Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001G8ZK
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): TERMINALS OF ECU; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

TERMINALS OF ECU

CHECK PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY)

*a

Front view of wire harness connector (to Parking Brake ECU (Brake Actuator Assembly))

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(a) Disconnect the A113 parking brake ECU (brake actuator assembly) connector.

(b) Measure the voltage and resistance according to the value (s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A113-9 (BEPB) - Body ground

W - Body ground

Parking brake power supply

Power switch off

11 to 14 V

A113-26 (IG) - Body ground

SB - Body ground

IG power supply

Power switch on (IG)

8 to 16 V

A113-2 (EGND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A113-13 (POL) - Body ground

V - Body ground

Electric parking brake switch indicator light

-

-

A113-14 (SWI1) - Body ground

B - Body ground

Electric parking brake switch (electric parking brake switch assembly)

-

-

A113-24 (SWI2) - Body ground

W - Body ground

Electric parking brake switch (electric parking brake switch assembly)

-

-

A113-20 (SWO1) - Body ground

G - Body ground

Electric parking brake switch (electric parking brake switch assembly)

-

-

A113-22 (SWO2) - Body ground

L - Body ground

Electric parking brake switch (electric parking brake switch assembly)

-

-

A113-4 (MRR+) - Body ground

SB - Body ground

Parking brake motor RH (parking brake actuator assembly RH) (+)

-

-

A113-3 (MRR-) - Body ground

P - Body ground

Parking brake motor RH (parking brake actuator assembly RH) (-)

-

-

A113-7 (MRL+) - Body ground

R - Body ground

Parking brake motor LH (parking brake actuator assembly LH) (+)

-

-

A113-8 (MRL-) - Body ground

L - Body ground

Parking brake motor LH (parking brake actuator assembly LH) (-)

-

-

A113-27 (SPD) - Body ground

V - Body ground

Vehicle speed direct input

-

-

A113-12 (CANH) - Body ground

B - Body ground

CAN communication line H

-

-

A113-11 (CANL) - Body ground

W - Body ground

CAN communication line L

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