTILITY; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]

UTILITY

DESCRIPTION

(a) If any of the parts listed in the following table are replaced or adjusted, it is necessary to perform the specified operation.

Parts to be Replaced / Operation

Necessary Operation
*: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.

Skid control ECU (brake actuator assembly)

Perform "Calibration".

Yaw rate and acceleration sensor (airbag sensor assembly)*
  1. Perform "Reset Memory".
  2. Perform "Calibration".

Wheel alignment adjustment
  1. Perform "Reset Memory".
  2. Perform "Calibration".

UTILITY ITEMS

Utility Items

Main Purpose

Link

All Readiness

Confirm if DTC judgment has been completed.

Refer to utility

Calibration

Enter Dealer Mode (Calibration) and perform yaw rate and acceleration sensor zero point calibration and system information memorization.

Refer to utility

Inspection Mode

Enter Inspection Mode which prohibits operation of VSC and TRAC.

Refer to utility

Signal Check

Enter Dealer Mode (Signal Check) and perform a signal inspection of the electronically controlled brake system.

2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): TEST MODE PROCEDURE

Vehicle Control History (RoB)

View vehicle control history (RoB).

2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): VEHICLE CONTROL HISTORY (RoB) 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): VEHICLE CONTROL HISTORY (RoB)

Reset Memory

Clear the following values:

  • steering sensor zero point
  • yaw rate and acceleration sensor zero point
  • system information

Refer to utility

ALL READINESS

HINT:

  • With "All Readiness", you can check whether or not the DTC judgment has been completed by using the GTS.
  • You should check "All Readiness" after simulating malfunction symptoms or for validation after finishing repairs.

(a) Turn the ignition switch off.

(b) Connect the GTS to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the GTS on.

(e) Operate the GTS to clear the codes. Enter the following menus: Chassis / Brake / Trouble Codes.

Chassis > Brake/EPB > Clear DTCs

(f) Press the clear button.

(g) Turn the ignition switch off.

(h) Start the engine.

(i) Perform the DTC judgment driving pattern to run the DTC judgment.

(j) Enter the following menus: Chassis / Brake / Utility / All Readiness.

Chassis > Brake/EPB > Utility

Tester Display

All Readiness

(k) Input the DTC to be confirmed.

(l) Check the DTC judgment result.

GTS Display

Description

Normal
  • DTC judgment completed
  • System normal

Abnormal
  • DTC judgment completed
  • System abnormal

Incomplete
  • DTC judgment not completed
  • Perform the driving pattern

N/A
  • Unable to perform DTC judgment
  • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
  • Perform the driving pattern

If the judgment result shows Incomplete or N/A, perform the DTC confirmation driving pattern again.

CALIBRATION

NOTICE:

  • After replacing the skid control ECU (brake actuator assembly), perform "Calibration".
  • After replacing or reinstalling the yaw rate and acceleration sensor (airbag sensor assembly), perform "Calibration" after performing "Reset Memory".
  • As the yaw rate and acceleration sensor zero point cannot be stored again until the current zero point is cleared, perform "Reset Memory" and yaw rate and acceleration sensor zero point calibration and system information memorization after replacing or removing and installing the yaw rate and acceleration sensor (airbag sensor assembly).
  • While obtaining the zero point, keep the vehicle stationary and do not vibrate, tilt, move, or shake it.
  • Be sure to perform this procedure on a level surface (with an inclination of less than 0.45 degrees).
  • While obtaining the zero point, make sure the tire pressure is as specified and the vehicle is in full contact with the ground (not lifted up or loaded).

(a) Clear the zero point calibration data and system information.

(1) Turn the ignition switch off.

(2) Apply the parking brake.

(3) Check that the shift lever is in neutral.

(4) Connect the GTS to the DLC3.

(5) Turn the ignition switch to ON.

(6) Turn the GTS on.

(7) Select the skid control ECU (brake actuator assembly) to clear the zero point calibration data using the GTS. Enter the following menus: Chassis / Brake / Utility / Reset Memory.

Chassis > Brake/EPB > Utility

Tester Display

Reset Memory

(8) Using the GTS, perform "Reset Memory".

