PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (w/o Vacuum Brake Booster): Electric Parking Brake does not Operate; 2022 - 2024 MY RAV4 RAV4 HV [12/2021

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM10000000218R1
Model Year Start: 2022	Model: RAV4	Prod Date Range: [12/2021 - ]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (w/o Vacuum Brake Booster): Electric Parking Brake does not Operate; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ]

Electric Parking Brake does not Operate

WIRING DIAGRAM

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.
To ensure that the electric parking brake does not operate, wait for 3 minutes or more with the ignition switch off, the driver door closed, and the brake pedal not depressed, then disconnect each connector, fuse and relay.
After replacing the No. 2 skid control ECU (brake actuator assembly), perform "Calibration".
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When replacing the No. 2 skid control ECU (brake actuator assembly), operate the electric parking brake switch (integration control and panel assembly) as the parking brake indicator light blinks when the ignition switch is first turned ON.

HINT:

Even if the electric parking brake is operating normally, the parking brake indicator light on the combination meter may be malfunctioning.

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication system DTCs are output.

Result	Proceed to
DTCs are not output	A
DTCs are output	B

2.	VEHICLE OPERATION CHECK

(a) With the wheels not contacting the ground, check the condition of the rear wheels when the electric parking brake is operating and not operating.

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Result	Proceed to
Lock and release operation is normal and parking brake indicator light turns off or blinks	A
Lock and release operation is malfunctioning and parking brake indicator light illuminates or turns off according to switch operation	B
Lock and release operation is malfunctioning and parking brake indicator light turns off or blinks	C

INSPECT REAR BRAKE

3.	INSPECT COMBINATION METER ASSEMBLY

(a) Perform the Active Test of the combination meter assembly using the GTS.

Tester Display
Indicat. Park

(b) Check the combination meter assembly.

OK:

Parking brake indicator light turns on or off in accordance with GTS operation.

REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

4.	CHECK HARNESS AND CONNECTOR (+BS TERMINAL VOLTAGE)

(a) Disconnect the A105 No. 2 skid control ECU (brake actuator assembly) connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
A105-14 (+BS) - Body ground	Always	11 to 14 V

*a	Front view of wire harness connector (to No. 2 Skid Control ECU (Brake Actuator Assembly))

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK HARNESS AND CONNECTOR (IG1 TERMINAL VOLTAGE)

(a) Disconnect the A105 No. 2 skid control ECU (brake actuator assembly) connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
A105-45 (IG1) - Body ground	Ignition switch ON	11 to 14 V

*a	Front view of wire harness connector (to No. 2 Skid Control ECU (Brake Actuator Assembly))

REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR