Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Electric Parking Brake System AUTO Function Circuit

Toyota Corolla Cross (2022-2025) Service Manual / Brake / Parking Brake / Electric Parking Brake System (for Gasoline Model) / Electric Parking Brake System AUTO Function Circuit

DESCRIPTION

The skid control ECU (brake actuator assembly) receives shift position signals from the TCM via CAN communication to control the electric parking brake system AUTO function (shift-linked function).

The electric parking brake system AUTO function (shift-linked function) is automatically disabled when the ignition switch is ON, the brake pedal is depressed and the shift lever is moved out of P. Then, if the shift lever is moved to P, the AUTO function (shift-linked function) automatically operates to apply the electric parking brake.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • The AUTO function (shift-linked function) will not be automatically disabled when the ignition switch is ON, the brake pedal is depressed and the shift lever is moved out from P if the electric parking brake switch assembly is moved to the engage side. The AUTO function (shift-linked function) will not automatically operate to apply the electric parking brake when the shift lever is moved to P if the electric parking brake switch assembly is moved to the release side.
  • The electric parking brake may still operate up to 20 seconds after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 20 seconds or more.
  • After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.

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  • When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light blinks (red) when the ignition switch is first turned ON.

PROCEDURE

1.

CHECK DTC (CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM)

(a) Check for DTCs.

Powertrain > Transmission > Trouble Codes

Result

Proceed to

DTC is not output

A

DTC is output (for 2WD)

B

DTC is output (for AWD)

C
A

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

B

GO TO CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM

C

GO TO CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM

    READ NEXT:

     Electric Parking Brake System (for Hev Model)

     Precaution

    PRECAUTION TROUBLESHOOTING PRECAUTIONS (a) When inspecting the rear brakes, disconnect the connector or disconnect the cable from the negative (-) auxiliary battery terminal in order to shut off

     Parts Location

    PARTS LOCATION ILLUSTRATION *1 BRAKE ACTUATOR ASSEMBLY - SKID CONTROL ECU *2 NO. 1 ENGINE ROOM RELAY BLOCK - ABS NO. 2 FUSE ILLUSTRATION

    SEE MORE:

     Precaution

    PRECAUTION HINT: The following procedures are used to prevent wrinkles from forming when installing the seat cover. Make sure to follow the procedures correctly. The shape of the seat shown in the illustration may differ from the actual seat. SEAT COVER SET (a) Align the center c

     Problem Symptoms Table

    PROBLEM SYMPTOMS TABLE If DTCs are not output but the malfunction persists, use the following table to determine which circuits to inspect for each problem symptom. HINT: Refer to each inspection procedure for related problem symptoms. Electronically Controlled Brake System Symptom

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