NOTICE:

After performing "Reset Memory", the ABS warning light, brake system warning light (red indicator) and slip indicator light illuminate. If the vehicle is driven with the memory cleared, DTC will be stored.

(b) Perform "Calibration".

HINT:

  • Yaw rate and acceleration sensor zero point calibration and system information memorization are automatically performed immediately after Dealer Mode (Calibration) is entered.
  • If system information memorization has not yet been performed, the slip indicator light will remain on and DTC will be stored.
  • If yaw rate and acceleration sensor zero point calibration is not successful, the slip indicator light will remain on and DTC will be stored.

(1) Turn the ignition switch off.

(2) Apply the parking brake.

(3) Check that the shift lever is in neutral.

(4) Connect the GTS to the DLC3.

(5) Turn the ignition switch to ON.

(6) Check that the steering wheel is centered.

(7) Turn the GTS on.

(8) Switch the skid control ECU (brake actuator assembly) to calibration using the GTS. Enter the following menus: Chassis / Brake / Utility / Calibration.

Chassis > Brake/EPB > Utility

Tester Display

Calibration

(9) Using the GTS, perform "Calibration" and enter Dealer Mode (Calibration).

(10) Confirm that the ABS warning light and slip indicator light indicate the Dealer Mode pattern (blinking at 0.25 second intervals).

HINT:

  • After "Calibration" has successfully completed, the ABS warning light and slip indicator light indicate the Dealer Mode pattern (blinking at 0.25 second intervals).
  • The slip indicator light may illuminate for approximately 7 seconds before learning successfully completes.

(11) Turn the ignition switch off.

(12) Disconnect the GTS.

INSPECTION MODE (WHEN USING GTS)

(a) Activating Inspection Mode

NOTICE:

  • Inspection Mode will be canceled when the ignition switch is turned off. Make sure to enter Inspection Mode again if the inspection is continued after the ignition switch is turned off.
  • Never drive the vehicle while in Inspection Mode.

(1) Ensure that the ignition switch is off and the engine is stopped.

(2) Connect the GTS to the DLC3.

(3) Turn the ignition switch to ON.

(4) Turn the GTS on.

(5) Enter the following menus: Chassis / Brake / Utility / Inspection Mode.

Chassis > Brake/EPB > Utility

Tester Display

Inspection Mode

(6) Check that the VSC OFF indicator light comes on and the TRAC OFF indicator light comes on (Confirm that the system has entered Inspection Mode).

(b) End of Inspection Mode.

(1) Turning the ignition switch off ends Inspection Mode.

NOTICE:

If the ignition switch is turned to ON within 60 seconds of being turned off, the system will reenter Inspection Mode.

(2) Confirm that the VSC OFF indicator light turns off and the TRAC OFF indicator light turns off (Confirm that Inspection Mode is canceled).

INSPECTION MODE (WHEN NOT USING GTS)

(a) Activating Inspection Mode

NOTICE:

  • Inspection Mode will be canceled when the ignition switch is turned off. Make sure to enter Inspection Mode again if the inspection is continued after the ignition switch is turned off.
  • Never drive the vehicle while in Inspection Mode.

HINT:

Perform steps "C" to "G" within 30 seconds.

(1) Turn the ignition switch to ON (Step "A").

(2) Release the parking brake (Step "B").

(3) With the brake pedal depressed, start the engine (Step "C").

(4) While holding the brake pedal down, apply the parking brake (Step "D").

(5) With the parking brake applied, depress and release the brake pedal twice (Step "E").

(6) While holding the brake pedal down, release and apply the parking brake twice (Step "F").

(7) With the parking brake applied, depress and release the brake pedal twice (Step "G").

(8) Check that the VSC OFF indicator light comes on and the TRAC OFF indicator light comes on (Confirm that the system has entered Inspection Mode).

(b) End of Inspection Mode.

(1) Turning the ignition switch off ends Inspection Mode.

NOTICE:

If the ignition switch is turned to ON within 60 seconds of being turned off, the system will reenter Inspection Mode.

(2) Confirm that the VSC OFF indicator light turns off and the TRAC OFF indicator light turns off (Confirm that Inspection Mode is canceled).