Toyota Tundra. Manual — part 958

OK: REPLACE VSC ACTUATOR ASSEMBLY (See REMOVAL )

BRAKE ACTUATOR

COMPONENTS

Fig. 128: Identifying Brake Actuator Replacement Components With Torque Specifications
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

ON-VEHICLE INSPECTION

1. CONNECT TECHSTREAM

a. Connect the Techstream to the DLC3.

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

b. Start the engine and run it at idle.

c. Select the Active Test mode on the Techstream.

HINT:

Refer to the Techstream operator's manual for further details.

2. INSPECT ACTUATOR MOTOR OPERATION

a. With the motor relay ON, check the actuator motor operation noise.

b. Turn the motor relay OFF.

c. Depress the brake pedal and hold it for about 15 seconds. Check that the pedal does not go down

any further while holding it.

d. With the motor relay ON, check that the pedal could have pulsations.

e. Turn the motor relay OFF and release the brake pedal.

3. INSPECT RIGHT FRONT WHEEL OPERATION

a. With the brake pedal depressed, perform the following operations.

b. Turn the ABS Solenoid (SFRH) and ABS Solenoid (SFRR) ON simultaneously, and check that the

pedal cannot be depressed.

c. Turn the ABS Solenoid (SFRH) and ABS Solenoid (SFRR) OFF simultaneously, and check that

the pedal can be depressed.

d. Turn the motor relay ON and check that the pedal returns.

e. Turn the motor relay OFF and release the brake pedal.

4. INSPECT OTHER WHEEL OPERATION

a. Using the procedure above, check the solenoids of the other wheels.

NOTE:

Do not keep the motor relay ON for more than 5 seconds
continuously. When operating it consecutively, wait more than 20
seconds between each operation.

NOTE:

Never turn ON a solenoid that is not described below.

NOTE:

Do not keep the solenoid ON for more than 10 seconds continuously.
When operating it consecutively, wait more than 20 seconds between
each operation.

NOTE:

Do not keep the motor relay ON for more than 5 seconds
continuously. When operating it consecutively, wait more than 20
seconds between each operation.

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

HINT:

LEFT Front wheel LH: ABS Solenoid (SFLH), ABS Solenoid (SFLR)

RIGHT Rear wheel RH: ABS Solenoid (SRRH), ABS Solenoid (SRRR)

LEFT Rear wheel LH: ABS Solenoid (SRLH), ABS Solenoid (SRLR)

5. CLEAR DTC

a. Clear the DTCs (see DTC CHECK/CLEAR ).

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

2. DISCONNECT VSC ACTUATOR CONNECTOR

a. Pull the release bar and disconnect the VSC actuator connector.

Fig. 129: Identifying VSC Actuator Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3. REMOVE BRAKE TUBE

a. Use tags or make a note to identify the reconnection locations.

NOTE:



After the ignition switch is turned OFF, the navigation system
requires approximately 90 seconds to record various types of
memory and settings. As a result, after turning the ignition switch
OFF, wait 90 seconds or more before disconnecting the cable from
the negative (-) battery terminal.



Some systems need to be initialized after the cable is reconnected
(see INITIALIZATION ).

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

Fig. 130: Identifying Brake Tubes
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Using a union nut wrench, disconnect the 2 brake tubes from the VSC actuator.

Fig. 131: Using Union Nut Wrench To Disconnect Brake Tubes From VSC Actuator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c. Using a union nut wrench, remove the 2 brake tubes from the brake master cylinder.

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra